Some standard content:
ICS83.140
National Standard of the People's Republic of China
GB/T4085-2005
Replaces GB/T40351983
Semirigid pulyvinyl chloride tile flooring
Semirigid pulyvinyl chloride flner tiles2005-01-19 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of the People's Republic of China
2005-08-01 Implementation
GB/T4085—2005
This standard is not equivalent to the technical requirements of the standard 9:159 for homogeneous and composite polyvinyl chloride flooring, with the following main differences:
—. This standard is applicable to tile flooring, N324:1996 for tile and roll flooring! This standard - FN49, 1S96 for the product of the six standards to promote the use of the month's resistance to the use of the standard is not the company: a standard to replace the GB / 4095-1384 hard floor block 7. 3. The main changes are as follows, the original standard reference SA570519814 polyvinyl chloride upper plate. - Table eliminated the items of heat deformation coefficient, heating quality loss rate and 2. 1. Added unit volume, blood, heating material bending, color fastness, the most harmful substances, the most items, this standard is the China New York Building Materials Association regulations. This standard is promoted by the National Quality and Decoration Engineering Committee of Building Materials Standardization (CSBTS/TC1). The responsible drafting units of this standard are Shanghai Chunzhu Science Research Institute, Haolong Plastic Products Co., Ltd., Zhangjiagang Caili Plastic Products Co., Ltd. The participating units of this standard are Shanghai Changzuo (Plastic Products Co., Ltd.), Gaoli Decorative Chemicals (Shangbo) Co., Ltd., Shangwan Yangguangying Decorative Materials Co., Ltd., Xiaoting Maweisda Building Materials Co., Ltd., Tianjin LC, Caiji Painting Materials Co., Ltd., Dejia Huzhou Co., Ltd., Foshan Shunde Chencun Platinum: Fei Decoration Materials Co., Ltd. The drafters of this standard are Die Jie, Zhao Hang, Xue Dengming, Xiu Qing, Xia Ranming, Ying Tairen. Standard 383 was issued on December 100th, the first time for market change 1 Scope
Semi-rigid fluoroethylene block flooring
GB/T 4085—2005
This standard defines the terms and definitions of medium-hard polyvinyl fluoride flooring. The following are briefly summarized, including the flammability specifications, requirements, test methods, inspection plans, marking, packaging and transportation. This standard is based on the main raw materials of polyvinyl chloride resin and defines the flooring used in the construction of floor coverings. 2 Normative references
The clauses in the following documents shall become the clauses of this standard before they are used in this standard. All the documents with the date of application and all the amendments or revisions thereto are not applicable to this standard. However, the parties to the relevant standard have no right to use these documents, which may be new versions. All the referenced documents with the date of application are not applicable to this standard. This standard G2 color sample (id:sO1oFA2Teiles—Test furluurfasePaA22:Girey scale for aacasing charge in coluur)CB?30 Textile color single variable test and light and air glow color fastness blue wool standard (eyv1S0:05H:1954)/105-198 plastic sale and scanning rate test method (05:11X31984) GBT84271S98 color fastness test of defective products to artificial light color medium: low arc (+V110:021901) T0.2-2 solid floor inspection and test method GB181-promoting laminated nature control board
G R8526 Indoor anti-toxic swimming pool installation 3. Terms and definitions
The following terms and definitions apply to this article. 3.2
Homogeneous flooring is a floor composed of multiple layers of different materials, including a layer of thick and clear pattern, and a short pattern of multiple layers. 3.3
Flooring containing betergencousfluur
Flooring composed of multiple layers of other materials. 2 Classification and marking
4.1 Classification and code
4.1.1 Classification by structure
Texture version code is Hl:
5 Composite version code is
4.1.2 Classification by construction work
) Row connection type, code M
b) Belt, code w.
4.1.3 Classification by wear resistance
) Certificate type code is:
) Type code.
GB/T4085—2005
4.2 Product marking
The order of product marking is: product name, structural classification, construction method, durability level, specification size, standard number. Example: 350u: 1. The type of flooring that can be used is: Polyethylene flooring H003ocx1.5)nGB/Tcs:20s
5.1 Appearance
The appearance should comply with the requirements of the table. Table 1 Appearance
Defects, cracks, sparseness, holes
Delamination
Impurities, airtightness, offset printing, changes, abnormal packaging, pollution, etc. shall be in accordance with the requirements of both parties.
5.2 Dimensional deviation
5. 2. 1 Length
Not included
The allowable difference between the mean value of the length and the average value is %; the allowable difference between the individual side length value and the average side length is =, 5 rr,
5.2. 2 Thickness
This shall be in accordance with
5. 2. 2. 1
Table 2 Thickness
5. 2. 2. 2
The allowable difference between the half mean value of the width and the average value is %; the allowable difference between the individual side length value and the serial length value is -0. 15 mm,
The provisions of the relevant regulations shall apply,
Table 3 Angle
40G (standard)
5.3 Physical properties
Physical properties shall be in accordance with the provisions of Table 1
Table 4 Physical properties
Density/kz: m)
Residual temperature:
Nominal density
Nominal value (unit: mm)
Abundance/level
Drive, small change M
Application may require double agreement
1 Is there a substance limit?
The actual substance limit shall be as specified in Table 5
Table 4 (continued)
Table 5 Hazardous substance limit
Test monitoring function
Elements such as A; (ng/ kg)
P rate/(mR/m1
Limit of selected substances ()
Test method
Test operation
Verification Before the test, the test must be carried out under humidity
.
6.2 Test piece preparation
: B/T 4085—2005
2: Scan the cup filter conditions with a load of 5-0. Under this condition, the size and quantity of the piece should conform to the specifications of the state 3. The size and quantity of the test piece shall be reflected in the surface quality of the single product. The heating air inch change rate and the heat welcome curve shall be 6.3 Appearance: whole leather products shall be tested at an illumination of 100-25℃ under micro-irradiation or light lamp (the illumination is 100℃). Record the existence of various defects in Table 1. 4085—2005
GH/1.
6.4 Dimensional deviation
6.4.1 Side length
In the longitudinal direction of the floor, draw a parallel straight line at 10mm away from the edge and at the center. Use a new standard caliper with an accuracy of 0.2rm to measure the length of each straight line. Take five test pieces for test and calculate the arithmetic average value and the test results of a single test piece as the average value. The maximum value is accurate to 1
6. 2.2 Thickness
6.4.2,1 The thickness of the receiver
is only 6.00am+0.c3mm. The total mass added by the press is 85±3, and the graduation value is .7-1mml. 6.4.2.2 Test procedure
According to the method of ", the original length is obtained at the intersection of the edge. If there is a flower effect, measure the thickness of the part: take the arithmetic mean of the test results of five pieces and the maximum deviation of the average value of the single piece test result, and correct it to 0.016.4.2.3 Angle
Place the test piece on a polished glass plate or stainless steel plate, and gently place the "edge" of the test piece on the edge of the protractor. The other side of the test piece can be measured with a ruler (Figure 1). At this time, all four sides of the test piece are measured. Therefore, the test piece will be tested and the result will be the number of the test result.
1-point ruler, ... F6.5.3 Test results
Calculate the difference between the individual values of the five test units and the nominal straightness. Express it as a white fraction. The test results are the arithmetic mean of the test results of the three test pieces. 6.6 Density
According to the provisions of the general method specification in (8/1104-5), the test results are the arithmetic mean of the three test pieces. 6.7 Residual dent
6.7. 1 Instrument
A dent test machine is installed on the machine, with a mesh needle pressure head of 11.3m%, its edge is a radius c, and a 15mm strip: it can be loaded with a load of 50013.5N
6.7.2 Test steps
GR/T 4085—2005
After the specimen is placed in the standard environment for 1 hour, use the thickness gauge specified in 6.1.2.1 to measure the initial thickness t of the specimen and mark the cutting point. Place the working level of the test machine on the wear-resistant layer of the specimen at the marked measuring point. Fill in the load within 0CN-0.N.2 and start timing. Keep it for 151m. After heating, pull all the loads for 153min and measure the accuracy t of the marked measuring point to 0.01 6.7.3 The residual concave of the test result
is calculated according to the formula (1>, and is expressed by the arithmetic half mean of the test results of two specimens: D=-1
Where:
Residual concave m:
Load specimen thickness, mm
After removing the maximum negative mir: After the far specimen thickness, m. 6.8 Color rate consideration
According to GT/T8427-1998, the two specimens are 750 5 color sheep positive standard put into the test box together with the light or light, another test piece to enhance the light preservation. The temperature of the blackboard in the test box is 45 5, the brightness is 55%, the operation will be equivalent to GR73 (E grade blue wool cattle GB25C gray scale color change, the test is terminated. Use the color elasticity specified in GB25 to evaluate the color change grade of the test piece, and use the smaller and worse keys of the two test pieces to express the color ratio. 6.9 Heating size change 6.9.1 Instruments: a) Install the bellows with a precision of 2 m/s. b) Vernier caliper with a precision of 0.n2rm. 6.9.2 Test Procedure: Draw two parallel lines 25 mm from the sides of the specimen along the specimen as shown in Figure 2, and mark two points. Use a vernier caliper to measure the longitudinal and longitudinal distances between the two reference points, respectively, with an accuracy of U.U2m. Then place the specimen on a mat between the layers. Place the specimen on a flat plate or a flat plate with a nameplate (F): The specimen should be placed in a temperature-controlled air chamber together with the specimen. The vertical distance between the flat plate and the oven should not be less than 0m, and the multiplied distance between the flat plate and the oven should not be less than 0m. Keep the H film on the market, under the standard bar 21, measure the distance in the specific direction of the specimen with an accuracy of 0.02mm1. The measurement corresponds to H-replace a 180mmX180mx13mm flat copper plate on the t surface of the specimen. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.The floor produced in a 0% humidity environment must be kept at a real temperature for more than 24 hours before construction.The floor produced in a 0% humidity environment must be kept at a real temperature for more than 24 hours before construction.The floor produced in a 0% humidity environment must be kept at a real temperature for more than 24 hours before construction.The floor produced in a 0% humidity environment must be kept at a real temperature for more than 24 hours before construction.1 Only the instrument
uses a caliper with an accuracy of 0.5mm and a balance with a sensitivity of .g. 6. 5.2 Test steps
Measure the size of each test piece and extract it accurately to 1). 1-1Tm1. Then remove the mass of each test piece and extract it accurately to 0. 1 F6.5.3 Test results
Calculate the exact difference between the single value of the product of the five test units and the nominal diameter. Express it as a white fraction. The test results are as follows: take the arithmetic mean of the test results of 10 test pieces, and screen them to the longest length. 6.6 Precision
According to the provisions of the general method specification in (8/1104-5), the test result is the arithmetic average of the three test pieces. 6.7 Residual depression
6.7. 1 Apparatus
A sink test machine is installed on the machine, which is equipped with a mesh needle pressure head with a radius of c and a 15mm diameter. It can be added with a load of 50013.5N.
6.7.2 Test procedure
GR/T 4085—2005
After the specimen is placed in the standard environment for 1 hour, use the thickness gauge specified in 6.1.2.1 to measure the initial thickness t of the specimen and mark the cutting point. Place the working level of the specimen wear-resistant layer on the marked measuring point. Fill in the load within 0CN-0.N.2 and start timing. Keep it for 151m. After heating, pull all the loads for 153min. Measure the precision t of the marked measuring point. Accurate to 0.01mm. 6.7.3 Test results
Residual concave According to the formula (1> calculation, the arithmetic half mean of the test results of two specimens is expressed as: D=-1
Where:
The remaining concave m:
The thickness of the load specimen, mm
Divided by the maximum negative sound double mir:The thickness of the specimen, m.6.8Color rate consideration
According to GT/T8427-1998, two specimens are placed in the test box together with the 5-color sheep positive standard specified in I750 to receive or light exposure, and the other specimen is kept in the test box. The temperature of the inner blackboard is 45°C and the relative humidity is 55%. The test is terminated when the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool). The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller and worse values of the two test pieces. 6.9 Heating dimensional change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Swivel caliper, the precision is 0.n2rm.
6.9 .2 Test steps
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use the vernier caliper to measure the longitudinal and longitudinal distances between the two reference points, and the accuracy is U.U2m. Then place the test piece on a floor mat. Place it on a flat plate or unhooked flat plate with a powder coating (F): The test piece should be placed in a temperature controlled room. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, and the accuracy is 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.1 Only the instrument
uses a caliper with an accuracy of 0.5mm and a balance with a sensitivity of .g. 6. 5.2 Test steps
Measure the size of each test piece and extract it accurately to 1). 1-1Tm1. Then remove the mass of each test piece and extract it accurately to 0. 1 F6.5.3 Test results
Calculate the exact difference between the single value of the product of the five test units and the nominal diameter. Express it as a white fraction. The test results are as follows: take the arithmetic mean of the test results of 10 test pieces, and screen them to the longest length. 6.6 Precision
According to the provisions of the general method specification in (8/1104-5), the test result is the arithmetic average of the three test pieces. 6.7 Residual depression
6.7. 1 Apparatus
A sink test machine is installed on the machine, which is equipped with a mesh needle pressure head with a radius of c and a 15mm diameter. It can be added with a load of 50013.5N.
6.7.2 Test procedure
GR/T 4085—2005
After the specimen is placed in the standard environment for 1 hour, use the thickness gauge specified in 6.1.2.1 to measure the initial thickness t of the specimen and mark the cutting point. Place the working level of the specimen wear-resistant layer on the marked measuring point. Fill in the load within 0CN-0.N.2 and start timing. Keep it for 151m. After heating, pull all the loads for 153min. Measure the precision t of the marked measuring point. Accurate to 0.01mm. 6.7.3 Test results
Residual concave According to the formula (1> calculation, the arithmetic half mean of the test results of two specimens is expressed as: D=-1
Where:
The remaining concave m:
The thickness of the load specimen, mm
Divided by the maximum negative sound double mir:The thickness of the specimen, m.6.8Color rate consideration
According to GT/T8427-1998, two specimens are placed in the test box together with the 5-color sheep positive standard specified in I750 to receive or light exposure, and the other specimen is kept in the test box. The temperature of the inner blackboard is 45°C and the relative humidity is 55%. The test is terminated when the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool). The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller and worse values of the two test pieces. 6.9 Heating dimensional change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Swivel caliper, the precision is 0.n2rm.
6.9 .2 Test steps
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use the vernier caliper to measure the longitudinal and longitudinal distances between the two reference points, and the accuracy is U.U2m. Then place the test piece on a floor mat. Place it on a flat plate or unhooked flat plate with a powder coating (F): The test piece should be placed in a temperature controlled room. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, and the accuracy is 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has a total of 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.7.1 Apparatus
Sinkable testing machine, equipped with a 11.3m% mesh needle indenter, with an edge radius of c, and a 15mm strip: capable of being loaded with a load of 50013.5N
6.7.2 Test procedure
GR/T 4085—2005
After the specimen has been placed in the standard environment for 1 hour, use the thickness gauge specified in 6.1.2.1 to measure the initial thickness t of the specimen and mark the cutting point. Place the specimen wear-resistant layer on the working plane of the sink test machine at the marked measuring point. Fill in the load within 0CN-0.N.2 and start the timing. Keep it for 151m. After heating, pull all the loads for 153min. Measure the depth t of the marked measuring points with an accuracy of 0.01mm. 6.7.3 The residual sink of the test result
is calculated according to the formula (1>, and is expressed as the arithmetic half mean of the test results of two specimens: D=-1
Where:
Residual sink m:
Thickness of the load specimen, mm
Divided by the maximum negative double m ir: After the piece is thick, m.6.8 Color rate consideration
According to GT/T8427-1998, two test pieces are placed in the test box together with the 5-color sheep standard specified in I750, and the other test piece is kept in the test box. The temperature of the blackboard in the test box is 45°C and the relative humidity is 55%. When the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool product GB25C), the test is terminated. The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller difference of the two test pieces. 6.9 Heating size change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Swivel caliper, the precision is 0.n2rm.
6.9.2 Test Procedure
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use a vernier caliper to measure the distance between the two reference points in the longitudinal direction and the horizontal direction respectively, with an accuracy of U.U2m. Then place the test piece on a sheet of paper or on a flat plate or an unhooked flat plate (F): The test piece should be placed in a temperature controlled room with a temperature of 1000 °C. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, with an accuracy of 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.7.1 Apparatus
Sinkable testing machine, equipped with a 11.3m% mesh needle indenter, with an edge radius of c, and a 15mm strip: capable of being loaded with a load of 50013.5N
6.7.2 Test procedure
GR/T 4085—2005
After the specimen has been placed in the standard environment for 1 hour, use the thickness gauge specified in 6.1.2.1 to measure the initial thickness t of the specimen and mark the cutting point. Place the specimen wear-resistant layer on the working plane of the sink test machine at the marked measuring point. Fill in the load within 0CN-0.N.2 and start the timing. Keep it for 151m. After heating, pull all the loads for 153min. Measure the depth t of the marked measuring points with an accuracy of 0.01mm. 6.7.3 The residual sink of the test result
is calculated according to the formula (1>, and is expressed as the arithmetic half mean of the test results of two specimens: D=-1
Where:
Residual sink m:
Thickness of the load specimen, mm
Divided by the maximum negative double m ir: After the piece is thick, m.6.8 Color rate consideration
According to GT/T8427-1998, two test pieces are placed in the test box together with the 5-color sheep standard specified in I750, and the other test piece is kept in the test box. The temperature of the blackboard in the test box is 45°C and the relative humidity is 55%. When the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool product GB25C), the test is terminated. The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller difference of the two test pieces. 6.9 Heating size change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Swivel caliper, the precision is 0.n2rm.
6.9.2 Test Procedure
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use a vernier caliper to measure the distance between the two reference points in the longitudinal direction and the horizontal direction respectively, with an accuracy of U.U2m. Then place the test piece on a sheet of paper or on a flat plate or an unhooked flat plate (F): The test piece should be placed in a temperature controlled room with a temperature of 1000 °C. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, with an accuracy of 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.8 Color rate test
According to GT/T8427-1998, two test pieces are placed in the test box together with the 5-color sheep standard specified in I750, and the other test piece is kept in the test box. The temperature of the blackboard in the test box is 45°C and the relative humidity is 55%. When the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool product GB25C), the test is terminated. The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller difference of the two test pieces. 6.9 Heating dimensional change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Caliper, the precision is 0.n2rm.
6.9.2 Test Procedure
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use a vernier caliper to measure the distance between the two reference points in the longitudinal direction and the horizontal direction respectively, with an accuracy of U.U2m. Then place the test piece on a sheet of paper or on a flat plate or an unhooked flat plate (F): The test piece should be placed in a temperature controlled room with a temperature of 1000 °C. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, with an accuracy of 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out:
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is added to the plate. The remaining four properties are inspected once: four batches of your period, the formula, the state 1 technology, four consecutive specifications, 7.1.2 Type inspection
Type inspection items are 5 All inspection dates listed in the production: The following conditions should be strictly carried out type inspection
a! New production or test only for conversion to the finalization of the product: h) Only half of the production is carried out once every year;
c) If the product design, production equipment, management and other factors have major changes, it may affect the product quality: 2, the product has been discontinued for more than one year, the production is issued for, c) the factory inspection results are too different from the secondary type control inspection: the national quality and temporary institutions have put forward the requirements for type release 7.2 Batch and sampling
7.2.1 Batch
GB/T 4085-20C5
Test as single yield, with the same combination, the same two, the same specifications of the first batch, the batch quantity is 5, 5000㎡ is also a batch, the cattle output less than 590㎡ is counted as a batch of 5.7.2.2 Take
year-at least 1 piece of land recovery cattle as a test piece, and take at most two pieces from each product (the first piece and the last piece are excluded: 7.3 Judgment rules
7.3.1 Appearance and size
Appearance and size should be evaluated when evaluating If 5 items meet the requirements of .1 and .2, and 5 items are unqualified in the process, new pieces will be selected from the limit 5 and retested on the same day. If they are still unqualified, the batch of products will be classified as unqualified. 7.3.2 Physical properties
In 7.3, a sufficient number of pieces will be randomly selected from the three qualified products for physical performance evaluation. If all the results meet the requirements of .3, and there is any unqualified item in the batch of products, the unqualified items will be retested on the same day with double the test pieces from the limit 5. The products that do not meet the requirements will be classified as unqualified.
7.3.3 Legal material limits
If there is any material limit or one of the items is not up to standard, the batch of products shall be judged as unqualified: Date: Marking, packaging, transportation and storage
8.1 Marking
There shall be obvious markings on the packaging box to indicate the following contents: 1) Product name, label, approval number!
b) Product marking:
) Production date or batch number:
Quantity, quantity, quota;
) Production name and certificate
8.2 Packaging
The floor shall be packed in a certain size and each batch of products shall have a product certificate. 8.3 The floor shall be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: It can be subjected to the following conditions: High torque joints are allowed, and it cannot be drenched. 8. 4 Storage: The floor skin should be kept in a dry environment below 40°C. The heat flow should not be less than 1m/2. All floors produced in a dry environment must be kept in a real temperature of more than 24°C before use.8 Color rate test
According to GT/T8427-1998, two test pieces are placed in the test box together with the 5-color sheep standard specified in I750, and the other test piece is kept in the test box. The temperature of the blackboard in the test box is 45°C and the relative humidity is 55%. When the color change is equivalent to the gray scale specified in GR73 (E-grade blue wool product GB25C), the test is terminated. The color change grade of the test piece is evaluated by the color elasticity specified in GB25, and the color rate is expressed by the smaller difference of the two test pieces. 6.9 Heating dimensional change rate
6.9.1 Instrument
) Machine-mounted bellows 2
b) Caliper, the precision is 0.n2rm.
6.9.2 Test Procedure
Draw two parallel lines 25mm from the edge of the specimen along the test piece as shown in Figure 2, and mark the two points. Use a vernier caliper to measure the distance between the two reference points in the longitudinal direction and the horizontal direction respectively, with an accuracy of U.U2m. Then place the test piece on a sheet of paper or on a flat plate or an unhooked flat plate (F): The test piece should be placed in a temperature controlled room with a temperature of 1000 °C. The vertical distance between the flat plate and the oven should not be less than 0m. Keep the h plate in the market, under the standard bar 21, measure the distance between the reference points in the longitudinal direction, with an accuracy of 0.02mm1. Place a 180mmX180mx13mm flat copper plate on the surface of the test piece. 20a
Figure 2 Schematic diagram of dimensional deterioration rate during heating
GB/T 4085—2005
6.9.3 Test results
The test data are calculated by the formula (2). The half mean of the dimensional change during heating in the horizontal direction and in the horizontal direction is calculated respectively, and the half mean of the dimensional change in the horizontal direction is calculated to be U. flow.
Dimension change, :
The distance between the shallow and shallow spaces before heating: :
The distance between the hot core and the hot core is m. 6.10 Heating process
6.10.1 Temperature chamber accuracy -2C
b High standard size, 3.mm.
6.10.2 Test steps
LL. × ICC
Specially require four changes for each test piece, and then place each test piece on the resistant layer, flat on a polished or rusted surface, test piece: m or more, put it in a bellows with a temperature of 60% + 2, and the half of the test piece should be vertical to the center of the oven 100mm, and the distance between the flat plate and the test piece should be no less than 100mr1. Keep it for 6 hours, and do not move the test piece. Place it under standard conditions for 24h. The monthly quality vernier caliper test piece reaches the upper limit of the range between the half and the return (on the belt), and make a record. .10.3 Test results
Each data is subtracted from the average degree of ground pull, and the same test piece has 3 values. The calculated value is not the same as the heat warpage, and the error is correct to rm
6.11 Brush resistance
6.11.1 Homogeneous materials are reported according to 15 (56.-2301 8.%. 2.2 The requirements are carried out for grinding [rotation, 6.11.2 Composite nuclear technology (/1181-233) 3.1 The specified section 2 test pieces are selected for sincere testing: 2 options are used for users with light and low rotation stimulation. The wear resistance ratio is not shown.
6.12 Limit of harmful substances
Continued from the previous 1318536 is determined to be carried out: Www.bzxZ.net
7 Inspection rules
7.1 Inspection classification
Pick up and inspect! Inspection type inspection category: 7.1.1 Factory inspection
Out, the whole inspection items are 1, and, single front volume, heat scale, chemical single road. Among them, 6 and 5.2 are inspected one by one. .: The surface quality of the vehicle is provided, and the size is adde
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