MT/T 522-2004 Inspection specification for high strength round link chains for mining
Some standard content:
1CS 73. 100. 99
Reservation number: 15486—2005
Coal Industry Standard of the People's Republic of China
MT/T522—2004
MTTE22—_993
Inspection specification of high-tcnsile stcelchains (round link)for mining mining2004-12-14 Issued
National Development and Reform Commission
2005-06-01 Implementation
Normative reference documents
Technical specifications and regulations
Classification and inspection items
Batching rules and sampling plans
Surface inspection
Dimensional inspection
Static tensile test
Fatigue test
Bending test
Embedding impact test
Source location
Circular ring inspection and judgment criteria
Treatment of abnormal phenomena during the inspection process
MT/T 522—2004
MT/T 522—2004
This standard replaces VT/T523--1 53 high strength test specification for mines 3. This standard MT-9 has made clear provisions for the test sequence of high strength test value, and has made modifications to the single type test items and the test items of single type test data, and has made new provisions for the comparison of the test data, and has made provisions for the comparison of the test limit values. This standard was proposed by the Material Technology Development Department of the China Coal Industry Association. This standard was drafted by the Coal Industry Coal Mine Specialized Standardization Unit: Taiyuan Branch of the General Coal Research Institute. The main drafters of this standard are Lan and Gao Zi. 4 The standard replaced by the standard is M1522-19951 Standard
Test specification for high-strength round link chain for mining
MT/T 522—2002
This standard specifies the test method, sampling method, test specification and evaluation of high-strength round link chain for mining (hereinafter referred to as matching link chain).
This standard is applicable to the test of high-strength round links for mining. 2 Normative references
The following clauses become the clauses of the standard through reference in this standard. For all referenced documents with a date, all subsequent amendments (excluding errors) or revisions are not applicable to this standard. However, all parties agreed to study whether the latest version of these documents can be used: For all referenced documents without a date, the latest version is applicable to this standard GB/T 1250-198 Method of expressing and judging V limit values (B2H28.1-20U3H Number Batch inspection procedure Part 1, select batches according to the acceptance quality limit (AQI.) 02695||tt ||P/T2829-2002 Inspection counting sequence and table (applicable to the inspection of process total parts) GB/11591992 Production machine ecSE0011986 CB/18170-1387 Number of appointment rules
GB/1011988
Random number reporting and sampling sequence GR/112tR-2001
6101993)
3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Inspection lot
is the process of implementing sample inspection. Note: the inspection report is the state of knowledge (year) or light (Changan collection). .2
serimen mit
sample single
single chain for inspection from the batch: single unit, sister value policy" or meter (long multiple strip), not shown. 3.3
sample spccimcn
full recovery of the sample unit of the chain under inspection.
sample size speclmen μnil nomher number of sample units included in the detailed specification.
fnanconformity
nonconforming
the quality characteristics of the ring are in accordance with the standard specification, method: according to the severity of the nonconformity of the chain, it is classified into eight nonconformities, B is not, MT/T 522—2002
Inspection classification and items
Environmental inspection and delivery inspection
Factory inspection items: Specifications and specifications. 1 Plastic inspection and delivery inspection items
Inspection items
Surface acid content
Test monitoring Elongation under load
Static tensile strength
Breaking strength
Breaking strength monitoring Elongation K rate
Domestic labor performance
Can be lost
Type inspection
Method: + Inspection requirements are negotiated. When the user places an order, the user shall provide the requirements. Note: Indicates that the item is not inspected. The note is not used for the initial market information. The sample should be randomly sampled from the inspected product according to the method specified in B/1011118F. The chain should be sampled from the finished product and the end of the chain should be sampled. 5.2 The inspected product is not allowed to have any possible hidden defects. 5.3 6 Batch rules and descriptions
Factory items
E. When the length of a piece is greater than 1m: it is called a long piece. When the length is less than (including) 1m (called a short piece), it is counted by the number of pieces. The total number of chains contained in the batch should generally be greater than 1m. 2(000 pieces (meters), if less than 200 pieces (meters), 200 pieces (meters) shall be used. 6.2 Factory inspection of round chain shall be carried out in accordance with the secondary sampling plan for positive belt inspection specified in G5/T2828.12CC3. The quality limit shall be AQL1=. 6.3 Type inspection of round chain shall be carried out in accordance with the secondary sampling plan for discrimination level specified in 15/T2829-2002. The unqualified quality level shall be QL=to
6.4 Details of the size of each inspection port, the number of keys contained in the sample list and the number of times the sampling is carried out shall be as shown in Table 2 and Table 3. 7 Surface quality inspection
7.1 Inspection of the surface quality inspection of the ring chain shall be A, and the qualified score shall be A. 7. 2 Any of the following situations shall be classified as Class A unqualified: a) The welding area contains clips, burns, and burrs. The welding area has no ear and the chain link surface has no product concave decay 7.3. There are also process concave acne on the surface that affects the quality of the product. When the number of unqualified items is equal to 13, the item is considered as Class A unqualified: Casting system: Matching strength: Level Table 2 Factory inspection sampling plan Extension of this unit's business precision (ring: ngremm 162 mm
MT/T522—2334
Acceptance quality absorption 4QL=15
Second modification sampling determination
1: Certificate ring size Chen support surface quality special inspection month, detailed unit with ring good ticket other test sample list with strip meters table: Column 2: Ring size and agricultural surface quality gold test items in the secondary three-start determination as 4 types of unqualified items cumulative effect: 3: Static tensile strength inspection, installation of new load has no code effect small one "will be pill certainly, Table 3 type inspection sampling plan
Grid energy micro garden
Light inspection items month
Crown strip: distance)
Surface quality
Solution resistance to secondary improvement
Ground hand out room
Single mouth impact gram
Inspect and measure
Y1 aear
open the original design
too small
single ring effect ring)
Pu54 ma
1 detailed position
: individual mention + single busy
? The delivery unit
Nt -nrn
does not meet the measurement level R=0
a change in the selection plan, its effectiveness certificate
: the size and table, and the learning and inspection, to show, kill the sample benefit from the collection (meter direct display! Design: bad size and table treasure difference from the second push sample judgment number for Class A six sure effect,: pull the girl strong celebration inspection, not from the year, combined to the fixed, treasure a heart song burning will only be done on the moon good mountain to ask for retrograde:: jump mouth standard show the life of the user mother shoot requirements 0 heart 14 then tour not only the top field inspection MT/T 522-200
B size inspection
circular ring size and please difference as required (13/1127182001 in Table 1 of the heat. 8.1Www.bzxZ.net
Ring chain dimensional inspection includes two items: chain link size inspection and chain length (double length) size inspection. 8.2
3Ring chain size inspection is not classified into Class A. 8.3.1 When the ring spacing does not meet the standard requirements, it is judged as unqualified. E. 3.2H. The following size deviations are not in accordance with the standard requirements. 1. If the ring spacing does not meet the standard requirements, it is judged as unqualified. Small inner width!
Maximum outer width
Welding diameter
Coal joint length: :
[》Welding misalignment.
When the number of unqualified items in B is equal to 3 items: the specification is 1A type, day.3.3 The crown ring size inspection quantity can be a special measuring tool, which can be a two-point ruler. It must not be estimated (05m. Its outflow meets the requirements.
.3.4 When inspecting the chain link size, the sample is taken out of each meter! The attached machine extracts the bad connection standard inspection 8.4 Chain length 1 chain pairing length change!. Inspection. E.4.1 Chain 1. The length and length of the cast bars shall be inspected in accordance with the provisions of G/12718-201 Table T3: Table C:. 4.2 The length and length of the chain shall be inspected in accordance with the provisions of B/T127-8-2001 Table 3. The length and length of the cast bars shall be inspected in accordance with the provisions of G/12718-2001 Table T3:.
The length of the chain and the length of the cast bars shall be inspected in accordance with the provisions of B/T127-8-2001 Table 3. The length and length of the cast bars shall be inspected in accordance with the provisions of G/12718-2001 Table T3:. The length and length of the cast bars shall be inspected in accordance with the provisions of B/T127-8-2001 Table 3. The length and length of the cast bars shall be inspected in accordance with the provisions of B/T127-8-2001 Table T3:. rm
On the 5th day, the size of the ring shall be in accordance with the requirements of Table 2 and Table 3. When the size of the chain link (pair) is consistent with the strength of the two pieces, the size test item will be judged to be qualified.
9 Static tensile strength test
9.1 Testing machine
9.1. The testing machine shall meet the requirements of this test sequence and meet the first-level accuracy requirements specified in (B/T2155-1592. The test calibration standard shall meet the quality requirements of the testing machine calibration certificate. The test machine shall be equipped with an automatic load elongation measurement and recording system, and automatically record and draw the tensile surface line. 9.1.2 The resistance reduction test during the verification period can be used for the test. 9.2 Test samples. The position sequence of static tensile test samples shall comply with the provisions of Table 2 and Table 3. 9.3 The fixing device of the chain recording. The connection between the tensile test equipment and the strip should be light and the contact surface should be consistent. The strip drawing method during the tensile test should be GH/F. :21:9-001 6.1.2 provisions. 9.4 Test free of charge determination
9.4.t Determination of the test load and the measuring instruments used for measuring the length of the test load shall not be less than 1 num;9.4,2 Details of this test machine - after tightening, add half of the test load specified in Table 4 of GB/T_2713-2n1, and then reduce the load to the initial load. The length of the standard should be the initial load and the standard length 1: base material B/T = 27-8-2001 Table 8 heat-resistant element with a maximum of 202, 1m continuous load or (T/127182001 Table 1 of the test length specified in the book 1CC some% At this time, the standard length under the test load is completed according to the test load and the test load is under the standard length according to the formula: t- hx:00
Test elongation under load, %:
Test nominal length measured under load, in meter (rm): The nominal length under initial load, in meter (mm) MT/T 522-2004
9.5 Determination of total elongation and total breaking load of some samples. At this time, the type of sample is judged by the breaking load and the total breaking length and/or the total breaking length (2). Icn
Formula:
Total breaking length of the material,!
The total length at breaking can be measured directly by the negative law shown in Figure 1, the unit is meter (; the sample unit chain extension unit is millimeter (m) 7i
The sample unit chain link number;
Detailed unit chain link spacing, single millimeter (mm) 5.6 The judgment of the static tensile strength test result is the static tensile strength test pass judgment and unqualified judgment number shall be implemented according to the provisions of Table 2 and Table 3. 10 Reverse fatigue test
10.1 Requirements for fatigue testing machine
The accuracy of static load indication should be sufficient
The degree of the fatigue testing machine should not be lower than 1 Level, the relative error coefficient is not greater than =1. (range, the recommended value of the negative coefficient does not change much" 1 piece:
In the continuous test 10 days, the fish is still afraid of the magic should be full; the flat color check value is not greater than the full amount: t>
The load plate shows that the passive adjustment is not large, and the full forbidden process is not large. 2%, the load table specifies the short breaking load, the test load is extended to the load fee, the test load is borrowed under the elongation, the static tensile curve, the test points, the MT/T 522--?334
10.1.3 Method for the machine, the specified quantity group shall meet the requirements of the specified load of the system 6.15.1.4 The test shall be carried out according to the test requirements of 10.1.5. The test shall be carried out every year.
10.2 Test specimens and detailed information
The test specimens and detailed information shall be in accordance with the requirements of Table 3. 10.3 Chain fixing device
Chain shall be installed according to the requirements of 6.2.2 in Table 61121231. EC.4 Test procedure
The test details shall be in accordance with the requirements of Table 3.27282001 The specified symptoms and teaching, disease sound length, load currency frequency is ~1 nuclear small when the inspection, the national quality and technical supervision department strike the standard when the chain specifications in 26 hours frequency for c times / rr.in: 301 inches and the selected frequency is 350 times / m:n, the final epidemic test sample will be single ring effect of low ten drinks. 10.5 Labor strength test results judgment criteria ring chain mole labor strength test when the expansion of the unit test is not equal to the bottom of the test will not be the same as the test of the sample again two center sample unit for a test, if all the sample units are in line, then the item is broken, the paste is judged as not qualified: 11 change the value of the acid test || tt || 11. 1 change the test machine should meet 9. 11.2 The test sample is small and the test method is as follows: 11.3 The test and loading method are specified in 6B11218-2001. 4 Each test should be carried out under no impact. The maximum load is 0mm. The minimum bending potential value should not exceed 10u~.118% of the minimum bending value specified in 6H/13718-2CC1. 11.5 The roundness test is not qualified by the porcelain test. At this time, the whole item is not suitable for inspection. Two samples are disassembled and tested in reverse. The two samples will be partially matched. If it is pinned, it will be pre-tested. If it is convex, it will be judged as unqualified: 12 Notch impact value test
According to the general implementation of (L/) 127-82001 A standard 13 Data processing
13.1 The data shall comply with the provisions of -313/8171987 standard 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value: elongation under test load, elongation at break, curvature to make the effective value take a decimal point between the effective number and the effective number after the decimal point, 13.3 The measured value or its calculated value shall comply with the standard of about 9 slow stock numbers when the number is less than the original number, 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of the cold moving trolley is expected to be carried out on each day. The product type inspection is required to be included in the production. If the production capacity inspection does not exist, the production capacity inspection will not be included. 14.2 The monthly inspection rate of the ring promise factory inspection is determined by the production inspection platform. If the risk is small, the factory inspection will be determined. 15.1 If the product quality is affected by the type of pattern, etc., it will not be selected as a single day: it will not continue to be inspected frequently, and it will not be inspected frequently. During the mechanical production of the product, if one of the following conditions occurs, the inspection element will be effective, and the heavy box inspection will be forgotten. 15.2.
=) The inspection tour is interrupted by a sudden stop;
Equipment and equipment stations have unexpected damage to the ring 2
and other unavoidable events such as fire.
MT/T522—20344.4 When checking the chain link size, take out every sample of the sample! , and take out the sample of the bad connection standard for inspection. 8.4 Chain length 1 Chain matching length change! .4.1 Chain length and casting matching length standard 1, the inspection shall be carried out according to G/12718-201 Table T3: Table C: Current regulations. 4.2 Check the chain length and matching length under the condition of cutting and preservation, and the connection shall be carried out according to B/T127_8-2001 Table 3.
Check the chain length and matching length from the beginning of the load without diameter measurement. The accuracy is 1:1:1:1 value T.2 rm
On the 5th day, the size of the ring shall be in accordance with the requirements of Table 2 and Table 3. When the size of the chain link (pair) is consistent with the strength of the two pieces, the size test item will be judged to be qualified.
9 Static tensile strength test
9.1 Testing machine
9.1. The testing machine shall meet the requirements of this test sequence and meet the first-level accuracy requirements specified in (B/T2155-1592. The test calibration standard shall meet the quality requirements of the testing machine calibration certificate. The test machine shall be equipped with an automatic load elongation measurement and recording system, and automatically record and draw the tensile surface line. 9.1.2 The resistance reduction test during the verification period can be used for the test. 9.2 Test samples. The position sequence of static tensile test samples shall comply with the provisions of Table 2 and Table 3. 9.3 The fixing device of the chain recording. The connection between the tensile test equipment and the strip should be light and the contact surface should be consistent. The strip drawing method during the tensile test should be GH/F. :21:9-001 6.1.2 provisions. 9.4 Test free of charge determination
9.4.t Determination of the test load and the measuring instruments used for measuring the length of the test load shall not be less than 1 num;9.4,2 Details of this test machine - after tightening, add half of the test load specified in Table 4 of GB/T_2713-2n1, and then reduce the load to the initial load. The length of the standard should be the initial load and the standard length 1: base material B/T = 27-8-2001 Table 8 heat-resistant element with a maximum of 202, 1m continuous load or (T/127182001 Table 1 of the test length specified in the book 1CC some% At this time, the standard length under the test load is completed according to the test load and the test load is under the standard length according to the formula: t- hx:00
Test elongation under load, %:
Test nominal length measured under load, in meters (rm): The nominal length under initial load, in meters (mm) MT/T 522-2004
9.5 Determination of total elongation under load and total elongation. The type of direct judgment is the breaking load and the total breaking length and/or the total breaking length (2). Icn
Formula:
Total length of material to be broken,!
Total length at breaking can be measured directly by the negative law as shown in Figure 1, the unit is meter (; the unit of sample unit chain extension is millimeter (m) 7i
The unit of sample unit chain link number;
The unit chain link spacing is millimeter (mm) 5.6 The judgment of the static tensile strength test result is the static tensile strength test pass judgment and the unqualified judgment number shall be implemented according to the provisions of Table 2 and Table 3. 10 Reverse fatigue test
10.1 Requirements for fatigue testing machine
The accuracy of static load indication shall be sufficient to meet the requirements of
The degree of the test machine should not be lower than "level 1", the relative error coefficient should not be greater than 1. (range, the recommended value of the load does not change much:
In the continuous test for 10 days, the load plate should not be greater than 2% of the full amount, the load table should be short and the test load should be extended to the test load. The static tensile curve of the test load should be MT/T. 522--?334
10.1.3 The specified quantity group shall meet the requirements of the specified load of the series 6.15.1.4 The test shall continue to meet the test requirements of 10.1.5 and shall be expanded every year.
10.2 Test samples and details of this unit
The test group and this unit shall comply with the provisions of Table 3. 10.3 Chain fixing device
The chain shall be arranged in accordance with the provisions of 6.2.2 of Table 61121231.4 Test procedure
The test details of this unit shall be carried out in accordance with the test machine in accordance with the provisions of 3,27282001. The load and teaching, disease sound length, load frequency of ~1 small nuclear test, the national quality and technical supervision department shall use the chain specifications at 26:301 and the selected frequency is 350 times/m:n. The final test sample will have a low technical effect of ten times. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-20344.4 When checking the chain link size, take out every sample of the sample! , and take out the sample of the bad connection standard for inspection. 8.4 Chain length 1 Chain matching length change! .4.1 Chain length and casting matching length standard 1, the inspection shall be carried out according to G/12718-201 Table T3: Table C: Current regulations. 4.2 Check the chain length and matching length under the condition of cutting and preservation, and the connection shall be carried out according to B/T127_8-2001 Table 3.
Check the chain length and matching length from the beginning of the load without diameter measurement. The accuracy is 1:1:1:1 value T.2 rm
On the 5th day, the size of the ring shall be in accordance with the requirements of Table 2 and Table 3. When the size of the chain link (pair) is consistent with the strength of the two pieces, the size test item will be judged to be qualified.
9 Static tensile strength test
9.1 Testing machine
9.1. The testing machine shall meet the requirements of this test sequence and meet the first-level accuracy requirements specified in (B/T2155-1592. The test calibration standard shall meet the quality requirements of the testing machine calibration certificate. The test machine shall be equipped with an automatic load elongation measurement and recording system, and automatically record and draw the tensile surface line. 9.1.2 The resistance reduction test during the verification period can be used for the test. 9.2 Test samples. The position sequence of static tensile test samples shall comply with the provisions of Table 2 and Table 3. 9.3 The fixing device of the chain recording. The connection between the tensile test equipment and the strip should be light and the contact surface should be consistent. The strip drawing method during the tensile test should be GH/F. :21:9-001 6.1.2 provisions. 9.4 Test free of charge determination
9.4.t Determination of the test load and the measuring instruments used for measuring the length of the test load shall not be less than 1 num;9.4,2 Details of this test machine - after tightening, add half of the test load specified in Table 4 of GB/T_2713-2n1, and then reduce the load to the initial load. The length of the standard should be the initial load and the standard length 1: base material B/T = 27-8-2001 Table 8 heat-resistant element with a maximum of 202, 1m continuous load or (T/127182001 Table 1 of the test length specified in the book 1CC some% At this time, the standard length under the test load is completed according to the test load and the test load is under the standard length according to the formula: t- hx:00
Test elongation under load, %:
Test nominal length measured under load, in meters (rm): The nominal length under initial load, in meters (mm) MT/T 522-2004
9.5 Determination of total elongation under load and total elongation. The type of direct judgment is the breaking load and the total breaking length and/or the total breaking length (2). Icn
Formula:
Total length of material to be broken,!
Total length at breaking can be measured directly by the negative law as shown in Figure 1, the unit is meter (; the unit of sample unit chain extension is millimeter (m) 7i
The unit of sample unit chain link number;
The unit chain link spacing is millimeter (mm) 5.6 The judgment of the static tensile strength test result is the static tensile strength test pass judgment and the unqualified judgment number shall be implemented according to the provisions of Table 2 and Table 3. 10 Reverse fatigue test
10.1 Requirements for fatigue testing machine
The accuracy of static load indication shall be sufficient to meet the requirements of
The degree of the test machine should not be lower than "level 1", the relative error coefficient should not be greater than 1. (range, the recommended value of the load does not change much:
In the continuous test for 10 days, the load plate should not be greater than 2% of the full amount, the load table should be short and the test load should be extended to the test load. The static tensile curve of the test load should be MT/T. 522--?334
10.1.3 The specified quantity group shall meet the requirements of the specified load of the series 6.15.1.4 The test shall continue to meet the test requirements of 10.1.5 and shall be expanded every year.
10.2 Test samples and details of this unit
The test group and this unit shall comply with the provisions of Table 3. 10.3 Chain fixing device
The chain shall be arranged in accordance with the provisions of 6.2.2 of Table 61121231.4 Test procedure
The test details of this unit shall be carried out in accordance with the test machine in accordance with the provisions of 3,27282001. The load and teaching, disease sound length, load frequency of ~1 small nuclear test, the national quality and technical supervision department shall use the chain specifications at 26:301 and the selected frequency is 350 times/m:n. The final test sample will have a low technical effect of ten times. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-20343 The fixing device of the chain record
before the technical extension test, the surface between the test tool and the strip should be slightly damaged. The strip drawing method during the tensile test shall comply with the provisions of 6.1.2 of GH/F:21:9-001. 9.4 Determination of the test load rate || tt || 9.4. t Determination of the test load rate The measuring equipment and measuring instruments used shall be of a quality not less than 1 num; 9.4,2 Details of this test machine - after tightening, add half of the test load specified in Table 4 of GB/T_2713-2n1+. Then reduce the load to the initial load. The standard length should be calibrated according to the initial load: B/T=27-8-2001 Table 8 The maximum length is 202, 1m continuous load or (T/127182001 Table 1 of the test book 1CC some% At this time, the standard length under the test load is completed according to the formula: t- hx:00
Test elongation under load, %:
Test nominal length measured under load, in meters (rm): The nominal length under initial load, in meters (mm) MT/T 522-2004
9.5 Determination of total elongation under load and total elongation. The type of direct judgment is the breaking load and the total breaking length and/or the total breaking length (2). Icn
Formula:
Total length of material to be broken,!
Total length at breaking can be measured directly by the negative law as shown in Figure 1, the unit is meter (; the unit of sample unit chain extension is millimeter (m) 7i
The unit of sample unit chain link number;
The unit chain link spacing is millimeter (mm) 5.6 The judgment of the static tensile strength test result is the static tensile strength test pass judgment and the unqualified judgment number shall be implemented according to the provisions of Table 2 and Table 3. 10 Reverse fatigue test
10.1 Requirements for fatigue testing machine
The accuracy of static load indication shall be sufficient to meet the requirements of
The degree of the test machine should not be lower than "level 1", the relative error coefficient should not be greater than 1. (range, the recommended value of the load does not change much:
In the continuous test for 10 days, the load plate should not be greater than 2% of the full amount, the load table should be short and the test load should be extended to the test load. The static tensile curve of the test load should be MT/T. 522--?334
10.1.3 Method for the machine, the specified quantity group shall meet the requirements of the specified load of the system 6.15.1.4 The test shall be carried out according to the test requirements of 10.1.5. The test shall be carried out every year.
10.2 Test specimens and detailed information
The test specimens and detailed information shall be in accordance with the requirements of Table 3. 10.3 Chain fixing device
Chain shall be installed according to the requirements of 6.2.2 in Table 61121231. EC.4 Test procedure
The test details shall be in accordance with the requirements of Table 3.27282001 The symptoms and teaching materials are mature, the disease sound is long, the load frequency is ~1 small nuclear test, the national quality technical supervision department strikes the standard when the toilet chain specification is 26 times/rr.in:301 inch and the selected frequency is 350 times/m:n, and the final epidemic prevention and control sample will have a single ring effect as low as ten times. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-20343 The fixing device of the chain record
before the technical extension test, the surface between the test tool and the strip should be slightly damaged. The strip drawing method during the tensile test shall comply with the provisions of 6.1.2 of GH/F:21:9-001. 9.4 Determination of the test load rate || tt || 9.4. t Determination of the test load rate The measuring equipment and measuring instruments used shall be of a quality not less than 1 num; 9.4,2 Details of this test machine - after tightening, add half of the test load specified in Table 4 of GB/T_2713-2n1+. Then reduce the load to the initial load. The standard length should be calibrated according to the initial load: B/T=27-8-2001 Table 8 The maximum length is 202, 1m continuous load or (T/127182001 Table 1 of the test book 1CC some% At this time, the standard length under the test load is completed according to the formula: t- hx:00
Test elongation under load, %:
Test nominal length measured under load, in meters (rm): The nominal length under initial load, in meters (mm) MT/T 522-2004
9.5 Determination of total elongation under load and total elongation. The type of direct judgment is the breaking load and the total breaking length and/or the total breaking length (2). Icn
Formula:
Total length of material to be broken,!
Total length at breaking can be measured directly by the negative law as shown in Figure 1, the unit is meter (; the unit of sample unit chain extension is millimeter (m) 7i
The unit of sample unit chain link number;
The unit chain link spacing is millimeter (mm) 5.6 The judgment of the static tensile strength test result is the static tensile strength test pass judgment and the unqualified judgment number shall be implemented according to the provisions of Table 2 and Table 3. 10 Reverse fatigue test
10.1 Requirements for fatigue testing machine
The accuracy of static load indication shall be sufficient to meet the requirements of
The degree of the test machine should not be lower than "level 1", the relative error coefficient should not be greater than 1. (range, the recommended value of the load does not change much:
In the continuous test for 10 days, the load plate should not be greater than 2% of the full amount, the load table should be short and the test load should be extended to the test load. The static tensile curve of the test load should be MT/T. 522--?334
10.1.3 Method for the machine, the specified quantity group shall meet the requirements of the specified load of the system 6.15.1.4 The test shall be carried out according to the test requirements of 10.1.5. The test shall be carried out every year.
10.2 Test specimens and detailed information
The test specimens and detailed information shall be in accordance with the requirements of Table 3. 10.3 Chain fixing device
Chain shall be installed according to the requirements of 6.2.2 in Table 61121231. EC.4 Test procedure
The test details shall be in accordance with the requirements of Table 3.27282001 The symptoms and teaching materials are mature, the disease sound is long, the load frequency is ~1 small nuclear test, the national quality technical supervision department strikes the standard when the toilet chain specification is 26 times/rr.in:301 inch and the selected frequency is 350 times/m:n, and the final epidemic prevention and control sample will have a single ring effect as low as ten times. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-20344 The test should be continued or the single control should meet the test requirements 10.1.5 The test should be expanded every year.
10.2 Test samples and details of this unit
The test group and column of this unit should meet the requirements of Table 3, 10.3 Chain fixing device
Chain phenomenon is determined by the system according to 61121231 6.2.2.4 Test procedure
The test details of this unit should be carried out according to the requirements of 61121231 6.2.2.4 Test procedures
The test details of this unit should be carried out according to the test machine according to 3, 27282001. The test frequency is ~1 small nuclear inspection, the national quality and technical supervision department should use the chain specification at 26:301:350 times/m:n, and the final test sample will be low. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-20344 The test should be continued or the single control should meet the test requirements 10.1.5 The test should be expanded every year.
10.2 Test samples and details of this unit
The test group and column of this unit should meet the requirements of Table 3, 10.3 Chain fixing device
Chain phenomenon is determined by the system according to 61121231 6.2.2.4 Test procedure
The test details of this unit should be carried out according to the requirements of 61121231 6.2.2.4 Test procedures
The test details of this unit should be carried out according to the test machine according to 3, 27282001. The test frequency is ~1 small nuclear inspection, the national quality and technical supervision department should use the chain specification at 26:301:350 times/m:n, and the final test sample will be low. 10.5 Criteria for judging the results of labor strength test of circular chain: when the test units are not equal to the standards, the test piece shall be taken back for another test with two sample units at a time. If all the sample units are equal, the item shall not meet the standards and shall be judged as unqualified: 11.1 The test machine shall comply with the provisions of 9.2 and 11.2 The test sample size shall be smaller than that specified in Table 1: The depth of test and loading method shall be as specified in 6.3.2 of 6B11218-2001. 4 Each test shall be carried out under no impact - the maximum load is 0mm. The minimum bending value shall not exceed 6H/13718-2CC1 in the table? The minimum bending value specified in the industry is 10u~.1l8%
11.5. The roundness test is based on the porcelain test. Only one sample is qualified. At this time, the whole item does not meet the inspection requirements. Two samples are disassembled and tested in reverse order. If the two samples are not tested, they will be pre-tested. If the convex part is judged as unqualified: 12 notch impact value test
According to (L/) 127-82001 A standard general execution 13 Data Processing || tt || 13.1 The data should be in accordance with the provisions of the 313/8171987 specification. 13.2 The value of the small size certificate is in the effective digit (/278333) specified in the value of the decimal point: elongation under test load, elongation at break, curvature, the effective value is taken from the effective digit after the decimal point, 13.3 The measured value or its calculated value is originally set to about 9 slow strands. When the ratio is greater than 13/1255-! 9 Small full-scale excitation value comparison method,
1 Comprehensive judgment criteria for circular ring inspection
14.1 The surface ring chain type inspection of each pre-tested daily dynamic trolley, the product type inspection is included, and the load type inspection does not exist. 14.2 The monthly platform rate of the variable ring promise factory inspection is determined by the factory inspection. If the risk is small, the factory inspection will be qualified. 15 The handling of abnormal phenomena during the inspection process || 15.1 If the quality of the product is affected by the following factors: 15.2 If the product is damaged or the product is damaged, the inspection will not be repeated. 2. MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034 MT/T522-2034
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