Some standard content:
QB/T1664-1998
This standard adopts the relevant principles, instrument calibration methods and other technical contents in ISO3036:1975 (confirmed in 1987-06) "Paperboard-Determination of Puncture Strength".
International standards stipulate that the Beach-type punch strength tester is used for the paperboard punch strength test. There are several different structures of instruments designed based on the Beach-type instrument principle. Although these instruments have different structural types, their basic characteristic parameters and overall technical requirements are consistent. The technical content of this standard is applicable to Beach-type instruments of any structure. This standard has modified and improved the technical requirements, test methods, and quality classification of the whole machine of the light industry standard QB/T1664-1992 "Paperboard Puncture Strength Tester". The revised text has more complete technical content, and the overall level of the standard has been improved. The new standard can more accurately reflect the actual technical status of the product. This standard will replace QB/T1664-1992 from the date of implementation. This standard is proposed by the Industry Management Department of the State Bureau of Light Industry. This standard is under the jurisdiction of the National Light Industry Machinery Standardization Center. The drafting units of this standard are: Sichuan Changjiang Papermaking Instrument Factory and National Paper Quality Supervision and Inspection Center. The main drafter of this standard is Lv Huiqing.
1 Scope
Light Industry Industry Standard of the People's Republic of China
Paperboard Puncture Strength Tester
QB/T1664—1998
neqISo3036:1975
Replaces QB/T1664—1992
This standard specifies the product classification, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of paperboard puncture strength testers.
This standard applies to puncture strength testers designed based on the structural principle of the Beech puncture tester and used for puncture strength tests of paperboard (including corrugated paperboard) (hereinafter referred to as "puncture testers"). The periodic technical status inspection of the puncture tester during use should also be used as a reference. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191-1991 Pictorial signs for packaging storage and transportation
GB/T2679.7-1981 Determination of cardboard puncture strength GB/T13306--1991 Signs
GB/T14253—1993 General technical conditions for light industrial machinery QB/T1588.5-1996 General technical conditions for light industrial machinery packaging 3 Product classification
3.1 The puncture instrument is divided into single-column type, integral type, split combination type and other structural types according to the overall support structure. The puncture instruments with different structural types but design principles and structural characteristic parameters that meet the requirements of GB/T2679.7 should belong to the same type of instruments. 3.2 The puncture instrument shall be named according to the product structure and applicable field. The compilation of the puncture instrument model shall comply with the relevant national standards or industry standards.
4 Technical requirements
4.1 Working conditions
a) Room temperature 10℃～35℃;
b) The instrument is placed on a solid and stable base or fixed on a solid foundation to ensure that there is no energy loss during the operation and the overall horizontal and vertical references are reliable;
c) There should be enough space around the instrument to ensure that the operation process is barrier-free; d) The working environment is clean and vibration-free.
4.2 Structural characteristic parameters and requirements
The structural characteristic parameters and requirements of any structural type of Beech-type puncture instrument shall comply with the provisions of this standard. 4.2.1 The composition and basic characteristics of the pendulum system of the puncture instrument The pendulum system of the puncture instrument consists of five parts: straight arm, arc arm, pyramid (also known as "puncture head"), gear-changing weight, and balance adjustment weight. The positioning of the combined pendulum system in the overall system of the penetrator shall comply with the provisions of Table 1. The geometrical dimensions and characteristic requirements of the pendulum system pyramid shall comply with the provisions of Table 2.
Approved by the State Bureau of Light Industry on May 14, 1998
Implemented on March 1, 1999
Waiting for work
Center of mass position
On the horizontal plane containing the center line of the pendulum axis
Pyramid shape
Regular triangular pyramid
Free hanging state
Center of mass position
On the horizontal plane containing the pendulum axis
QB/T 1664
Overall positioning of the pendulum system
Waiting for work
Top position of the pyramid
Vertical plane from the vertical plane
Center of mass
±1 mm
Pyramid positioning
Free hanging state
Pyramid top position
Distance from horizontal plane
Table 2 Geometric dimensions and characteristic requirements of pendulum system pyramid Dimensions of pyramid, mm
Side length of bottom surface
(dimension after rounding of edge)
Height of pyramid
4.2.2 Characteristic parameters and requirements of the specimen clamping device of the puncture instrument Edge fillet radius
R1. 0~~R1. 6
(usually R1.5)
Pyramid installation
State when the pyramid passes through
half of the horizontal plane
Pyramid symmetry
Center line is perpendicular to the horizontal plane
Mass of pyramid·g
One side of the bottom surface is parallel to the center line of the pendulum axis
, and the extension line of the opposite vertex
passes through the center line of the pendulum axis
(reference value)
The specimen clamping device of the puncture instrument consists of upper and lower clamping plates, spring pressure mechanism and operating mechanism. The characteristic dimensions and requirements of the clamping device shall comply with the provisions of Table 3.
Table 3 Requirements for clamping device characteristics
Geometric dimensions of clamping plate, mm
Positioning of clamping plate
The clamping plane
of the fixed plate is above the horizontal plane
within 7mm of the center line of the pendulum
Middle of clamping plate
Side length of regular triangle hole
100±2
Note: The upper clamping plate should be the fixed clamping plate. Regular triangle hole
Radius of the arc of the vertex
The range classification and indication accuracy classification of the penetration instrument shall comply with the provisions of Table 4. Table 4 Range classification and accuracy classification
Measurement range,
Range
Resolution
Indication error
Effective area
>175×175
Indication accuracy, J
Press plate clamping
Pressure range
250~800
Indication repeatability error
4.4 During a test of the puncture instrument, the energy loss caused by the combined influence of friction and air resistance shall not exceed 1% of the maximum value of the scale of each grade. The substitute index for measuring the influence of friction and air resistance of the pendulum shaft shall comply with the following provisions: Under the measurement condition of grade A (i.e., measurement without adding grade weight to the pendulum system), release the pendulum system from the initial state (i.e., the waiting state) to make free reciprocating swings until the swing stops completely, and the number of reciprocating swings shall be greater than 120 times.
4.5 The energy loss caused by the friction resistance of the pointer system of the puncture instrument shall be measured by the substitute index in accordance with the following provisions: let the pendulum system do two free swings without a sample. The first swing is for the pointer to zero, that is, the pointer lever pushes the pointer from the maximum scale position to the zero scale position (the first swing is called the friction swing with the pointer). In the second swing, the pointer does not move at the zero line position, and there is no relative movement between the pointer and the pendulum shaft. When the pendulum system swings to the farthest position, the pointer lever pushes the pointer from the zero line position for a very short distance (the second swing is called the friction swing without the pointer). The difference between the pointer positions of the two swings is the substitute index of the friction resistance of the pointer, which should not exceed 3mm. 4.6 The neck of the penetration head of the penetration instrument should be equipped with a triangular sleeve (also called "anti-friction ring" or "damping ring") to prevent friction between the arc-shaped swing arm and the sample. When the triangular sleeve is separated from the penetration head, the energy loss caused by friction should not exceed 0.25J. 4.7 The clamping force of the specimen clamping mechanism of the penetration instrument should be adjustable. When the lower pressure plate is opened by 2mm~3mm, the clamping force should be not less than 380N. The maximum opening distance of the movable splint should be not less than 20mm. 4.8 Operating system
4.8.1 The specimen clamping handle should be flexible and labor-saving to control the opening and closing of the movable splint. 4.8.2 The pendulum control mechanism should be able to reliably control the stopping, locking and releasing of the pendulum body. The operation of each operating handle and knob should be flexible and convenient, and the function should be reliable.
4.9 Operational safety and protection
The penetration instrument shall have a reliable operational safety protection cover, which shall be made of transparent organic glass material with a thickness of not less than 5mm.
4.10 The scale of the penetration instrument shall meet the following requirements: a) The scale shall be made of aluminum or copper plate with a thickness of not less than 3mm; b) The scale plate surface shall be flat and smooth;
c) The scale scale shall be clear and obvious:
d) The installation position of the scale shall be reliable, the support shall be firm and stable, and there shall be no shaking. 4.11 The safety, hygiene, processing, appearance and other requirements of the penetration instrument shall comply with the provisions of GB/T14253. 5 Test methods
5.1 Standard instruments, tools and gauges for testing The standard instruments and tools used for the penetration instrument inspection (verification) shall include: a) A set of standard codes for indicating value inspection. The relative error of the magnetic code quality is ±0.1%; b) Special magnetic code for sample clamping force inspection. Gravity 380N, relative mass error ±0.1%; c) Special test fixture for anti-friction ring resistance test (also known as "anti-friction ring retainer"); d) Plumb bob with line:
e) Feeler gauge (Type I, Group 42 accuracy); f) Level 2 square box for inspection;
g) Vernier height gauge with graduation value 0.05mm;
h) Other general-purpose measuring tools.
5.2 Test conditions
The test should be carried out under the conditions specified in 4.1. 5.3 Test of the accuracy of the indication in 4.3
Test method: The indication accuracy of the penetration instrument is tested by using the simulated work method of lifting a heavy object with a pendulum system to test the indication of the scale of each range segment. This standard does not recommend the initial potential energy test method, which is incomplete and cannot meet the requirements of this standard. Inspection procedures and requirements:
a) Selection of inspection points: Select five evenly distributed inspection points within the range of 20%~80% of the maximum value of each range, test each point three times according to the process, and take the arithmetic mean of the three tests as the actual measured value of the inspection point indication. Calculate the indication error and indication repeatability error based on the nominal value of the inspection point:
L) Inspection operation: Remove the positioning pins and fixing screws of the sample clamping mechanism, push the whole backward to a certain angle (the angle should be greater than 221
QB/T1664—1998
90°), and then perform a series of simulated puncture and interception test operations such as zeroing the pointer, installing the calibration code, releasing the pendulum, and reading on the scale; c) The indication error and indication repeatability error are calculated using formulas (1) and (2). qE -E
b=Eimax —Eimin
Where: 9—indication error of the detection point, J; b——indication repeatability error of the detection point, J; E——nominal value of the detection point, J;
E—arithmetic mean of three tests at the same detection point, J; Eimax—maximum value of three tests at the detection point, J; Eimin—minimum value of three tests at the same detection point, J. 5.4 Inspection of friction and air resistance of the pendulum shaft in 4.4 Inspection precautions: The horizontal and vertical references of the whole machine must be adjusted during inspection. The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.4. 5.5 Inspection of friction resistance of the pointer system in 4.5 Inspection precautions: The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.5. 5.6 Test of the resistance power consumption of the anti-friction ring in 4.6 (1)
Test method: Install the special inspection fixture (anti-friction ring retainer) on the penetration tester bracket (the installation position is the same as the position of the sample holder), and then conduct a no-load simulation penetration test (the no-load test uses a Class A scale). The anti-friction ring will be cut off by the retainer and separated from the penetration head. The pointer indication of the simulation test is the resistance power consumption value of the anti-friction ring. Repeat the simulation test three times, and take the arithmetic mean of the pointer indications of the three tests, accurate to 0.01J. 5.7 Test of the clamping force of the sample in 4.7
The clamping pressure of the movable clamp of the penetration tester on the sample is related to the gap between the two clamps. This standard stipulates that when the two clamps are opened 2mm~~3mm, the clamping pressure reaches 380N, which is qualified. Inspection method: Add a force magnetic code with a gravity of 380N at an appropriate position under the movable clamping plate. The gravity of the magnetic code is opposite to the direction of the sample clamping force. Under the action of the code gravity, the upper and lower clamping plates will be pulled apart by a certain distance. Use a vernier caliper to measure. When the distance is between 2mm3mm, it is qualified.
5.8 The structural characteristic parameters of 4.2 and the overall positioning of the pendulum system should be measured and inspected as required. 5.9 4.8, 4.9, 4.104.11 should be measured or visually inspected as required. 6 Inspection rules
6.1 The factory inspection of the puncture instrument should be fully inspected according to this standard. 6.2 The main measurable performance indicators of the puncture instrument must all meet the requirements of this standard. The unqualified items of non-measuring general performance are allowed to be repaired to meet the requirements.
Note: Non-measuring general performance refers to surface quality and non-quantitative indicators that do not affect the metrological performance of the whole machine. 6.3 The quality level of the puncture instrument shall be determined according to the provisions of Table 4, provided that both the quantitative and non-quantitative indicators meet the requirements. 6.4 The puncture instrument packaging shall be sampled and re-inspected before storage. The re-inspection rules are as follows: a) Stratified random sampling shall be adopted for re-inspection;
b) The qualified number of re-inspection shall be zero;
c) The re-inspection sample shall be 10% of the inspection batch, and the decimal of the number of sampling units shall be rounded up to an integer. When the batch is less than 20 units, the sample shall be no less than 3 units, and when the batch is less than 10 units, the sample shall be no less than 2 units; d) The samples shall be checked item by item according to the requirements of this standard. If unqualified products appear in the samples, a second extended sampling shall be carried out, and the proportion of the extended sampling shall be 20% of the inspection batch (excluding the samples taken for the first time). If unqualified products appear again in the second sampling, the whole batch shall be rejected, and the products shall be re-assembled for inspection after being reworked after being carefully selected.
—1998
QB/T 1664
6.5 The measured data of the main items of the factory inspection of the puncture instrument shall be recorded in the random documents. Without the documents proving the qualified product quality, the product cannot leave the factory.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marking
The puncture instrument shall be marked with a sign, which shall comply with the provisions of GB/T13306. The sign is made of copper or aluminum and includes: a) manufacturer's name;
b) product name, model and trademark;
c) main technical parameters of the product;
d) product quality level mark;
e) manufacturing date, number or production batch number. 7.1.2 Packaging marking
The product packaging marking shall comply with the provisions of GB191. The outer surface of the product packaging box should have text and symbolic marks, including: a) product name;
b) manufacturer name, address and postal code; c) shipping and receiving marks and the year and month of production;
d) box number;
e) precision instrument, handle with care, moisture-proof, sun-proof, upright direction symbols; f) gross weight.
7.2 Packaging
7.2.1 Product packaging should comply with the provisions of QB/T1588.5. 7.2.2 Random documents should be complete and the content of the documents should be accurate. Random documents should include product qualification certificates, metrological verification certificates, product instructions and packing lists.
7.3 Transportation
The packaged products should comply with the relevant documents of the railway, land, water and other transportation departments during transportation. Transportation requirements should be specified for products with special requirements.
7.4 Storage
The product should be stored in a dry, ventilated, rainproof place and should be placed stably. During the specified storage period, the product should not rust.3. Test of the accuracy of indication
Test method: The accuracy of the indication of the penetration instrument is tested by simulating the work of lifting a heavy object with a pendulum system. The initial potential test method is not recommended in this standard, as it is incomplete and cannot meet the requirements of this standard. Test procedures and requirements:
a) Selection of test points: Select five test points evenly distributed within the range of 20% to 80% of the maximum value of each range, test each point three times according to the process, and take the arithmetic mean of the three tests as the actual measured value of the test point indication. The indication error and indication repeatability error are calculated based on the nominal value of the test point:
L) Test operation: remove the positioning pin and fixing screw of the sample clamping mechanism, push the whole backward for a certain angle (the angle should be greater than 221
QB/T1664—1998
90°), and then perform a series of simulated penetration test operations such as pointing the pointer to zero, installing the calibration code, releasing the pendulum, and reading on the scale; c) The indication error and indication repeatability error are calculated using formula (1) and formula (2). qE -E
b=Eimax —Eimin
Where: 9—indication error of the detection point, J; b——indication repeatability error of the detection point, J; E——nominal value of the detection point, J;
E—arithmetic mean of three tests at the same detection point, J; Eimax—maximum value of three tests at the detection point, J; Eimin—minimum value of three tests at the same detection point, J. 5.4 Inspection of friction and air resistance of the pendulum shaft in 4.4 Inspection precautions: The horizontal and vertical references of the whole machine must be adjusted during inspection. The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.4. 5.5 Inspection of friction resistance of the pointer system in 4.5 Inspection precautions: The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.5. 5.6 Test of the resistance power consumption of the anti-friction ring in 4.6 (1)
Test method: Install the special inspection fixture (anti-friction ring retainer) on the penetration tester bracket (the installation position is the same as the position of the sample holder), and then conduct a no-load simulation penetration test (the no-load test uses a Class A scale). The anti-friction ring will be cut off by the retainer and separated from the penetration head. The pointer indication of the simulation test is the resistance power consumption value of the anti-friction ring. Repeat the simulation test three times, and take the arithmetic mean of the pointer indications of the three tests, accurate to 0.01J. 5.7 Test of the clamping force of the sample in 4.7
The clamping pressure of the movable clamp of the penetration tester on the sample is related to the gap between the two clamps. This standard stipulates that when the two clamps are opened 2mm~~3mm, the clamping pressure reaches 380N, which is qualified. Inspection method: Add a force magnetic code with a gravity of 380N at an appropriate position under the movable clamping plate. The gravity of the magnetic code is opposite to the direction of the sample clamping force. Under the action of the code gravity, the upper and lower clamping plates will be pulled apart by a certain distance. Use a vernier caliper to measure. When the distance is between 2mm3mm, it is qualified.
5.8 The structural characteristic parameters of 4.2 and the overall positioning of the pendulum system should be measured and inspected as required. 5.9 4.8, 4.9, 4.104.11 should be measured or visually inspected as required. 6 Inspection rules
6.1 The factory inspection of the puncture instrument should be fully inspected according to this standard. 6.2 The main measurable performance indicators of the puncture instrument must all meet the requirements of this standard. The unqualified items of non-measuring general performance are allowed to be repaired to meet the requirements.
Note: Non-measuring general performance refers to surface quality and non-quantitative indicators that do not affect the metrological performance of the whole machine. 6.3 The quality level of the puncture instrument shall be determined according to the provisions of Table 4, provided that both the quantitative and non-quantitative indicators meet the requirements. 6.4 The puncture instrument packaging shall be sampled and re-inspected before storage. The re-inspection rules are as follows: a) Stratified random sampling shall be adopted for re-inspection;
b) The qualified number of re-inspection shall be zero;
c) The re-inspection sample shall be 10% of the inspection batch, and the decimal of the number of sampling units shall be rounded up to an integer. When the batch is less than 20 units, the sample shall be no less than 3 units, and when the batch is less than 10 units, the sample shall be no less than 2 units; d) The samples shall be checked item by item according to the requirements of this standard. If unqualified products appear in the samples, a second extended sampling shall be carried out, and the proportion of the extended sampling shall be 20% of the inspection batch (excluding the samples taken for the first time). If unqualified products appear again in the second sampling, the whole batch shall be rejected, and the products shall be re-assembled for inspection after being reworked after being carefully selected.
—1998
QB/T 1664
6.5 The measured data of the main items of the factory inspection of the puncture instrument shall be recorded in the random documents. Without the documents proving the qualified product quality, the product cannot leave the factory.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marking
The puncture instrument shall be marked with a sign, which shall comply with the provisions of GB/T13306. The sign is made of copper or aluminum and includes: a) manufacturer's name;
b) product name, model and trademark;
c) main technical parameters of the product;
d) product quality level mark;
e) manufacturing date, number or production batch number. 7.1.2 Packaging marking
The product packaging marking shall comply with the provisions of GB191. The outer surface of the product packaging box should have text and symbolic marks, including: a) product name;
b) manufacturer name, address and postal code; c) shipping and receiving marks and the year and month of production;
d) box number;
e) precision instrument, handle with care, moisture-proof, sun-proof, upright direction symbols; f) gross weight.
7.2 Packaging
7.2.1 Product packaging should comply with the provisions of QB/T1588.5. 7.2.2 Random documents should be complete and the content of the documents should be accurate. Random documents should include product qualification certificates, metrological verification certificates, product instructions and packing lists.
7.3 Transportation
The packaged products should comply with the relevant documents of the railway, land, water and other transportation departments during transportation. Transportation requirements should be specified for products with special requirements.
7.4 Storage
The product should be stored in a dry, ventilated, rainproof place and should be placed stably. During the specified storage period, the product should not rust.3. Test of the accuracy of indication
Test method: The accuracy of the indication of the penetration instrument is tested by simulating the work of lifting a heavy object with a pendulum system. The initial potential test method is not recommended in this standard, as it is incomplete and cannot meet the requirements of this standard. Test procedures and requirements:
a) Selection of test points: Select five test points evenly distributed within the range of 20% to 80% of the maximum value of each range, test each point three times according to the process, and take the arithmetic mean of the three tests as the actual measured value of the test point indication. The indication error and indication repeatability error are calculated based on the nominal value of the test point:
L) Test operation: remove the positioning pin and fixing screw of the sample clamping mechanism, push the whole backward for a certain angle (the angle should be greater than 221
QB/T1664—1998
90°), and then perform a series of simulated penetration test operations such as pointing the pointer to zero, installing the calibration code, releasing the pendulum, and reading on the scale; c) The indication error and indication repeatability error are calculated using formula (1) and formula (2). qE -E
b=Eimax —Eimin
Where: 9—indication error of the detection point, J; b——indication repeatability error of the detection point, J; E——nominal value of the detection point, J;
E—arithmetic mean of three tests at the same detection point, J; Eimax—maximum value of three tests at the detection point, J; Eimin—minimum value of three tests at the same detection point, J. 5.4 Inspection of friction and air resistance of the pendulum shaft in 4.4 Inspection precautions: The horizontal and vertical references of the whole machine must be adjusted during inspection. The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.4. 5.5 Inspection of friction resistance of the pointer system in 4.5 Inspection precautions: The sample holder components should be removed during inspection. Inspection method: Actual measurement according to the method specified in 4.5. 5.6 Test of the resistance power consumption of the anti-friction ring in 4.6 (1)
Test method: Install the special inspection fixture (anti-friction ring retainer) on the penetration tester bracket (the installation position is the same as the position of the sample holder), and then conduct a no-load simulation penetration test (the no-load test uses a Class A scale). The anti-friction ring will be cut off by the retainer and separated from the penetration head. The pointer indication of the simulation test is the resistance power consumption value of the anti-friction ring. Repeat the simulation test three times, and take the arithmetic mean of the pointer indications of the three tests, accurate to 0.01J. 5.7 Test of the clamping force of the sample in 4.7
The clamping pressure of the movable clamp of the penetration tester on the sample is related to the gap between the two clamps. This standard stipulates that when the two clamps are opened 2mm~~3mm, the clamping pressure reaches 380N, which is qualified. Inspection method: Add a force magnetic code with a gravity of 380N at an appropriate position under the movable clamping plate. The gravity of the magnetic code is opposite to the direction of the sample clamping force. Under the action of the code gravity, the upper and lower clamping plates will be pulled apart by a certain distance. Use a vernier caliper to measure. When the distance is between 2mm3mm, it is qualified.
5.8 The structural characteristic parameters of 4.2 and the overall positioning of the pendulum system should be measured and inspected as required. 5.9 4.8, 4.9, 4.104.11 should be measured or visually inspected as required. 6 Inspection rules www.bzxz.net
6.1 The factory inspection of the puncture instrument should be fully inspected according to this standard. 6.2 The main measurable performance indicators of the puncture instrument must all meet the requirements of this standard. The unqualified items of non-measuring general performance are allowed to be repaired to meet the requirements.
Note: Non-measuring general performance refers to surface quality and non-quantitative indicators that do not affect the metrological performance of the whole machine. 6.3 The quality level of the puncture instrument shall be determined according to the provisions of Table 4, provided that both the quantitative and non-quantitative indicators meet the requirements. 6.4 The puncture instrument packaging shall be sampled and re-inspected before storage. The re-inspection rules are as follows: a) Stratified random sampling shall be adopted for re-inspection;
b) The qualified number of re-inspection shall be zero;
c) The re-inspection sample shall be 10% of the inspection batch, and the decimal of the number of sampling units shall be rounded up to an integer. When the batch is less than 20 units, the sample shall be no less than 3 units, and when the batch is less than 10 units, the sample shall be no less than 2 units; d) The samples shall be checked item by item according to the requirements of this standard. If unqualified products appear in the samples, a second extended sampling shall be carried out, and the proportion of the extended sampling shall be 20% of the inspection batch (excluding the samples taken for the first time). If unqualified products appear again in the second sampling, the whole batch shall be rejected, and the products shall be re-assembled for inspection after being reworked after being carefully selected.
—1998
QB/T 1664
6.5 The measured data of the main items of the factory inspection of the puncture instrument shall be recorded in the random documents. Without the documents proving the qualified product quality, the product cannot leave the factory.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marking
The puncture instrument shall be marked with a sign, which shall comply with the provisions of GB/T13306. The sign is made of copper or aluminum and includes: a) manufacturer's name;
b) product name, model and trademark;
c) main technical parameters of the product;
d) product quality level mark;
e) manufacturing date, number or production batch number. 7.1.2 Packaging marking
The product packaging marking shall comply with the provisions of GB191. The outer surface of the product packaging box should have text and symbolic marks, including: a) product name;
b) manufacturer name, address and postal code; c) shipping and receiving marks and the year and month of production;
d) box number;
e) precision instrument, handle with care, moisture-proof, sun-proof, upright direction symbols; f) gross weight.
7.2 Packaging
7.2.1 Product packaging should comply with the provisions of QB/T1588.5. 7.2.2 Random documents should be complete and the content of the documents should be accurate. Random documents should include product qualification certificates, metrological verification certificates, product instructions and packing lists.
7.3 Transportation
The packaged products should comply with the relevant documents of the railway, land, water and other transportation departments during transportation. Transportation requirements should be specified for products with special requirements.
7.4 Storage
The product should be stored in a dry, ventilated, rainproof place and should be placed stably. During the specified storage period, the product should not rust.7 Inspection of the clamping force of the specimen
The clamping pressure of the movable clamping plate of the penetration instrument on the specimen is related to the gap between the two clamping plates. This standard stipulates that when the two clamping plates are opened by 2mm~~3mm, the clamping pressure reaches 380N, which is qualified. Inspection method: Add a force magnetic code with a gravity of 380N at an appropriate position under the movable clamping plate. The gravity of the magnetic code is opposite to the direction of the clamping force of the specimen. Under the action of the gravity of the code, the upper and lower clamping plates will be pulled apart by a certain distance. Use a vernier caliper to measure. When the opening distance is between 2mm3mm, it is qualified.
5.8 The structural characteristic parameters of 4.2 and the overall positioning of the pendulum system shall be measured and checked as required. 5.9 4.8, 4.9, 4.104.11 shall be measured or visually inspected as required. 6 Inspection rules
6.1 The factory inspection of the penetration instrument shall be fully inspected in accordance with this standard. 6.2 The main measurable performance indicators of the penetration instrument must all meet the requirements of this standard. Non-measurable general performance items that are unqualified are allowed to be repaired to meet the requirements.
Note: Non-measurable general performance refers to surface quality and non-quantitative indicators that do not affect the metrological performance of the whole machine. 6.3 The quality level of the penetration instrument should be determined according to the provisions of Table 4, provided that both quantitative and non-quantitative indicators meet the requirements. 6.4 Sampling re-inspection must be carried out before the packaging of the penetration instrument is put into storage. The re-inspection rules are as follows: a) Stratified random sampling is adopted for re-inspection;
b) The number of qualified judgments for re-inspection is zero;
c) The re-inspection sample is 10% of the inspection batch, and the decimal of the number of sampling units is rounded up to an integer. When the batch is less than 20 units, the sample should be no less than 3 units, and when the batch is less than 10 units, the sample should be no less than 2 units; d) The samples shall be checked item by item according to the requirements of this standard. If unqualified products appear in the samples, a second extended sampling shall be carried out, and the proportion of extended sampling shall be 20% of the inspection batch (excluding the samples taken for the first time). If unqualified products appear again in the second sampling, the whole batch shall be rejected, and after being carefully selected and reworked, the batch shall be re-inspected.
—1998
QB/T 1664
6.5 The measured data of the main items of the factory inspection of the puncture instrument shall be recorded in the random documents. Without the documents proving the qualified quality of the products, the products shall not leave the factory.
7 Marking, packaging, transportation, storage
7.1 Marking
7.1.1 Product marking
The puncture instrument shall be marked with a label, which shall comply with the provisions of GB/T13306. The label shall be made of copper or aluminum and shall include: a) manufacturer’s name;
b) product name, model and trademark;
c) product main technical parameters;
d) product quality grade mark;
e) manufacturing date, number or production batch number. 7.1.2 Packaging marking
Product packaging marking shall comply with the provisions of GB191. The outer surface of the product packaging box should have text and symbolic marks, including: a) product name;
b) manufacturer name, address and postal code; c) shipping and receiving marks and the year and month of production;
d) box number;
e) precision instrument, handle with care, moisture-proof, sun-proof, upright direction symbols; f) gross weight.
7.2 Packaging
7.2.1 Product packaging should comply with the provisions of QB/T1588.5. 7.2.2 Random documents should be complete and the content of the documents should be accurate. Random documents should include product qualification certificates, metrological verification certificates, product instructions and packing lists.
7.3 Transportation
The packaged products should comply with the relevant documents of the railway, land, water and other transportation departments during transportation. Transportation requirements should be specified for products with special requirements.
7.4 Storage
The product should be stored in a dry, ventilated, rainproof place and should be placed stably. During the specified storage period, the product should not rust.7 Inspection of the clamping force of the specimen
The clamping pressure of the movable clamping plate of the penetration instrument on the specimen is related to the gap between the two clamping plates. This standard stipulates that when the two clamping plates are opened by 2mm~~3mm, the clamping pressure reaches 380N, which is qualified. Inspection method: Add a force magnetic code with a gravity of 380N at an appropriate position under the movable clamping plate. The gravity of the magnetic code is opposite to the direction of the clamping force of the specimen. Under the action of the gravity of the code, the upper and lower clamping plates will be pulled apart by a certain distance. Use a vernier caliper to measure. When the opening distance is between 2mm3mm, it is qualified.
5.8 The structural characteristic parameters of 4.2 and the overall positioning of the pendulum system shall be measured and checked as required. 5.9 4.8, 4.9, 4.104.11 shall be measured or visually inspected as required. 6 Inspection rules
6.1 The factory inspection of the penetration instrument shall be fully inspected in accordance with this standard. 6.2 The main measurable performance indicators of the penetration instrument must all meet the requirements of this standard. Non-measurable general performance items that are unqualified are allowed to be repaired to meet the requirements.
Note: Non-measurable general performance refers to surface quality and non-quantitative indicators that do not affect the metrological performance of the whole machine. 6.3 The quality level of the penetration instrument should be determined according to the provisions of Table 4, provided that both quantitative and non-quantitative indicators meet the requirements. 6.4 Sampling re-inspection must be carried out before the packaging of the penetration instrument is put into storage. The re-inspection rules are as follows: a) Stratified random sampling is adopted for re-inspection;
b) The number of qualified judgments for re-inspection is zero;
c) The re-inspection sample is 10% of the inspection batch, and the decimal of the number of sampling units is rounded up to an integer. When the batch is less than 20 units, the sample should be no less than 3 units, and when the batch is less than 10 units, the sample should be no less than 2 units; d) The samples shall be checked item by item according to the requirements of this standard. If unqualified products appear in the samples, a second extended sampling shall be carried out, and the proportion of extended sampling shall be 20% of the inspection batch (excluding the samples taken for the first time). If unqualified products appear again in the second sampling, the whole batch shall be rejected, and after being carefully selected and reworked, the batch shall be re-inspected.
—1998
QB/T 1664
6.5 The measured data of the main items of the factory inspection of the puncture instrument shall be recorded in the random documents. Without the documents proving the qualified quality of the products, the products shall not leave the factory.
7 Marking, packaging, transportation, storage
7.1 Marking
7.1.1 Product marking
The puncture instrument shall be marked with a label, which shall comply with the provisions of GB/T13306. The label shall be made of copper or aluminum and shall include: a) manufacturer’s name;
b) product name, model and trademark;
c) product main technical parameters;
d) product quality grade mark;
e) manufacturing date, number or production batch number. 7.1.2 Packaging marking
Product packaging marking shall comply with the provisions of GB191. The outer surface of the product packaging box should have text and symbolic marks, including: a) product name;
b) manufacturer name, address and postal code; c) shipping and receiving marks and the year and month of production;
d) box number;
e) precision instrument, handle with care, moisture-proof, sun-proof, upright direction symbols; f) gross weight.
7.2 Packaging
7.2.1 Product packaging should comply with the provisions of QB/T1588.5. 7.2.2 Random documents should be complete and the content of the documents should be accurate. Random documents should include product qualification certificates, metrological verification certificates, product instructions and packing lists.
7.3 Transportation
The packaged products should comply with the relevant documents of the railway, land, water and other transportation departments during transportation. Transportation requirements should be specified for products with special requirements.
7.4 Storage
The product should be stored in a dry, ventilated, rainproof place and should be placed stably. During the specified storage period, the product should not rust.
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