JB/T 8708-1998 Technical requirements for 300~600MW steam turbine generator rotor forgings without center hole
Some standard content:
[(S 77. 140. 89
Machinery Industry Standard of the People's Republic of China
JB/T8708-1998
300~600MW Steam Turbine Generator
Specificatlon of the noncentral hole rotorsforgings used fron 3v--6ooMW turbine generator1998-13-19 Issued
Ministry of Machinery Industry of the People's Republic of China
1998-07-01 Implementation
8/18708·1998
This standard was proposed and supervised by the Deyang Large Scale Welding Equipment Construction Institute of the Ministry of Machinery Industry. The drafting of this standard was independently established by Qiqihar Rotary Welding Research Institute and Harbin Large Electric Machine Research Institute. The main drafters of this standard are Li Fanying, Guo Chengdan, Xin Xinfa, and Jin Xuyu. 1 Fan Jia
Machinery Industry Standard of the People's Republic of China
300~~600MW Steam Turbine Generator
Non-center Hole Rotor Forgings
Technical Conditions
Sperification cf the noncentral holr rolorsfotgings used from 3an--cooMw turblze gencratorJB/T 8708-1998
specifies the installation requirements, inspection and repair planning, test methods, specifications and markings of 3~500MW steam turbine generator non-center rotor alloy forgings. This standard is especially for the quality, quality and inspection of 300-650MW steam turbine non-center rotor alloy forgings.
2 Referenced standards
The clauses contained in the listed standards have become technical standards by reference in this standard. The versions shown are valid at the time of publication of this standard. All the above standards will be revised. The parties using the vehicle standard discussed the possibility of using a new version of the standard station, GB23-82~93
G6294-86
JB/F1581-96
3/:71783
Chemical analysis methods for iron and alloys
Method for determination of average crystal density of gold
Super Lupo transmission method for rotors and three-axis parts of steam turbine generators Technical conditions for forgings of steam turbine generator rotors
ASTMA275/A275M90 Magnetic particle inspection method for forged steel parts ASTM A41-f9
ASTM A37C 77
ASTM E381- 75
3 Ordering requirements
Direct current impact method to determine the direct current magnetic field of materials Test method for steel scale reduction machine: reduction of the generation of energy
Material and explosion-proof test method 31 The purchaser shall write the time accumulation method, soft standard, nature, period, recommended requirements for inspection and inspection items, and other requirements in the design contract or reduction agreement. The frequency and steel grade of the parts shall be marked on the drawing: Forging grade text standard number
3. The purchaser shall provide the order drawing of the forging without center hole marked with the mechanical properties test specimen (and the box processing size when necessary). 4 Technical requirements
4.1 Manufacturing process bzxz.net
4.1.1 The parts to be made shall be smelted by electrometallurgy or electrometallurgy. Other smelting methods may be used. Approved by the Ministry of Machinery Industry in 1998-0319
1.998-07-01
IR/T87U8—1998
4.1.1.2 Before storage or waiting for the parts to be smelted, the parts shall be completely degassed by air. During the vacuum process, the vacuum system shall have a positive limit of 133Pe.
4.1.2 Forging
4.1.2. The upper and lower sieves of the steel ingot shall have enough loss to remove the non-forging holes and small glandular structures. 4.1.2.2 Forgings shall be made on a machine with sufficient capacity to ensure that the entire cross section of the forging is completely penetrated. The axial centerline of the forging and the other ingot shall coincide closely. The end with the best steel quality shall be the end of the forging. 4.1.3 The corresponding factors shall be maintained at different steps of the forging diameter change during each manufacturing stage. 4.1.4 Heat treatment 4.1.4.1 Afterburning treatment is quenching and tempering. 4.1.4.2 Performance heat treatment is quenching and tempering, which shall be carried out under high pressure. The forgings should be processed at a cooling rate as fast as possible. 4.1.5 Mechanical processing 4.1.5.1 The center of the forging should be fine and light. The surface roughness should be 1.6>m. 4.1.5.2 The forgings shipped should meet the requirements of the specified size, tolerance and surface roughness in the order drawing. 4.2 Chemical composition 4.2.1 The analysis of the forging quality should meet the requirements of Table 1. The analysis of the forging quality should meet the requirements of Table 1. The deviation of Table 2 is allowed. 4.2.2 Table 1 Chemical composition 35C2NiaMoV 0.250. 35 Note: When vacuum phosphate is used, the silicon content should not be greater than 6.14S-2.4. x.
Table 2 Allowable deviation of finished products exceeding the upper and lower limits specified in the specification
25t-2Ni4VV
Note: When using vacuum oxygen, the performance difference is not allowed to exceed 1×10-4.2.3 The hydrogen content of the product is not allowed to exceed 1×10-4.3 Mechanical properties
4.3.1 The maximum mechanical properties of the product shall be as specified in Table 3. 2
Analysis comparison,
Zhang Niu Zuo et al.
JB/T 8708- 1998
Li 3 Academic properties
Business, cutting and turning are guaranteed to be
longitudinal space, heat direction, cutting space, storage space, visit space, light direction
our space, high space
all of which are qualified in the bidding. The hole properties must be noted
4.3.2 The diameter of the insert body and the anti-batch strength or the quantitative service strength value are not allowed to exceed 4MP:. 4.4 The residual stress of the specification parts is not allowed to exceed ECMPa. 4.5 The magnetic performance of the bowl shall meet the following requirements: 5.0X10°A/a 15.0X10A/m 50.0X10*A/m 120. )> ko A/c 4.b The particle size of the test sample is not coarse: No more than 6% at level 1, 4.7 Inspection 471 Pickling or magnetic particle inspection 4.1.1 The teaching rate is free of white 3, cracks, machine run and other damage. The purchaser shall ensure that the test is carried out in accordance with the requirements of the test method, including acid and powder inspection. 4.7.1.2 The purchaser shall first inspect the parts and auxiliary parts of the parts in the two sections of the test piece, and then inspect the parts in the two sections of the test piece. 4.7.1.3 The bearing belt and the transition zone of the two continents shall be inspected or inspected in accordance with the requirements of the test method. The test results shall be as follows: 25cm (referring to the maximum side length of 15m) of the new rectangular area, and 5 single defects of 6.~.mm or 2 single defects within 1~1.Fmm are allowed. Each auxiliary part is not allowed to have more than one defect, and more than one defect is allowed in the strong area of 2℃. When the above-mentioned defect is exceeded, the supply and demand parties shall make a quick judgment. 4.7.2 Ultrasonic wave detection inspection shall be carried out on the surface of the parts. The results shall meet the following requirements: a) There shall be no defects such as meal, household points, frequency holes, etc.; b) The defects with an equivalent diameter of less than 2.6 mm shall not be recorded and reported; 1) Defects with an equivalent diameter less than 1.m shall be recorded as a whole, and defects with an equivalent diameter of 1.6mm or more shall be recorded and reported; within 6m of the center of the component, there shall be no defects with an equivalent diameter greater than 1.m; or defect signals with an equivalent diameter of 1.emm;
IB/T87081998
) Within the outer circle depth of 25mm: the surface, there shall be no defects with an equivalent diameter greater than 3.2m. The remaining parts are allowed to have scattered defects with an equivalent diameter of 1.5-3.5m. However, the number of defects smaller than the original shall be less than 10%; the total number of defects of the entire component shall not exceed 3:R! Appendix 2~-2.bMIIzWhen the frequency is changed, the reduction of the case wave caused by the missing drop is not more than 6d, and the attenuation coefficient of the material is equal to or greater than 4/ir.,
47.Center square hole
4.7.3.1 The inner surface of the center hole is not allowed to have wrinkles, shrinkage holes, residual parts, pores, polishing, harmful additives and bottom defects. The total number of defects is not allowed to exceed 1, and the specific rules are as follows: 1) In the case of 60:m2 area, the number of defects with a length of 0.~1.5m is not allowed to exceed 10; 2) The number of defects with a length of 1.5--3mm is not allowed to exceed 4; 3) On the inner surface of the center hole, the number of defects with a length of 0.5~1.5m is not allowed to exceed 79. There are no defects with early distribution.
4.7.3.2 When the center hole is to be enlarged to eliminate the larger defects, the customer should first check the center hole to avoid powder pulling. The customer can reach the target. If there is any objection to the powder inspection, the customer should deal with it. 4.8 Dimensions, tolerances, surface roughness
4.8.1 The processing of forgings shall comply with the dimensions of the delivery drawings of the customer. The surface roughness of the center hole shall not exceed 1.0mm. The center hole surface roughness shall be 1.0mm: The center hole can be cut at the joints. The center hole error shall not exceed 1.0mm. The center hole axis tolerance is 1.5mm/m.
5 Inspection rules and test methods
5. Chemical analysis
5.1.1 Olefin analysis
5.1.1.1 The supplier shall take samples for smelting analysis at each furnace cycle and report the analysis results. The weight analysis results shall also be reported when multiple furnaces are used.
5.1.1.2 If the sample is not analyzed for smelting, the supplier may replace the sample with a suitable sample from the peak or sensitive surface, and report the analysis results and sampling location directly to the purchaser.
5.1.2 Analysis
For each forging, the sample shall be taken from the axial test sample of the forging, and the sample can also be taken from the axial test sample of the forging.
5.1.3 Analysis of forging
Analysis of the axial test sample shall be carried out according to the relevant method.
5.2 Performance test of small forging
5.2. After the performance is hot-blocked, it shall be carried out according to the ASTMA37 method. 5.2.2 Impact test specimens shall be in accordance with the provisions of the Charpy V-type test specimen in ASTMA37. The radial impact test specimen shall be the upper rate of the notch of the test bar. 5.2.3 Sampling location and test quantity shall be determined according to the following if there are no special requirements. 5.2.3.1 Horizontal test
The supplier and the buyer shall take 2 tensile test and 1 impact test bar at each end of the braided part. Forgings with a center hole shall take the test piece at 1/2 of the entire length, and forgings without a center hole shall take the test piece at 1 diameter from the surface. 5.2.3.2 The test specimens shall be cut from the two ends of the shaft as close to the body surface as possible. The supplier shall cut the ring at the other end and take a tensile test specimen and 2 impact test specimens. They shall be cut from the same point of the test ring for initial alignment. 5.2.3.3 In the test direction, 4 points shall be taken on the 1-lift line parallel to the axial cable in the radial direction; the distance between the two ends of the support shall be less than 2m, and the hole mark and hole detection after the coil shall comply with the requirements of the order drawing. 2 tensile test specimens (1 for each position) shall be taken at the same position, and 1 tensile test specimen shall be taken from the adjacent positions respectively! 1. Specimens for measuring brittle transition degree: 1. The material shall be tested by reverse support, i.e. 2 controlled extension tests, 1 push test, 1 impact test at room temperature and 1 test for measuring late temperature transition rate shall be taken from each part. 2. The impact test specimens for measuring brittle transition degree shall be carried out under the degree specified in Table 3. Both types shall show at least 5 single fracture surfaces. 3. The longitudinal tensile test may adopt a test piece with a diameter not exceeding 5mm, and the radial test shall adopt type 2: 5.2.3.4 Self-hole test piece. 5.3 Residual stress test
5.3.1 Deep cutting ring or ring resistance point to determine residual stress 5.3.2 Supply and demand double-sided 25mm×23mm1m ring at one end of the shaft body by measuring the maximum deformation of the ring before the production of the method to calculate the residual stress, the calculation formula is:
--residual stress.MPu;
--direct increment of the value of the dispersion, mm:
before cutting the ring + mm!
: elastic mold plate of the core material.MPa.
5.3.3 Residual stress should be small when unqualified, the forging can be supplemented with tempering, the temperature change should be lower than the last tempering temperature of the piece 20~ product, the residual stress after tempering inspection station results meet the provisions of 4. 5.4 Performance measurement
Forging performance measurement of the required piece shall be carried out according to ASMA341 method unless otherwise specified by the purchaser. A flat magnetic performance specimen shall be collected on the tangential test ring of the shaft body. The size shall be determined according to the equipment of each factory. 5.5 Quality measurement
On the surface of the rail body, the sample can be tested by GB62S4 method. 5.6 Yuan report inspection
5.6.1 Acid cleaning is carried out according to the order specification.
5.6.1.1 According to the parts of the order specification, 2 tables can be left after semi-fine marking. The surface standard value is 0.8 and then pickling is avoided.
5.6.1.2 According to ASTMER81 force method: 5.61.3 If the belt party requires micro powder inspection, the ASTMA>75/A275M method should be used. 5.6.2 Ultrasonic deep flaw inspection is carried out according to J15 method. After the air is filled, the equivalent direct damage signal less than 2 μm is the average drop signal of the equivalent diameter not less than 1.6 μm. 5.6 3. Check the center square hole surface relative to the center square hole surface, and judge the situation by 1. Sm film, the age instrument or magnetic age instrument only takes the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test result of the test point is not qualified. 5.7.2 If the test result of any sample cavity is unqualified, the two adjacent test results shall be retested, and the test results of the two samples shall meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier may re-treat the sensitive cattle. Note: The number of reheat treatments including each folding and refractory treatment shall not exceed two times. The newly heat treated equipment shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall provide the inspection product for the unnecessary case so that the purchaser can only conduct inspection. The purchaser's inspector shall not cause unnecessary interference to the supplier's production. Except for the specified conditions, the inspection of the 62-carrying parts shall be carried out in the supply. The supplier's quality inspection shall be carried out in accordance with this standard. The purchaser may conduct inspection according to this standard. 6.3 Step 6.3 The supplier shall provide a reasonable certificate, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging cable number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 61 Forgings shall be processed in accordance with the dimensions and surface specifications of the delivery drawings. 4.8.2 The center hole depth reading error is not allowed to exceed 1.0 mm. The center hole surface depth is 1.0 mm: the center hole joint should be limited to avoid slippage. The center hole joint error should not exceed 1.0 mm. The center hole axis connection tolerance is 1.0 mm/m.
5 Inspection rules and test methods
5. Chemical analysis
5.1.1 Refining analysis
5.1.1.1 Samples should be taken for smelting analysis at each furnace cycle and the analysis results should be reported. Weight analysis results should also be reported.
5.1.1.2 If the sample is not analyzed for shrinkage, the supplier can remove the appropriate sample from the peak or sensitive part surface, and report the analysis results and sampling location to the customer.
5.1.2 The fastest analysis
For each forging, the sample is taken from the radial test specimen of the forging performance, or the white sharp radial test specimen.
5.1.3 Gas analysis
The radial test specimen is analyzed for negative content,
5.1.4 Analysis method
The same method is used for the analysis,
5.2 Small piece performance test
5.2. After the performance is hot-blocked, it is carried out according to the ASTMA37 method. 5.2.2 The impact specimen is in accordance with the provisions of the Charpy V-type test specimen in ASTMA37, and the radial impact test bar has a notch rate of 1. 5.2.3 Sampling location and test quantity, if no special requirements, shall be determined as follows. 5.2.3.1 Horizontal test
The supplier and the buyer shall take 2 tensile test and 1 impact test bar at each end of the braided part. Forgings with a center hole shall take the test piece at 1/2 of the entire length, and forgings without a center hole shall take the test piece at 1 diameter from the surface. 5.2.3.2 The tangential test specimens shall be cut from the two ends of the shaft as close to the body surface as possible. The supplier shall cut a ring with a poor quality, and the buyer shall cut a ring at the other end and take a tensile test specimen and 2 impact samples, and cut them at the same point of the test ring for initial alignment. 5.2.3.3 In the test direction, 4 points shall be taken on the 1-lift line parallel to the axial cable in the radial direction; the distance between the two ends of the support shall be less than 2m, and the hole mark and hole detection after the coil shall comply with the requirements of the order drawing. 2 tensile test specimens (1 for each position) shall be taken at the same position, and 1 tensile test specimen shall be taken from the adjacent positions respectively! 1. Specimens for measuring brittle transition degree: 1. The material shall be tested by reverse support, i.e. 2 controlled extension tests, 1 push test, 1 impact test at room temperature and 1 test for measuring late temperature transition rate shall be taken from each part. 2. The impact test specimens for measuring brittle transition degree shall be carried out under the degree specified in Table 3. Both types shall show at least 5 single fracture surfaces. 3. The longitudinal tensile test may adopt a test piece with a diameter not exceeding 5mm, and the radial test shall adopt type 2: 5.2.3.4 Self-hole test piece. 5.3 Residual stress test
5.3.1 Deep cutting ring or ring resistance point to determine residual stress 5.3.2 Supply and demand double-sided 25mm×23mm1m ring at one end of the shaft body by measuring the maximum deformation of the ring before the production of the method to calculate the residual stress, the calculation formula is:
--residual stress.MPu;
--direct increment of the value of the dispersion, mm:
before cutting the ring + mm!
: elastic mold plate of the core material.MPa.
5.3.3 Residual stress should be small when unqualified, the forging can be supplemented with tempering, the temperature change should be lower than the last tempering temperature of the piece 20~ product, the residual stress after tempering inspection station results meet the provisions of 4. 5.4 Performance measurement
Forging performance measurement of the required piece shall be carried out according to ASMA341 method unless otherwise specified by the purchaser. A flat magnetic performance specimen shall be collected on the tangential test ring of the shaft body. The size shall be determined according to the equipment of each factory. 5.5 Quality measurement
On the surface of the rail body, the sample can be tested by GB62S4 method. 5.6 Yuan report inspection
5.6.1 Acid cleaning is carried out according to the order specification.
5.6.1.1 According to the parts of the order specification, 2 tables can be left after semi-fine marking. The surface standard value is 0.8 and then pickling is avoided.
5.6.1.2 According to ASTMER81 force method: 5.61.3 If the belt party requires micro powder inspection, the ASTMA>75/A275M method should be used. 5.6.2 Ultrasonic deep flaw inspection is carried out according to J15 method. After the air is filled, the equivalent direct damage signal less than 2 μm is the average drop signal of the equivalent diameter not less than 1.6 μm. 5.6 3. Check the center square hole surface relative to the center square hole surface, and judge the situation by 1. Sm film, the age instrument or magnetic age instrument only takes the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test result of the test point is not qualified. 5.7.2 If the test result of any sample cavity is unqualified, the two adjacent test results shall be retested, and the test results of the two samples shall meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier may re-treat the sensitive cattle. Note: The number of reheat treatments including each folding and refractory treatment shall not exceed two times. The newly heat treated equipment shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall provide the inspection product for the unnecessary case so that the purchaser can only conduct inspection. The purchaser's inspector shall not cause unnecessary interference to the supplier's production. Except for the specified conditions, the inspection of the 62-carrying parts shall be carried out in the supply. The supplier's quality inspection shall be carried out in accordance with this standard. The purchaser may conduct inspection according to this standard. 6.3 Step 6.3 The supplier shall provide a reasonable certificate, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging cable number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 61 Forgings shall be processed in accordance with the dimensions and surface specifications of the delivery drawings. 4.8.2 The center hole depth reading error is not allowed to exceed 1.0 mm. The center hole surface depth is 1.0 mm: the center hole joint should be limited to avoid slippage. The center hole joint error should not exceed 1.0 mm. The center hole axis connection depth tolerance is 1.0 mm/m.
5 Inspection rules and test methods
5. Chemical analysis
5.1.1 Refining analysis
5.1.1.1 Samples should be taken for smelting analysis at each furnace cycle and the analysis results should be reported. The weight analysis results should also be reported.
5.1.1.2 If the sample is not analyzed for shrinkage, the supplier can replace the sample with a suitable position from the peak or sensitive part surface, and report the analysis results and sampling position directly to the customer.
5.1.2 The fastest analysis
For each forging, the sample is taken from the radial test specimen of the forging performance, or the white sharp radial test specimen.
5.1.3 Gas analysis
The radial test specimen is analyzed for negative content,
5.1.4 Analysis method
The same method is used for the analysis,
5.2 Small piece performance test
5.2. After the performance is hot-blocked, it is carried out according to the ASTMA37 method. 5.2.2 The impact specimen is in accordance with the provisions of the Charpy V-type test specimen in ASTMA37, and the radial impact test bar has a notch rate of 1. 5.2.3 Sampling location and test quantity, if no special requirements, shall be determined as follows. 5.2.3.1 Horizontal test
The supplier and the buyer shall take 2 tensile test and 1 impact test bar at each end of the braided part. Forgings with a center hole shall take the test piece at 1/2 of the entire length, and forgings without a center hole shall take the test piece at 1 diameter from the surface. 5.2.3.2 The tangential test specimens shall be cut from the two ends of the shaft as close to the body surface as possible. The supplier shall cut a ring with a poor quality, and the buyer shall cut a ring at the other end and take a tensile test specimen and 2 impact samples, and cut them at the same point of the test ring for initial alignment. 5.2.3.3 In the test direction, 4 points shall be taken on the 1-lift line parallel to the axial cable in the radial direction; the distance between the two ends of the support shall be less than 2m, and the hole mark and hole detection after the coil shall comply with the requirements of the order drawing. 2 tensile test specimens (1 for each position) shall be taken at the same position, and 1 tensile test specimen shall be taken from the adjacent positions respectively! 1. Specimens for measuring brittle transition degree: 1. The material shall be tested by reverse support, i.e. 2 controlled extension tests, 1 push test, 1 impact test at room temperature and 1 test for measuring late temperature transition rate shall be taken from each part. 2. The impact test specimens for measuring brittle transition degree shall be carried out under the degree specified in Table 3. Both types shall show at least 5 single fracture surfaces. 3. The longitudinal tensile test may adopt a test piece with a diameter not exceeding 5mm, and the radial test shall adopt type 2: 5.2.3.4 Self-hole test piece. 5.3 Residual stress test
5.3.1 Deep cutting ring or ring resistance point to determine residual stress 5.3.2 Supply and demand double-sided 25mm×23mm1m ring at one end of the shaft body by measuring the maximum deformation of the ring before the production of the method to calculate the residual stress, the calculation formula is:
--residual stress.MPu;
--direct increment of the value of the dispersion, mm:
before cutting the ring + mm!
: elastic mold plate of the core material.MPa.
5.3.3 Residual stress should be small when unqualified, the forging can be supplemented with tempering, the temperature change should be lower than the last tempering temperature of the piece 20~ product, the residual stress after tempering inspection station results meet the provisions of 4. 5.4 Performance measurement
Forging performance measurement of the required piece shall be carried out according to ASMA341 method unless otherwise specified by the purchaser. A flat magnetic performance specimen shall be collected on the tangential test ring of the shaft body. The size shall be determined according to the equipment of each factory. 5.5 Quality measurement
On the surface of the rail body, the sample can be tested by GB62S4 method. 5.6 Yuan report inspection
5.6.1 Acid cleaning is carried out according to the order specification.
5.6.1.1 According to the parts of the order specification, 2 tables can be left after semi-fine marking. The surface standard value is 0.8 and then pickling is avoided.
5.6.1.2 According to ASTMER81 force method: 5.61.3 If the belt party requires micro powder inspection, the ASTMA>75/A275M method should be used. 5.6.2 Ultrasonic deep flaw inspection is carried out according to J15 method. After the air is filled, the equivalent direct damage signal less than 2 μm is the average drop signal of the equivalent diameter not less than 1.6 μm. 5.6 3. Check the center square hole surface relative to the center square hole surface, and judge the situation by 1. Sm film, the age instrument or magnetic age instrument only takes the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test result of the test point is not qualified. 5.7.2 If the test result of any sample cavity is unqualified, the two adjacent test results shall be retested, and the test results of the two samples shall meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier may re-treat the sensitive cattle. Note: The number of reheat treatments including each folding and refractory treatment shall not exceed two times. The newly heat treated equipment shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall provide the inspection product for the unnecessary case so that the purchaser can only conduct inspection. The purchaser's inspector shall not cause unnecessary interference to the supplier's production. Except for the specified conditions, the inspection of the 62-carrying parts shall be carried out in the supply. The supplier's quality inspection shall be carried out in accordance with this standard. The purchaser may conduct inspection according to this standard. 6.3 Step 6.3 The supplier shall provide a reasonable certificate, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging cable number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 61. 1. 2. 2. 3. 4. 5.2.3.2. The test specimens shall be cut from the two ends of the shaft as close to the surface as possible. The supplier shall cut the ring at the other end and take a tensile test and two impact test specimens. The test specimens shall be cut from the same point of the test ring for the initial alignment. 5.2.3.3 In the test direction, 4 points shall be taken on the 1-lift line parallel to the axial cable in the radial direction; the distance between the two ends of the support shall be less than 2m, and the hole mark and hole detection after the coil shall comply with the requirements of the order drawing. 2 tensile test specimens (1 for each position) shall be taken at the same position, and 1 tensile test specimen shall be taken from the adjacent positions respectively! 1.2 Test specimens for measuring brittle transition degree: 1. The material shall be tested by reverse support, i.e. 2 controlled extension tests, 1 push test, 1 impact test at room temperature and 1 test for measuring late temperature transition rate shall be taken from each part. 2. The impact test specimens for measuring brittle transition degree shall be carried out under the degree specified in Table 3. Both types shall show at least 5 single fracture surfaces. 3.3.4 Self-hole test specimens shall be used for the longitudinal tensile test with a diameter not exceeding 5mm. The radial test specimens shall be used in type 2 as follows: 3.3.5 Self-hole test specimens shall be used for the longitudinal tensile test with a diameter not exceeding 5mm. 5.3 Residual stress test
5.3.1 Deep cutting ring or ring resistance point to determine residual stress 5.3.2 Supply and demand double-sided 25mm×23mm1m ring at one end of the shaft body by measuring the maximum deformation of the ring before the production of the method to calculate the residual stress, the calculation formula is:
--residual stress.MPu;
--direct increment of the value of the dispersion, mm:
before cutting the ring + mm!
: the elastic mold plate of the core material.MPa.
5.3.3 Residual stress should be small when unqualified, the forging can be supplemented with tempering, the temperature change should be lower than the last tempering temperature of the piece 20~ product, the residual stress after tempering inspection station results meet the provisions of 4. 5.4 Performance measurement
Forging performance measurement of the required piece shall be carried out according to ASMA341 method unless otherwise specified by the purchaser. A flat magnetic performance specimen shall be collected on the tangential test ring of the shaft body. The size shall be determined according to the equipment of each factory. 5.5 Quality measurement
On the surface of the rail body, the sample can be tested by GB62S4 method. 5.6 Yuan report inspection
5.6.1 Acid cleaning is carried out according to the order specification.
5.6.1.1 According to the parts of the order specification, 2 tables can be left after semi-fine marking. The surface standard value is 0.8 and then pickling is avoided.
5.6.1.2 According to ASTMER81 force method: 5.61.3 If the belt party requires micro powder inspection, the ASTMA>75/A275M method should be used. 5.6.2 Ultrasonic deep flaw inspection is carried out according to the J15 method. After the air is filled, the equivalent direct damage signal less than 2 μm is the average drop signal of the equivalent diameter not less than 1.6 μm. 5.6 3. Check the center square hole surface relative to the center square hole surface, and judge the situation by 1. Sm film, the age instrument or magnetic age instrument only takes the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the single performance test fails, the test result shall not be selected. 5.7.2 If the test result of any sample cavity fails, the two adjacent test results shall be retested, and the test results of the two samples shall meet the requirements.
5.7.3 If the retest of any item for the performance test still does not contain the qualification, the supplier may re-treat the sensitive cattle. Note: The number of reheat treatments including each folding and refractory treatment is not allowed to exceed two times. The newly heat-treated equipment shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall provide the inspection product for the unnecessary case so that the purchaser can only conduct inspection. The purchaser's inspector shall not cause unnecessary interference to the supplier's production. Except for the specified conditions, the inspection of the 62-carrying parts shall be carried out in the supply. The supplier's quality inspection shall be carried out in accordance with this standard. The purchaser may conduct inspection according to this standard. 6.3 Step 6.3 The supplier shall provide reasonable certificates, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging cable number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 61. 1. 2. 2. 3. 4. 5.2.3.2. The test specimens shall be cut from the two ends of the shaft as close to the surface as possible. The supplier shall cut the ring at the other end and take a tensile test and two impact test specimens. The test specimens shall be cut from the same point of the test ring for the initial alignment. 5.2.3.3 In the test direction, 4 points shall be taken on the 1-lift line parallel to the axial cable in the radial direction; the distance between the two ends of the support shall be less than 2m, and the hole mark and hole detection after the coil shall comply with the requirements of the order drawing. 2 tensile test specimens (1 for each position) shall be taken at the same position, and 1 tensile test specimen shall be taken from the adjacent positions respectively! 1. Specimens for measuring brittle transition degree: 1. The material shall be tested by reverse support, i.e. 2 controlled extension tests, 1 push test, 1 impact test at room temperature and 1 test for measuring late temperature transition rate shall be taken from each part. 2. The impact test specimens for measuring brittle transition degree shall be carried out under the degree specified in Table 3. Both types shall show at least 5 single fracture surfaces. 3. The longitudinal tensile test may adopt a test piece with a diameter not exceeding 5mm, and the radial test shall adopt type 2: 5.2.3.4 Self-hole test piece. 5.3 Residual stress test
5.3.1 Deep cutting ring or ring resistance point to determine residual stress 5.3.2 Supply and demand double-sided 25mm×23mm1m ring at one end of the shaft body by measuring the maximum deformation of the ring before the production of the method to calculate the residual stress, the calculation formula is:
--residual stress.MPu;
--direct increment of the value of the dispersion, mm:
before cutting the ring + mm!
: elastic mold plate of the core material.MPa.
5.3.3 Residual stress should be small when unqualified, the forging can be supplemented with tempering, the temperature change should be lower than the last tempering temperature of the piece 20~ product, the residual stress after tempering inspection station results meet the provisions of 4. 5.4 Performance measurement
Forging performance measurement of the required piece shall be carried out according to ASMA341 method unless otherwise specified by the purchaser. A flat magnetic performance specimen shall be collected on the tangential test ring of the shaft body. The size shall be determined according to the equipment of each factory. 5.5 Quality measurement
On the surface of the rail body, the sample can be tested by GB62S4 method. 5.6 Yuan report inspection
5.6.1 Acid cleaning is carried out according to the order specification.
5.6.1.1 According to the parts of the order specification, 2 tables can be left after semi-fine marking. The surface standard value is 0.8 and then pickling is avoided.
5.6.1.2 According to ASTMER81 force method: 5.61.3 If the belt party requires micro powder inspection, the ASTMA>75/A275M method should be used. 5.6.2 Ultrasonic deep flaw inspection is carried out according to J15 method. After the air is filled, the equivalent direct damage signal less than 2 μm is the average drop signal of the equivalent diameter not less than 1.6 μm. 5.6 3. Check the center square hole surface relative to the center square hole surface, and judge the situation by 1. Sm film, the age instrument or magnetic age instrument only takes the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test result of the test point is not qualified. 5.7.2 If the test result of any sample cavity is unqualified, the two adjacent test results shall be retested, and the test results of the two samples shall meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier may re-treat the sensitive cattle. Note: The number of reheat treatments including each folding and refractory treatment shall not exceed two times. The newly heat treated equipment shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall provide the inspection product for the unnecessary case so that the purchaser can only conduct inspection. The purchaser's inspector shall not cause unnecessary interference to the supplier's production. Except for the specified conditions, the inspection of the 62-carrying parts shall be carried out in the supply. The supplier's quality inspection shall be carried out in accordance with this standard. The purchaser may conduct inspection according to this standard. 6.3 Step 6.3 The supplier shall provide a reasonable certificate, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging cable number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 6Sm film, age instrument or magnetic age test only the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test results of the two adjacent samples shall be retested. The test results of the two samples must meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier can reheat the sensitive cattle. The number of reheat treatments including each folding itch is not allowed to exceed two times. The equipment that has been reheated shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall review the inspection products and make unnecessary inspections so that the purchaser can only conduct inspections. The purchaser's inspector shall not cause unnecessary obstruction to the supplier's production. Except for the specified requirements, the supplier's quality inspection shall be carried out during the supply. The acceptance shall be carried out in accordance with this standard. The purchaser may conduct friendly inspections according to this requirement. 6.3 The purchaser shall provide reasonable certification, including the following: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if any unacceptable defects are found during the inspection and processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve the problem.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 6Sm film, age instrument or magnetic age test only the inner hole surface. Deep powder inspection shall be carried out according to ASTM4275/A275M method 5. Retest and other new point treatment
JIB/T 870A1998
5.7.1 The single performance test result does not meet the requirements. When the result of the test is unqualified, the test results of the two adjacent samples shall be retested. The test results of the two samples must meet the requirements.
5.7.3 If the retest of any item for the performance test is still not qualified, the supplier can reheat the sensitive cattle. The number of reheat treatments including each folding itch is not allowed to exceed two times. The equipment that has been reheated shall be inspected according to the provisions of 5.2. 6 Acceptance and certificate of conformity
Issuance! The supplier shall review the inspection products and make unnecessary inspections so that the purchaser can only conduct inspections. The purchaser's inspector shall not cause unnecessary obstruction to the supplier's production. Except for the specified requirements, the supplier's quality inspection shall be carried out during the supply. The acceptance shall be carried out in accordance with this standard. The purchaser may conduct friendly inspections according to this requirement. 6.3 The purchaser shall provide reasonable certification, including a list of contents: a) Company number:
b: General part drawing number, valve number;
r: Standard and forging number:
d) Olefin number, sensitive part card number:
) Melt analysis and rubber product analysis results:
1) Mechanical properties tensile test Results:
) The general inspection results, including defects according to this section: the pressure temperature and the quenching temperature and the cooling method: 12 The inspection results of the requirements are as follows,
6.4 After the acceptance of the parts by the purchaser, if the defects are found in the inspection and during the processing, the purchaser shall promptly inform the supplier and the two parties shall negotiate to solve them.
The marking and packaging requirements are as follows. 1 The party shall mark the party’s factory name or logo, contract number, end mark number and part number on the lower surface of each forging. 2 The center hole of each forging shall be removed and blocked with the end chain to avoid damage and corrosion during transportation and promotion. 6
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