Some standard content:
National Standard of the People's Republic of China
Forged heat-resisting superalloy disks
GB/T14997-94
Easy Standard Nanny
National Standard of the People's Republic of China
Forged heat-resisting superalloy disks
Forged heat-resisting superalloy disks GB/T14997-94
Replaces GBn18182
This standard applies to forged heat-resisting superalloy disks (hereinafter referred to as disks) with a diameter not exceeding 600 mm and a height within the range of 60 to 150 mm. They can be used to manufacture die forgings such as turbine disks for aviation and other industries. 1 Appearance, size, weight
1.1 Appearance
The disks should be round and drum-shaped, without obvious distortion or double drum shape. The degree of non-roundness shall be indicated in the contract. 1.2 Dimensions, weights and their allowable deviations
The dimensions, weights and their allowable deviations of round cakes shall not exceed those specified in Table 1. Table 1
Weight of round cakes, kg
61~ 90
91~150
151~250
Allowable deviation of outer diameter, mm
Allowable deviation of height, mm
1.3 Round cakes with dimensions, shapes and weights other than those specified in this standard may be provided upon consultation between the supplier and the buyer. 2 Technical requirements
2.1 Alloy grades and chemical composition
2.1.1 The alloy grades and chemical composition (melting analysis) shall comply with the provisions of Table 2. Approved by the State Bureau of Technical Supervision on April 4, 1994, the allowable deviation of weight, kg
Implemented on May 1, 1994
New grade
GH2036
GH2132
GH2135
GH2136
GH4033
GH4133
New grade
GH2036Www.bzxZ.net
GH2132
GH2135||t t||GH2136
GH4033
GH4133
Original grade
Original grade
GB/T14997-94
<0.035<0.030
<1.00<0.030<0.020
<0.40<0.50<0.020<0.020
<0.01<0.35
*B and Ce of alloy are added according to the calculated amount.
<0.75/<0.025
<0.65<0.015<0.007
<0.65<0.015<0.007||tt ||<0.07<0.001
<0.07<0.001
~0,001
<0.0012<0.0025<0.001< 0.0025
<0.0025<0.001<0.0025
GB/T14997-94
2.1.1.1 Composition of GH2135 alloy, if the Si content is greater than 0.5~0.6%, it can also be delivered, but at this time, the instantaneous mechanical properties and impact toughness tests at 400℃ and 700℃ must be carried out, and the indicators should meet the requirements of Table 3. Table 3
Test temperature
Tensile strength
kgf/mm2
Elongation
Shrinkage
Impact value
kgf.m/cm2
2.1.1.2 When the upper limit of Ti content of GH4033 alloy is not greater than 2.90%, delivery is allowed with the consent of the purchaser. Except for the aerospace and aviation sectors, the Fe content is not more than 4.0% and can be delivered. 2.1.2 According to the special requirements of the purchaser and the agreement between the supply and demand parties, the alloy with a stricter composition range than that specified in Table 2 can be supplied, and stricter regulations can be made for trace impurity elements such as Bi, Sn, Sb, Pb, As, etc. 2.1.3 Permissible deviation of chemical composition of finished products
When the finished product is chemically analyzed (when the purchaser conducts inspection or the purchaser requires the supplier to inspect the chemical composition of the finished round cake), the chemical composition of GH2135 and GH2036 alloy round cakes is allowed to deviate from the provisions of Table 2: GH2135W: ±0.10%, Mo: ±0.10%, Ti: ±0.10%; GH2036 when other requirements meet the provisions of this standard, if there is a deviation in its chemical composition, the purchaser's consent must be obtained before delivery.
With the consent of the purchaser, the chemical composition of the finished product is allowed to have a deviation of no more than 2.1.4
as specified in Table 4 of GB/T14992 "High Temperature Alloy Grades".
2.2 Manufacturing method
2.2.1 Refining method
The alloy shall be produced by the smelting method approved by the competent authorities of both the supply and demand parties, and shall be indicated in the quality certificate. Other smelting methods that meet the requirements of this standard may also be used after consultation between the supply and demand parties. 2.2.2 Processing method
The round cake is forged by a forging hammer or a hydraulic press. The total deformation ratio shall not be less than 6 (the rough ratio of GH2036 alloy shall not be less than 2.2). 2.3 Delivery status
2.3.1 The round cake is delivered without heat treatment.
2.3.2 Generally, it is delivered without polishing. According to the requirements of the purchaser, it can be delivered in a polished state. 2.4 Mechanical properties
2.4.1 The room temperature and high temperature mechanical properties of the round cakes are measured with heat-treated samples. The heat treatment system, room temperature and high temperature mechanical properties of the samples shall comply with the requirements of Table 4.
GB/T1499794
0°80T
2.00 086
w/xw//8
GB/T14997—94
2.4.1.1 The solution treatment of GH2036 alloy at 1130℃ is only suitable for the electric furnace + electroslag process. 2.4.1.2 When the C content of GH2036 alloy is not more than 0.36%, it is recommended that the second stage aging be carried out at 770~780℃, and when the C content is greater than 0.36%, it is carried out at 790~800℃. 2.4.2 The accuracy of heat treatment temperature control is ±7℃ for GH2036 alloy and ±10℃ for other grades. 2.4.3 For GH2036, GH2135, GH4033 and GH4133 alloys, it is allowed to repeat the heat treatment once completely, and repeated aging is not counted as the number of repeated heat treatments.
2.4.4 For GH2036 alloy, supplementary aging is allowed at 790～810℃, and the holding time is not less than 5 hours; for GH4033 alloy, supplementary aging is allowed at 700℃, and the holding time should reach the required hardness value. The supplementary aging process is indicated in the quality certificate. 2.4.5 For GH2036, GH2135, GH2136, GH4033 and GH4133 alloys, when their endurance performance is unqualified, they can be retested according to the data in brackets in Table 4, and the number of samples will not be doubled. If they fail again, the data in brackets will be handled according to the re-inspection regulations.
2.4.6 If the mechanical property test fails due to improper forging process, a chordal specimen can be taken from a round cake for inspection. For GH4033 and GH2135 alloys, the room temperature tensile test shall be in accordance with the data with "*" in Table 4. The properties of other alloys are the same as those of the fusion test specimen; or the round cake can be forged into a fusion test specimen for inspection, and the results shall be in accordance with the provisions without "*" in Table 4. 2.4.7 Other performance test items may be added according to the special requirements of the purchaser. The specific requirements shall be determined by negotiation between the supply and demand parties and shall be indicated in the contract.
2.5 Macro inspection
2.5.1 When inspecting the transverse macrostructure on the acid-leached fusion test specimen, there shall be no shrinkage marks, voids, pinholes and inclusions (including foreign metal slag) visible to the naked eye.
2.5.2 The evaluation methods and standards for porosity, segregation and coarse grains shall be determined by negotiation between the supply and demand parties. 2.6 Inclusion Inspection
2.6.1 Inspect the inclusions in the alloy on the melt inspection sample and provide the measured data. 2.6.2 The rating method and evaluation pictures of inclusions shall be determined by negotiation between the two parties. 2.7 Ultrasonic flaw detection
The round cakes shall be subjected to ultrasonic flaw detection one by one, and the standard shall be determined by negotiation between the supply and demand parties. 2.8 Surface Quality
2.8.1 Cracks, slag inclusions, scars and folds are not allowed on the surface of the round cakes. 2.8.2 Local defects on the end surface of the round cakes can be polished away, and the polishing depth shall not exceed 5.mm, the sum of the grinding depths of the symmetrical end faces shall not exceed 7mm. The ratio of grinding width to depth shall not be less than 6. The grinding depth of defects on the side of the round cake shall not exceed 8mm, and the ratio of width to depth shall not be less than 8.
3 Inspection methods
3.1 Dimension measurement method
The round cakes shall be inspected for size piece by piece with universal measuring tools. 3.2 Weight measurement method
The round cakes shall be inspected for weight piece by piece with universal weighing tools. 3.3 Surface quality inspection method
The surface quality of the round cakes shall be inspected piece by piece with the naked eye. 3.4 Chemical analysis method
3.4.1 Chemical analysis sampling method of alloys According to the relevant provisions of GB222-63 "Sample collection method for chemical analysis of steel", one sample shall be taken from each furnace. For the alloys finally produced by electroslag or vacuum consumable furnaces, the elements of C, AI and Ti shall be sampled and analyzed from the head and tail of the ingot, and other specified analysis elements shall be sampled and analyzed only from the head of the ingot. 3.4.2 The chemical analysis of alloys can be carried out according to the general method, but the arbitration analysis should be carried out according to YB790-75 "Chemical Analysis Method for High-temperature Alloys". When the purchaser verifies the analysis, it can be carried out according to other commonly used methods. 5
3.5 Ultrasonic flaw detection method
GB/T14997-94
The ultrasonic flaw detection of round cakes should be carried out according to GB1786-79 "Ultrasonic flaw detection method for forged round cakes". 3.6 Macrostructure inspection method
The horizontal macrostructure inspection of round cakes should be carried out according to GB/T14999.2 "High-temperature alloy horizontal macrostructure acid leaching test method". For each batch of round cakes, two horizontal specimens are taken from the 90 square melting inspection specimen at the equivalent of the ingot head (one specimen is taken from each sub-furnace number after electroslag remelting). 3.7 Mechanical properties test method
3.7.1 Sampling location
The sample for mechanical properties test shall be cut from the 90 square melting test sample equivalent to the ingot head at 1/4 of the diagonal of the cross section.
The sampling quantity and test method shall comply with the provisions of Table 5. However, other commonly used test methods may be used for high temperature tensile and high temperature endurance performance tests.
Test items
Room temperature tensile test
High temperature tensile test
Room temperature impact test
High temperature endurance test
Brinell hardness test
4 Inspection rules
4.1 Acceptance
Number of samples, pieces
Test method
GB228—76
YB941-78
GB229—63
YB899-77
GB231—63
The acceptance of round cakes shall be carried out by the technical supervision department of the supplier. The purchaser has the right to inspect the round cakes according to the provisions of this standard. 4.2 Batches
The round cakes shall be submitted for acceptance in batches. Each batch shall consist of round cakes of the same alloy grade, the same furnace number and the same specification. 4.2.24
The minimum quantity of each batch of round cakes shall be specified in the contract. 4.2.3
Round cakes produced by dual processes such as electroslag and vacuum consumable furnace remelting may be batched according to the mother furnace number after negotiation between the supply and demand parties. 4.2.4 Two 90×90×200mm long test samples shall be submitted to the demander with each batch of round cakes upon delivery for inspection by the demander. 4.3 Re-test
4.3.1 Mechanical properties If any test result does not meet the standard requirements, double the number of samples shall be taken from the original sample to re-test the unqualified item. If even one of the re-test results (including any index required by the test) fails, the entire batch shall be scrapped.
4.3.2 When the supplier finds that the horizontal macrostructure is unqualified on the alloy melting test sample, the supplier can check on the first round cake of the ingot for single refining. If it is still unqualified, in addition to scrapping the unqualified round cake (the round cake at the corresponding position of the ingot plate should be scrapped for the lower ingot), the first round cake at the head of all ingots and the unqualified adjacent round cakes should also be inspected. If it is still unqualified, the whole furnace will be scrapped, but it is allowed to be inspected one by one. Those that are qualified can be re-batch and submitted for acceptance.
4.8.3 For alloys smelted by electroslag and consumable furnaces, when the supplier finds that the horizontal macrostructure is unqualified on the melting test sample, the supplier can check on the adjacent round cakes. If it is still unqualified, the whole furnace will be scrapped. However, it is allowed to inspect the round cakes one by one. If the qualified number is not less than the minimum number specified in the contract, it can be re-batch and submitted for acceptance. 4.3.4 When the buyer finds that the horizontal macrostructure is unqualified on the melting test sample, it is generally not re-tested. The supplier is allowed to re-test some regularly distributed macro defects (such as residual shrinkage, coarse looseness, hot working cracks, etc.) if there is a technical basis and the product quality can be ensured. If the re-test still fails, the batch of round cakes should be scrapped. However, the supplier is allowed to conduct a horizontal macro inspection of the round cakes according to the location and sequence of the defects in the ingot, or to inspect the whole batch of round cakes one by one, and re-batch and submit for acceptance. 4.3.5 When the round cakes produced by the double-link process are batched according to the mother furnace number, if the buyer fails the re-test, the supplier is allowed to scrap the unqualified sub-furnace number, and inspect the remaining sub-furnace numbers one by one. With the consent of the buyer, they can be re-submitted for acceptance according to the mother furnace number, and the quantity should not be less than the minimum quantity specified in the contract. 4.3.6 With the consent of the buyer, the supplier can re-batch the batch of furnaces that failed the re-test at the buyer's place. 4.4 Quality objection
After receiving the materials from the supplier, the purchaser shall inspect the materials as soon as possible according to the provisions of this standard. If the materials do not meet the requirements of this standard during the inspection, the supplier shall immediately report it to the supplier. When the supplier receives the quality objection from the purchaser, it shall also negotiate with the purchaser in a timely manner. 4.5 Arbitration test
When the supply and demand parties disagree on a certain test result (including chemical analysis), they may request an arbitration unit designated by the superior competent department or agreed upon by both parties to conduct an arbitration test. The arbitration test methods for high-temperature stretching and high-temperature endurance shall be determined by the arbitration unit. 4.6 Handling of metallurgical defects
When the purchaser finds metallurgical defects on finished or semi-finished parts and the defects are confirmed by both parties, the supplier shall return the goods and make up for them when the purchaser requires.
5 Packaging, marking and quality certificate
5.1 The round cakes shall be marked with the alloy grade, furnace number and ingot section number one by one. 5.2 Each batch of round cakes shall be accompanied by a quality certificate, which shall include the supplier's name, buyer's name, contract number, standard number, alloy grade, smelting method, furnace number (including master furnace number and sub-furnace number), specifications, quantity, weight (including single piece weight), delivery date and various inspection results specified in this standard and the contract and agreement (if re-inspection is carried out, the results of two inspections shall be included), and shall be stamped with the seal of the technical supervision department.
5.3 In addition to the requirements specified in this standard, if there are other requirements for packaging, marking and quality certificates, they shall be determined by negotiation between the supplier and the buyer. Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by Changcheng Steel Plant.
The main drafters of this standard are Zhang Shuhui, Wang Liyun and Liu Ye. This standard is entrusted to the Standardization Research Institute of the Ministry of Metallurgical Industry for interpretation.1 Sampling location
The specimens for mechanical property test shall be cut from the 90 square melting test specimen equivalent to the ingot head at 1/4 of the diagonal distance from the top corner along the cross section.
The sampling quantity and test method shall comply with the provisions of Table 5. However, other commonly used test methods may be used for high temperature tensile and high temperature endurance performance tests.
Test items
Room temperature tensile test
High temperature tensile test
Room temperature impact test
High temperature endurance test
Brinell hardness test
4 Inspection rules
4.1 Acceptance
Number of samples, pieces
Test method
GB228—76
YB941-78
GB229—63
YB899-77
GB231—63
The acceptance of round cakes shall be carried out by the technical supervision department of the supplier. The purchaser has the right to inspect the round cakes according to the provisions of this standard. 4.2 Batches
The round cakes shall be submitted for acceptance in batches. Each batch shall consist of round cakes of the same alloy grade, the same furnace number and the same specification. 4.2.24
The minimum quantity of each batch of round cakes shall be specified in the contract. 4.2.3
Round cakes produced by dual processes such as electroslag and vacuum consumable furnace remelting may be batched according to the mother furnace number after negotiation between the supply and demand parties. 4.2.4 Two 90×90×200mm long test samples shall be submitted to the demander with each batch of round cakes upon delivery for inspection by the demander. 4.3 Re-test
4.3.1 Mechanical properties If any test result does not meet the standard requirements, double the number of samples shall be taken from the original sample to re-test the unqualified item. If even one of the re-test results (including any index required by the test) fails, the entire batch shall be scrapped.
4.3.2 When the supplier finds that the horizontal macrostructure is unqualified on the alloy melting test sample, the supplier can check on the first round cake of the ingot for single refining. If it is still unqualified, in addition to scrapping the unqualified round cake (the round cake at the corresponding position of the ingot plate should be scrapped for the lower ingot), the first round cake at the head of all ingots and the unqualified adjacent round cakes should also be inspected. If it is still unqualified, the whole furnace will be scrapped, but it is allowed to be inspected one by one. Those that are qualified can be re-batch and submitted for acceptance.
4.8.3 For alloys smelted by electroslag and consumable furnaces, when the supplier finds that the horizontal macrostructure is unqualified on the melting test sample, the supplier can check on the adjacent round cakes. If it is still unqualified, the whole furnace will be scrapped. However, it is allowed to inspect the round cakes one by one. If the qualified number is not less than the minimum number specified in the contract, it can be re-batch and submitted for acceptance. 4.3.4 When the buyer finds that the horizontal macrostructure is unqualified on the melting test sample, it is generally not re-tested. The supplier is allowed to re-test some regularly distributed macro defects (such as residual shrinkage, coarse looseness, hot working cracks, etc.) if there is a technical basis and the product quality can be ensured. If the re-test still fails, the batch of round cakes should be scrapped. However, the supplier is allowed to conduct a horizontal macro inspection of the round cakes according to the location and sequence of the defects in the ingot, or to inspect the whole batch of round cakes one by one, and re-batch and submit for acceptance. 4.3.5 When the round cakes produced by the double-link process are batched according to the mother furnace number, if the buyer fails the re-test, the supplier is allowed to scrap the unqualified sub-furnace number, and inspect the remaining sub-furnace numbers one by one. With the consent of the buyer, they can be re-submitted for acceptance according to the mother furnace number, and the quantity should not be less than the minimum quantity specified in the contract. 4.3.6 With the consent of the buyer, the supplier can re-batch the batch of furnaces that failed the re-test at the buyer's place. 4.4 Quality objection
After receiving the materials from the supplier, the purchaser shall inspect the materials as soon as possible according to the provisions of this standard. If the materials do not meet the requirements of this standard during the inspection, the supplier shall immediately report it to the supplier. When the supplier receives the quality objection from the purchaser, it shall also negotiate with the purchaser in a timely manner. 4.5 Arbitration test
When the supply and demand parties disagree on a certain test result (including chemical analysis), they may request an arbitration unit designated by the superior competent department or agreed upon by both parties to conduct an arbitration test. The arbitration test methods for high-temperature stretching and high-temperature endurance shall be determined by the arbitration unit. 4.6 Handling of metallurgical defects
When the purchaser finds metallurgical defects on finished or semi-finished parts and the defects are confirmed by both parties, the supplier shall return the goods and make up for them when the purchaser requires.
5 Packaging, marking and quality certificate
5.1 The round cakes shall be marked with the alloy grade, furnace number and ingot section number one by one. 5.2 Each batch of round cakes shall be accompanied by a quality certificate, which shall include the supplier's name, buyer's name, contract number, standard number, alloy grade, smelting method, furnace number (including master furnace number and sub-furnace number), specifications, quantity, weight (including single piece weight), delivery date and various inspection results specified in this standard and the contract and agreement (if re-inspection is carried out, the results of two inspections shall be included), and shall be stamped with the seal of the technical supervision department.
5.3 In addition to the requirements specified in this standard, if there are other requirements for packaging, marking and quality certificates, they shall be determined by negotiation between the supplier and the buyer. Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by Changcheng Steel Plant.
The main drafters of this standard are Zhang Shuhui, Wang Liyun and Liu Ye. This standard is entrusted to the Standardization Research Institute of the Ministry of Metallurgical Industry for interpretation.1 Sampling location
The specimens for mechanical property test shall be cut from the 90 square melting test specimen equivalent to the ingot head at 1/4 of the diagonal distance from the top corner along the cross section.
The sampling quantity and test method shall comply with the provisions of Table 5. However, other commonly used test methods may be used for high temperature tensile and high temperature endurance performance tests.
Test items
Room temperature tensile test
High temperature tensile test
Room temperature impact test
High temperature endurance test
Brinell hardness test
4 Inspection rules
4.1 Acceptance
Number of samples, pieces
Test method
GB228—76
YB941-78
GB229—63
YB899-77
GB231—63
The acceptance of round cakes shall be carried out by the technical supervision department of the supplier. The purchaser has the right to inspect the round cakes according to the provisions of this standard. 4.2 Batches
The round cakes shall be submitted for acceptance in batches. Each batch shall consist of round cakes of the same alloy grade, the same furnace number and the same specification. 4.2.24
The minimum quantity of each batch of round cakes shall be specified in the contract. 4.2.3
Round cakes produced by dual processes such as electroslag and vacuum consumable furnace remelting may be batched according to the mother furnace number after negotiation between the supply and demand parties. 4.2.4 Two 90×90×200mm long test samples shall be submitted to the demander with each batch of round cakes upon delivery for inspection by the demander. 4.3 Re-test
4.3.1 Mechanical properties If any test result does not meet the standard requirements, double the number of samples shall be taken from the original sample to re-test the unqualified item. If even one of the re-test results (including any index required by the test) fails, the entire batch shall be scrapped.
4.3.2 When the supplier finds that the horizontal macrostructure is unqualified on the alloy melting test sample, the supplier can check on the first round cake of the ingot for single refining. If it is still unqualified, in addition to scrapping the unqualified round cake (the round cake at the corresponding position of the ingot plate should be scrapped for the lower ingot), the first round cake at the head of all ingots and the unqualified adjacent round cakes should also be inspected. If it is still unqualified, the whole furnace will be scrapped, but it is allowed to be inspected one by one. Those that are qualified can be re-batch and submitted for acceptance.
4.8.3 For alloys smelted by electroslag and consumable furnaces, when the supplier finds that the horizontal macrostructure is unqualified on the melting test sample, the supplier can check on the adjacent round cakes. If it is still unqualified, the whole furnace will be scrapped. However, it is allowed to inspect the round cakes one by one. If the qualified number is not less than the minimum number specified in the contract, it can be re-batch and submitted for acceptance. 4.3.4 When the buyer finds that the horizontal macrostructure is unqualified on the melting test sample, it is generally not re-tested. The supplier is allowed to re-test some regularly distributed macro defects (such as residual shrinkage, coarse looseness, hot working cracks, etc.) if there is a technical basis and the product quality can be ensured. If the re-test still fails, the batch of round cakes should be scrapped. However, the supplier is allowed to conduct a horizontal macro inspection of the round cakes according to the location and sequence of the defects in the ingot, or to inspect the whole batch of round cakes one by one, and re-batch and submit for acceptance. 4.3.5 When the round cakes produced by the double-link process are batched according to the mother furnace number, if the buyer fails the re-test, the supplier is allowed to scrap the unqualified sub-furnace number, and inspect the remaining sub-furnace numbers one by one. With the consent of the buyer, they can be re-submitted for acceptance according to the mother furnace number, and the quantity should not be less than the minimum quantity specified in the contract. 4.3.6 With the consent of the buyer, the supplier can re-batch the batch of furnaces that failed the re-test at the buyer's place. 4.4 Quality objection
After receiving the materials from the supplier, the purchaser shall inspect the materials as soon as possible according to the provisions of this standard. If the materials do not meet the requirements of this standard during the inspection, the supplier shall immediately report it to the supplier. When the supplier receives the quality objection from the purchaser, it shall also negotiate with the purchaser in a timely manner. 4.5 Arbitration test
When the supply and demand parties disagree on a certain test result (including chemical analysis), they may request an arbitration unit designated by the superior competent department or agreed upon by both parties to conduct an arbitration test. The arbitration test methods for high-temperature stretching and high-temperature endurance shall be determined by the arbitration unit. 4.6 Handling of metallurgical defects
When the purchaser finds metallurgical defects on finished or semi-finished parts and the defects are confirmed by both parties, the supplier shall return the goods and make up for them when the purchaser requires.
5 Packaging, marking and quality certificate
5.1 The round cakes shall be marked with the alloy grade, furnace number and ingot section number one by one. 5.2 Each batch of round cakes shall be accompanied by a quality certificate, which shall include the supplier's name, buyer's name, contract number, standard number, alloy grade, smelting method, furnace number (including master furnace number and sub-furnace number), specifications, quantity, weight (including single piece weight), delivery date and various inspection results specified in this standard and the contract and agreement (if re-inspection is carried out, the results of two inspections shall be included), and shall be stamped with the seal of the technical supervision department.
5.3 In addition to the requirements specified in this standard, if there are other requirements for packaging, marking and quality certificates, they shall be determined by negotiation between the supplier and the buyer. Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by Changcheng Steel Plant.
The main drafters of this standard are Zhang Shuhui, Wang Liyun and Liu Ye. This standard is entrusted to the Standardization Research Institute of the Ministry of Metallurgical Industry for interpretation.5 Arbitration test
When the supplier and the buyer disagree on a test result (including chemical analysis), they may request an arbitration unit designated by the superior competent department or agreed upon by both parties to conduct an arbitration test. The arbitration test methods for high-temperature tensile and high-temperature endurance shall be determined by the arbitration unit. 4.6 Treatment of metallurgical defects
When the buyer finds metallurgical defects on finished or semi-finished parts and the defects are confirmed by both parties, the supplier shall return the goods and make up for them when the buyer requests.
5 Packaging, marking and quality certificate
5.1 The round cakes shall be marked with the alloy grade, furnace number and ingot section number one by one. 5.2 Each batch of round cakes shall be accompanied by a quality certificate, which shall include the supplier's name, buyer's name, contract number, standard number, alloy grade, smelting method, furnace number (including master furnace number and sub-furnace number), specifications, quantity, weight (including single piece weight), delivery date and various inspection results specified in this standard and the contract and agreement (if re-inspection is carried out, the results of two inspections shall be included), and shall be stamped with the seal of the technical supervision department.
5.3 In addition to the requirements specified in this standard, if there are other requirements for packaging, marking and quality certificates, they shall be determined by negotiation between the supplier and the buyer. Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by Changcheng Steel Plant.
The main drafters of this standard are Zhang Shuhui, Wang Liyun and Liu Ye. This standard is entrusted to the Standardization Research Institute of the Ministry of Metallurgical Industry for interpretation.5 Arbitration test
When the supplier and the buyer disagree on a test result (including chemical analysis), they may request an arbitration unit designated by the superior competent department or agreed upon by both parties to conduct an arbitration test. The arbitration test methods for high-temperature tensile and high-temperature endurance shall be determined by the arbitration unit. 4.6 Treatment of metallurgical defects
When the buyer finds metallurgical defects on finished or semi-finished parts and the defects are confirmed by both parties, the supplier shall return the goods and make up for them when the buyer requests.
5 Packaging, marking and quality certificate
5.1 The round cakes shall be marked with the alloy grade, furnace number and ingot section number one by one. 5.2 Each batch of round cakes shall be accompanied by a quality certificate, which shall include the supplier's name, buyer's name, contract number, standard number, alloy grade, smelting method, furnace number (including master furnace number and sub-furnace number), specifications, quantity, weight (including single piece weight), delivery date and various inspection results specified in this standard and the contract and agreement (if re-inspection is carried out, the results of two inspections shall be included), and shall be stamped with the seal of the technical supervision department.
5.3 In addition to the requirements specified in this standard, if there are other requirements for packaging, marking and quality certificates, they shall be determined by negotiation between the supplier and the buyer. Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by Changcheng Steel Plant.
The main drafters of this standard are Zhang Shuhui, Wang Liyun and Liu Ye. This standard is entrusted to the Standardization Research Institute of the Ministry of Metallurgical Industry for interpretation.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.