GB/T 42537-2023 (GB/T42537-2023, GBT 42537-2023, GBT42537-2023)
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| GB/T 42537-2023 | English | 339 |
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Specification of heat treatment for super-scale steel forgings
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GB/T 42537-2023
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Standards related to: GB/T 42537-2023
| Standard ID | GB/T 42537-2023 (GB/T42537-2023) | | Description (Translated English) | Specification of heat treatment for super-scale steel forgings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J32 | | Classification of International Standard | 77.140.85 | | Word Count Estimation | 16,142 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-05-23 | | Drafting Organization | Erzhong (Deyang) Heavy Equipment Co., Ltd., China First Heavy Machinery Co., Ltd., Shanghai Electric Heavy Casting and Forging Co., Ltd., Taiyuan Heavy Industry Co., Ltd., CITIC Heavy Industry Machinery Co., Ltd. | | Administrative Organization | National Standardization Technical Committee of Large Castings and Forgings (SAC/TC 506) | | Proposing organization | China Machinery Industry Federation | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Management Committee | GB/T 42537-2023: Specification for heat treatment of extra large steel forgings
ICS 77:140:85
CCSJ32
National Standards of People's Republic of China
Specifications for heat treatment of oversized steel forgings
Released on 2023-05-23
2023-05-23 Implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
1 Range 1
2 Normative references 1
3 Terms and Definitions 1
4 Basic Requirements 1
5 heat treatment equipment 2
5:1 Heating equipment 2
5:2 Cooling equipment 2
5:3 Related tooling accessories 2
6 heat treatment process 2
6:1 Heat treatment process content 2
6:2 Rotor forging 2
6:3 Backup roll forgings 3
6:4 Container forgings 3
7 Heat treatment operation and process control 3
7:1 General requirements 3
7:2 Rotor forging 3
7:3 Backup roll forgings 4
7:4 Container forgings 4
8 Quality Control and Inspection 5
8:1 Manufacturing Outline 5
8:2 Ultrasonic testing 5
8:3 Mechanical property test 5
8:4 Testing equipment and operator requirements 5
9 Safety, health and environmental protection requirements 5
Appendix A (Informative) Chemical Composition of Commonly Used Materials for Extra Large Steel Forgings 6
Appendix B (Informative) Heat Treatment Process Parameters of Commonly Used Materials for Rotor Forgings 7
Appendix C (Informative) Heat Treatment Process Parameters of Commonly Used Materials for Extra-Large Back-up Rolls 9
Appendix D (Informative) Heat Treatment Process Parameters of Commonly Used Materials for Container Forgings 11
Reference 12
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Standardization Technical Committee for Large Castings and Forgings (SAC/TC506):
This document was drafted by: Erzhong (Deyang) Heavy Equipment Co:, Ltd:, China First Heavy Machinery Co:, Ltd:, Shanghai Electric Heavy Casting and Forging Co:, Ltd:
Co:, Ltd:, Taiyuan Heavy Industry Co:, Ltd:, CITIC Heavy Industry Machinery Co:, Ltd:
The main drafters of this document: Jiang Xinliang, Li Bo, Wang Xiaofang, Sun Lei, Qin Jiang, Chen Xianyi, Feng Jing, Xu Wenjin, Zhang Guoli, Zhang Zhifeng, Song Guowang,
Wang Xinchang, Guo Feng, Niu Yuwen, Shi Ruxing:
Specifications for heat treatment of oversized steel forgings
1 Scope
This document specifies the technical requirements and process methods for the heat treatment of extra-large steel forgings forged from steel ingots of more than 250 tons:
This document is applicable to steel ingots with a weight greater than or equal to 250t, forgings made of Ni2, Ni3, Ni4 series rotor materials, Cr2, Cr3, Cr4
A series of backup roller materials, 12Cr2Mo1, 12Cr2Mo1V container materials, 20MnNiMo nuclear power materials, etc: are typical representatives of energy, metallurgy,
Heat treatment of extra-large steel forgings for heavy equipment in petrochemical and other industries, see Appendix A for the chemical composition of commonly used materials for extra-large steel forgings, and other
Refer to this document for heat treatment of oversized forgings:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 7232 Metal Heat Treatment Process Terminology
GB/T 13324 Terminology of heat treatment equipment
GB 15735 Metal Heat Treatment Production Process Safety and Sanitation Requirements
GB/T 16924 Quenching and Tempering of Steel Parts
GB/T 27946 Limits of Hazardous Substances in the Air of Heat Treatment Workplaces
GB/T 30822 Environmental Protection Technical Requirements for Heat Treatment
GB/T 32541 Heat Treatment Quality Control System
GB/T 37559-2019 Normalizing and annealing of large steel forgings
3 Terms and Definitions
The following terms and definitions defined in GB/T 7232, GB/T 13324 and GB/T 37559-2019 apply to this document:
3:1
Super-scale steel forgings super-scale steel forgings
A single piece is a steel free forging forged from a steel ingot of more than 250t:
4 Basic requirements
4:1 The manufacturer should have a complete quality assurance system, and should have the performance of producing forgings of similar materials and sizes or have passed the review:
Experience like forging:
4:2 Process plan should be evaluated before heat treatment: The process plan includes the process method, hoisting method, process equipment used and necessary
Assistive devices, necessary technical measures, safety measures and process parameters, etc: The process plan should generally adopt mature process parameters, allowing
The actual situation is slightly adjusted:
4:3 In order to ensure the controllability of the quality of forgings, the manufacturer should have the ability to smelt, forge and heat treat extra-large steel forgings:
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