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GB/T 37435-2019: Cooling technical requirements of heat treatment
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| GB/T 37435-2019 | English | 759 |
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Cooling technical requirements of heat treatment
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GB/T 37435-2019
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Basic data | Standard ID | GB/T 37435-2019 (GB/T37435-2019) | | Description (Translated English) | Cooling technical requirements of heat treatment | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J36 | | Classification of International Standard | 25.200 | | Word Count Estimation | 38,381 | | Date of Issue | 2019-05-10 | | Date of Implementation | 2019-12-01 | | Quoted Standard | GB/T 265; GB/T 268; GB/T 511; GB/T 699; GB/T 3077; GB/T 3536; GB/T 4945; GB/T 7232; GB/T 7304; GB 8978; GB/T 11133; GB/T 11901; GB/T 13324; GB 15735; GB/T 17145; GB/T 27945.3; GB/T 27946; GB/T 30822; GB/T 30823; GB/T 32541; JB/T 4392; JB/T 4393; JB/T 6955 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the formulation and implementation methods of liquid immersion quenching and cooling process, the requirements for the use of cooling media, the technical requirements for liquid immersion quenching and cooling equipment, the technical requirements for quenching cranes, operating machines, manipulators and quenching fixtures, quality control and inspection, And safety production and environmental protection requirements. This standard applies to immersion quenching and cooling of steel, but not to non-immersion quenching and cooling. For other metal materials, immersion quenching and cooling can refer to this standard. | GB/T 37435-2019: Cooling technical requirements of heat treatment---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Cooling technical requirements of heat treatment
ICS 25.200
J36
National Standards of People's Republic of China
Heat treatment cooling technical requirements
Published on.2019-05-10
2019-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Quenching and cooling process development and implementation 2
5 Quenching and cooling medium use requirements 8
6 Technical requirements for immersion quenching and cooling equipment 10
7 auxiliary equipment for quenching equipment 14
8 Quality Control and Inspection 15
9 Safety Production and Environmental Protection 17
Appendix A (informative) Method for the preparation of quenching and cooling process---hardenability method (qualitative method) 19
Appendix B (informative) Measures to prevent quenching cracking and reduce quenching distortion 21
Appendix C (informative) equivalent cooling rate sample 23
Appendix D (informative) Cooling characteristics of quenching cooling media 26
Appendix E (Normative Appendix) Evaluation of Cooling Capacity of Quenching Cooling Medium---Hardness Gradient Method 29
Appendix F (informative) Flow, guidance and current sharing of propeller agitators and media 31
Appendix G (informative) Media agitation device for cooling curve measurement 33
Reference 34
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the National Heat Treatment Standardization Technical Committee (SAC/TC75).
This standard was drafted. Shanghai Jiaotong University, Beijing Electromechanical Research Institute Co., Ltd., Nanjing Kerun Media Co., Ltd., Beijing Huali
Fine Chemical Company, Hubei Sanhuan Forging Co., Ltd., Changzhou New District Hehai Heat Treatment Engineering Co., Ltd., Zhejiang Shuanghuan Transmission Machinery Co., Ltd.
Company, Jiangsu Fengdong Heat Treatment and Surface Modification Engineering Technology Research Co., Ltd., Guizhou Hangyu Technology Development Co., Ltd., Zhongche
Shushu Locomotive & Rolling Vehicle Technology Research Institute Co., Ltd., Xi'an Follett Heat Treatment Co., Ltd., Ningxiang Nuclear Industry Heat Treatment Materials Co., Ltd.
Division, Shandong Tianrui Heavy Industry Co., Ltd., Shandong Cooper Bearing Technology Service Co., Ltd.
The main drafters of this standard. Chen Nailu, Xu Yueming, Hu Xiaoli, Zuo Xunwei, Li Qiao, Zuo Yongping, Ge Shengdong, Dai Heping, Yin Heping,
Niu Wanbin, Shi Yousen, Xie Chuye, Yang Minghua, Yang Hongfei, Zhang Fuquan, Li Yongsheng, Yan Jingxiang.
Introduction
In the heat treatment process, different cooling methods are used depending on the material type, size, structural characteristics and performance requirements of the workpiece.
The steel immersion quenching cooling method is the most widely used, so the heat treatment cooling technology specified in this standard is only for the steel immersion liquid.
Quenching and cooling process.
The rigor of the formulation and implementation of the quenching and cooling process will directly affect the performance and mass dispersion of the workpiece. Correct selection of quenching cooling
Medium, quenching and cooling equipment, quenching fixtures and performing a reasonable quenching and cooling process are prerequisites for the performance of the workpiece, while quenching the cooling medium
The composition, concentration, temperature, flow rate and uniformity, as well as the control accuracy of the quenching and cooling process determine the dispersion of the workpiece quality.
The implementation of this standard will help to ensure the quenching and cooling quality of the workpiece, reduce the mass dispersion of the batch processing parts and achieve product quality.
Traceable.
Heat treatment cooling technical requirements
1 Scope
This standard specifies the formulation and implementation methods of the immersion quenching and cooling process, the requirements for the use of cooling media, and the immersion quenching and cooling equipment.
Technical requirements, technical requirements for quenching cranes, manipulators, manipulators and quenching fixtures, quality control and inspection, and safety production and environmental protection
Request and so on.
This standard is applicable to the immersion quenching cooling of steel. It is not suitable for non-immersion quenching and cooling. Other metal materials are immersed in quenching and cooling.
To refer to this standard.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 265 petroleum product kinematic viscosity measurement method and dynamic viscosity calculation method
GB/T 268 Determination of residual carbon in petroleum products (Kang's method)
GB/T 511 Determination of mechanical impurities in petroleum and petroleum products and additives
GB/T 699 high quality carbon structural steel
GB/T 3077 alloy structural steel
GB/T 3536 Determination of flash point and ignition point of petroleum products Cleveland open cup method
GB/T 4945 Determination of acid value and base number of petroleum products and lubricants (color indicator method)
GB/T 7232 metal heat treatment process terminology
GB/T 7304 Determination of acid value of petroleum products - Potentiometric titration
GB 8978 Integrated Wastewater Discharge Standard
GB/T 11133 Determination of water content in petroleum products, lubricating oils and additives - Karl Fischer Coulometric titration
GB/T 11901 Determination of suspended solids by weight method
GB/T 13324 heat treatment equipment terminology
GB 15735 metal heat treatment production process safety and health requirements
GB/T 17145 Technical guidelines for waste lubricating oil recovery and recycling
GB/T 27945.3 Management of hazardous solid wastes for heat treatment salt baths - Part 3. Harmless treatment
GB/T 27946 Limits of heat treatment of hazardous substances in the workplace
GB/T 30822 heat treatment environmental protection technical requirements
GB/T 30823 Test method for nickel alloy probes for determining the cooling properties of industrial quenching oils
GB/T 32541 heat treatment quality control system
JB/T 4392 polymer water-soluble quenching medium determination method
JB/T 4393 polyvinyl alcohol synthetic quenching agent
JB/T 6955 Technical requirements for quenching media for heat treatment
JB/T 7688.6 Technical conditions for metallurgical cranes - Part 6. Quenching cranes
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