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GB/T 45983.1-2025 English PDF

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US$289.00 · In stock
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GB/T 45983.1-2025: Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45983.1-2025	289	Add to Cart	3 days	Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding	Valid

Basic data

Standard ID: GB/T 45983.1-2025 (GB/T45983.1-2025)
Description (Translated English): Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J36
Classification of International Standard: 25.200
Word Count Estimation: 14,118
Date of Issue: 2025-08-01
Date of Implementation: 2026-02-01
Issuing agency(ies): State Administration for Market Regulation, Standardization Administration of China

GB/T 45983.1-2025: Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT45983.1-2025
ICS 25.200 CCSJ36 National Standard of the People's Republic of China Rare earth chemical heat treatment Part 1.Carburizing and carbonitriding Released on August 1, 2025 Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Process code 2 5 Workpieces to be processed 2 6 Rare earth penetrant 4 7 devices 4 8 Technology and process control 6 9 Quality Inspection 7 10 Safety, Health and Environmental Protection 8 11 Energy consumption 8 12 Product Report 8 Appendix A (Informative) Physical and Chemical Properties of Main Rare Earth Salts 9 Preface 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. This document is Part 1 of GB/T 45983 Chemical Heat Treatment of Rare Earths. GB/T 45983 has been published in the following parts. --- Part 1.Carburizing and carbonitriding. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Heat Treatment (SAC/TC75). This document was drafted by. Harbin Institute of Technology, Beijing Electromechanical Research Institute Co., Ltd. of China Machinery Engineering Corporation, Jiangsu Pacific Precision Forging Co., Ltd. Technology Co., Ltd., Harbin Engineering University, Zhongte Tailai Mould Technology Co., Ltd., Taiyuan Heavy Industry Rail Transportation Equipment Co., Ltd., Heilongjiang Engineering College, Sichuan Yuanfang High-tech Equipment Parts Co., Ltd., Jiangsu Spacecraft Co., Ltd., Changshu Tiandi Coal Mining Equipment Co., Ltd., Shandong Haili Transmission Machinery Manufacturing Co., Ltd., Suzhou Great Wall Precision Technology Co., Ltd., Zhejiang Tianma Bearing Group Co., Ltd. Company, Chengdu Tianma Precision Machinery Co., Ltd., Harbin Shunyuan Machinery Manufacturing Co., Ltd., Harbin Furui Technology Co., Ltd., Shandong Liaocheng Derun Mechanical and Electrical Technology Development Co., Ltd., Yancheng Chongda Petrochemical Machinery Co., Ltd., and Jiangyin Quanhuafeng Precision Forging Co., Ltd. The main drafters of this document are. Yan Mufu, Xu Yueming, Zhang Liping, Liu Ruiliang, Lu Weiwei, Wei Huacheng, Zhang Xiaochen, Li Qiao, Zhang Yuchuan, Huang Tingbo, Yuan Yuedong, Wang Peizhong, Wu Zhen, Ren Deyu, Zou Yong, Tang Hongwei, Zhang Yanxiang, Zhang Zhongwei, Zeng Degang, Xu Pinghua, Zhou Zhicheng, Zuo Biao, Yan Fuyao, Song Xuhai, Peng Guangcheng, Li Lingze, Zhu Lei, and Su Miao.

introduction

Chemical heat treatment is one of the important methods to effectively improve the surface hardness, wear resistance and fatigue resistance of materials or workpieces. When heated to a certain temperature in a certain medium, the adsorption and diffusion or reaction diffusion of elements on the surface of the workpiece occurs through certain components in the medium. The heat treatment process changes the chemical composition of the workpiece or material surface to improve the surface performance. Common chemical heat treatments such as carburizing or nitriding It is widely used, but there are problems such as long process cycle, high energy consumption, easy oxidation, decarburization and deformation of parts. Chinese scholars have invented rare earth chemical thermal Processing technology. Rare earth chemical heat treatment is to introduce rare earth elements into the furnace along with carburizing or carbonitriding medium, nitriding or nitrocarburizing medium, etc. By increasing the interface transfer coefficient of active atoms on the workpiece surface, the carbon potential or nitrogen potential of the atmosphere is quickly established in the furnace, the penetration rate is accelerated, and the process cycle is shortened. On the other hand, rare earth elements can penetrate into the surface of the workpiece, improve the structure of the diffusion layer through microalloying, and further increase the service life of the workpiece. Therefore, rare earth carburizing and carbonitriding (nitriding and nitrocarburizing) can bring obvious economic benefits and have a wide range of industrial application needs and market demand. Field prospects. GB/T 45983 "Rare Earth Chemical Heat Treatment" specifies the application scope, equipment, process and Process control, quality inspection, safety, health and environmental protection, energy consumption and product report requirements are required for the use of rare earth chemical heat treatment Provide technical guidance to enterprises and scientific research departments, and provide reference for improving heat treatment production efficiency, saving energy and reducing emissions, and achieving low-carbon goals. GB/T 45983 “Chemical Heat Treatment of Rare Earths” is intended to be divided into the following parts. --- Part 1.Carburizing and carbonitriding. The purpose is to reduce the working The process temperature can be reduced, the process cycle can be shortened, the carburized layer structure can be improved, and the surface hardness, strength and wear resistance of the workpiece can be increased. --- Part 2.Nitriding and nitrocarburizing. The purpose is to shorten the working time by adding rare earth to the nitriding and nitrocarburizing media. process cycle and improve the hardness, strength and wear resistance of the workpiece. --- Part 3.Boriding. The purpose is to shorten the process cycle and improve the structure of the boronized layer by adding rare earth to the boronizing medium. Weaving can improve the wear resistance of the workpiece. Rare earth chemical heat treatment Part 1.Carburizing and carbonitriding 1 Scope This document specifies the process code, workpiece to be treated, rare earth penetrant, equipment, process and process control, quality inspection, etc. Requirements for testing, safety, health and environmental protection, energy consumption and product reporting. This document applies to gas carburizing and carbonitriding heat treatment of steel parts using methanol or nitrogen-methanol as carrier gas. 2 Normative references The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 224 Determination of the depth of decarburization of steel GB/T 230.1 Rockwell hardness test for metallic materials - Part 1.Test method GB/T 4340.1 Metallic materials Vickers hardness test Part 1.Test method GB/T 6394 Determination of average grain size of metals GB/T 7232 Terminology for Metal Heat Treatment GB/T 8121 Terminology of heat treatment process materials GB/T 9450 Determination and verification of the depth of carburized and quenched hardened layer on steel parts GB/T 9452 Determination of effective heating area of heat treatment furnace GB/T 12603 Classification and codes of metal heat treatment processes GB/T 13324 Terminology of heat treatment equipment GB/T 15676 Rare Earth Terminology GB 15735 Safety and hygiene requirements for metal heat treatment production processes GB/T 15822.1 Non-destructive testing—Magnetic particle testing—Part 1.General principles GB/T 16924 Quenching and tempering of steel parts GB/T 17358 Calculation and determination methods for power consumption in heat treatment production GB/T 19944 Calculation and determination methods for fuel consumption in heat treatment production GB/T 25744 Metallographic examination of steel parts after carburizing, quenching and tempering GB/T 30822 Technical requirements for heat treatment environmental protection GB/T 30825 Heat treatment temperature measurement GB/T 34889 Carburizing and carbonitriding quenching and tempering of steel parts GB/T 37885 Classification of Chemical Reagents GB 39176 Packaging, labeling, transportation and storage of rare earth products JB/T 9218 Nondestructive Testing Penetrant Testing Method JB/T 10312 Steel foil carbon potential method ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45983.1-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45983.1-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45983.1-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45983.1-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.