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GB/T 8121-2012 English PDF

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GB/T 8121-2012: The terminology of technological materials of heat treatment
Status: Valid

GB/T 8121: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 8121-2012	English	439	Add to Cart	4 days [Need to translate]	The terminology of technological materials of heat treatment	Valid	GB/T 8121-2012
GB/T 8121-2002	English	599	Add to Cart	4 days [Need to translate]	The terminology of technological materials for heat treatment	Obsolete	GB/T 8121-2002
GB/T 8121-1987	English	319	Add to Cart	3 days [Need to translate]	The terminology of technological materials for heat treatment	Obsolete	GB/T 8121-1987

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Basic data

Standard ID	GB/T 8121-2012 (GB/T8121-2012)
Description (Translated English)	The terminology of technological materials of heat treatment
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J36
Classification of International Standard	25.200
Word Count Estimation	19,160
Older Standard (superseded by this standard)	GB/T 8121-2002
Regulation (derived from)	National Standards Bulletin No. 24 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the heating medium and heat treatment, quenching medium, chemical heat penetration, heat protective coating heat treatment process materials mainly terminology, definitions and English. This standard applies to heat treatment techn

GB/T 8121-2012: The terminology of technological materials 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.
ICS25.200 J36 National Standards of People's Republic of China Replacing GB/T 8121-2002 Heat treatment process material terms Issued on. 2013-03-01 2012-09-03 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Preface Ⅰ 1 Scope 1 2 Total Class 1 3 Common atmosphere heat treatment category 1 4 heat treatment salt bath with salt 3 5 carburizing, nitriding agent and alloying agent class 4 6 infiltration agent and other non-metallic alloying agent class alloying agent 6 7 quenching medium class 7 8 heat treatment protective coating category 8 9 Surface Modification of Materials 9 Appendix A (normative) Chinese index 10 Appendix B (normative) English Index 12

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 8121-2002 "heat treatment process material terms." This standard compared with GB/T 8121-2002, the main changes as follows. --- To increase and modify some of the terms and definitions (see 3.10 - 3.14); --- Modify some of the terms of the English name; --- Adjust some of the terms of the category. This standard by the National Standardization Technical Committee heat treatment (SAC/TC75) and focal points. This standard was drafted. Wuhan Institute of Material Protection, Guangdong Siltronic Metal Technology Co., Ltd. Nanjing Branch of China media industry, Beijing Institute of Electrical. The main drafters. Zhang community, Dong Xiaohong, Niexiao Lin, Shao Zhoujun, red Yang Min, Wang Guimao left Yongping, was Lu Dong, Li Peng. This standard replaces the standards previously issued as follows. --- GB/T 8121-1987, GB/T 8121-2002. Heat treatment process material terms

1 Scope

This standard specifies the heat treatment associated with the heating medium, quenching medium, chemical heat penetration, heat treatment, heat protection coatings Treatment process materials mainly terminology, definitions and English. This standard applies to heat treatment professional and technical standards and technical documents.

2 Total Class

2.1 Heat Treatment Materials technologicalmaterialsforheattreatment In order to ensure the metal or workpiece material (hereinafter referred to as a workpiece) be real heating, insulation, cooling and heat treatment processes of chemical Applied to obtain the desired chemical composition, structure and properties of various types of material and surface condition required. 2.2 Heating medium heatingmedium Heating the workpiece, the absorption heat is used, heat transfer material such as various atmospheres, salts, alkalis or metal bath, and an oil and Some other solid particulate materials and the like. 2.3 Quenching medium quenchingmedium Quenching the workpiece absorbent used, the heat transfer substances such as water and an aqueous solution of a water-soluble salt, or organic bases, and And an oil, molten salt, nitrogen, argon, air and the like. 2.4 Chemical heat penetration thermo-chemicaltreatmentagent At a given temperature to produce one or more active atoms, and can penetrate the surface of the workpiece to alter its chemical composition, structure and properties Substances chemical heat treatment process can be of use. 2.5 Heat treatment protective coating protectivepaintsforheattreatment At a given temperature, can protect the paint surface is not heated oxidation, decarbonization, or other changes in chemical composition such as oxidation, Anti-carburizing, seepage boron coatings. 2.6 Surface modification of materials surfacemodificationmaterial In plasma, laser, electron beam, ion beam techniques, the material used for the surface modification.

3 heat treatment commonly used class atmosphere

3.1 Protective atmosphere protectiveatmosphere At a given temperature, can protect the surface of the workpiece is heated no oxidation, decarbonization or other changes in the chemical composition of the atmosphere does not occur.

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