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GB/T 38805-2020Technical requirements of heat treatment for heavy duty gears (English PDF)

重载齿轮热处理技术要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 2, 2020

Implementation date

January 1, 2021

Scope

GB/T 38805-2020 is the English-translated version of 重载齿轮热处理技术要求.

GB/T 38805-2020 is the Chinese standard "Technical requirements of heat treatment for heavy duty gears".

Its scope clause reads: This standard specifies common materials for heavy-duty gears, heat treatment equipment, processes, quality inspection, energy consumption, safety, health and environmental protection Requirements etc. This standard applies to gas carburizing quenching and tempering, nitriding and induction quenching and tempering of heavy-duty gears.

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Document preview — GB/T 38805-2020

National Standard of the People's Republic of China

ICS: 25.200
Classification: J 36

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Carburizing, quenching and tempering
5 Nitriding
6 Induction hardening and tempering
7 Energy consumption requirements
8 Safety, health and environmental protection requirements
9 Product Report
Appendix A (informative appendix) The recommended depth of the hardened layer of the carburized gear is
Appendix B (informative appendix) Recommended value of hardened layer depth of nitriding gear

1 Scope

This standard specifies common materials for heavy-duty gears, heat treatment equipment, processes, quality inspection, energy consumption, safety, health and environmental protection

Requirements etc.

This standard applies to gas carburizing quenching and tempering, nitriding and induction quenching and tempering of heavy-duty gears.

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

GB/T 230.1 Rockwell hardness test of metallic materials Part 1.Test method

GB/T 231.1 Brinell hardness test of metallic materials Part 1.Test method

GB/T 3077 alloy structural steel

GB/T 4336 Determination of multi-element content of carbon steel and medium and low alloy steel Spark spark atomic emission spectrometry (conventional method)

GB/T 4340.1 Metallic materials Vickers hardness test Part 1.Test method

GB/T 4341.1 Shore hardness test of metallic materials Part 1.Test method

GB/T 5216 structural steel with hardenability guaranteed

GB/T 5617 Determination of effective hardened layer depth after induction hardening or flame quenching of steel

GB/T 6394 Method for determining the average grain size of metals

GB/T 7232 Terminology of metal heat treatment process

GB/T 8121 Terminology of heat treatment process materials

GB/T 9450 Determination and verification of the depth of carburizing and hardening layer of steel parts

GB/T 9452 Determination method of effective heating zone of heat treatment furnace

GB/T 10561 Determination of non-metallic inclusions in steel Standard micrograph inspection method

GB/T 11354 Depth determination and metallographic examination of steel parts

GB/T 13298 Metal microstructure inspection method

GB/T 13299 Steel microstructure evaluation method

GB/T 13324 Terminology of heat treatment equipment

GB 15735 Safety and health requirements for metal heat treatment production process

GB/T 15822.1 Non-destructive testing Magnetic particle testing Part 1.General

GB/T 17107 structural steel grades and mechanical properties for forgings

GB/T 17358 Calculation and determination method of power consumption in heat treatment production

GB/T 17394.1 Metallic materials Leeb hardness test Part 1.Test method

GB/T 18449.1 Metallic material Knoop hardness test Part 1.Test method

GB/T 19944 Calculation and determination method of fuel consumption in heat treatment

GB/T 20123 Determination of total carbon and sulfur content of iron and steel Infrared absorption method after high-frequency induction furnace combustion (conventional method)

GB/T 25744 metallographic examination of steel carburizing, quenching and tempering

GB/T 30822 Technical requirements for heat treatment and environmental protection […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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