This standard specifies the classification and codes of subcategories and subcategories of heat treatment process methods. This standard applies to computer-aided process management and process design in the machinery manufacturing industry. The codes specified in this standard are not suitable for marking on drawings. JB/T 5992.7-1992 Mechanical manufacturing process method classification and code heat treatment JB/T5992.7-1992 Standard download and decompression password: www.bzxz.net

J30 | | tt | | JB | -17 Release
Implementation of the Ministry of Mechanical and Electronics Industry of the People's Republic of China on 1993-07-01
Release
Machinery Industry Standard of the People's Republic of China
Classification and Code of Machinery Manufacturing Process Methods
1 Subject content and scope of application
Heat treatment
This standard specifies the division of subcategories and subcategories of heat treatment process methods and their codes. This standard applies to computer-aided process management and process design in the machinery manufacturing industry. The codes specified in this standard are not suitable for marking on drawings. 2 Reference Standards
GB7232
JB/T5992.1
3 Classification Principles
Metal Heat Treatment Process Terminology
General Principles of Classification and Code of Mechanical Manufacturing Process Methods 3.1 Classification of large categories and medium categories
The division of heat treatment process methods into large categories and medium categories shall be in accordance with the provisions of JB/T5992.1. 3.2 Division of subcategories
3.2.1 The overall heat treatment subcategory is divided according to the metallographic structure obtained after heat treatment. 3.2.2
3.2.3
JB/T5992.7-92
Surface heat treatment subcategory is based on the surface metallographic structure obtained after heat treatment and the acquisition of surface deposited elements or compound layers method of division. The chemical heat treatment subcategory is mainly divided according to the access elements. 3.3 Subdivision classification
3.3.1
3.3.2
3.3.3
Annealing Process method division
Rate fire is divided according to cooling medium, cooling method and heating method. Tempering is divided according to heating temperature
3.3.4
Surface floating fire is divided according to heating method.
3.3.5
3.3.6
3.3.7
3.3.8
Carburizing, nitriding and boronizing are divided according to the heating medium. Infiltrated metals and multiple elements are divided according to the element of penetration. Solubilization is divided by heating method.
Other subcategories of heat treatment This standard is no longer subdivided. 4 Heat treatment process method subcategory name and code Heat treatment process method subcategory name and code are in accordance with the provisions of Table 1. 5 Heat treatment process method subdivision name and code Heat treatment process method The names and codes of subdivisions are as specified in Table 2. Approved by the Ministry of Mechanical and Electronic Industry on 1992-07-17 and implemented on 1993-07-01
21
Large generation
Medium size
Class
51|| tt||52
53
22
Medium class name
Overall
Heat treatment
Surface painting
Heat treatment| |tt||Chemistry
Heat treatment
0
Annealing
Surface
Xinhuo
Carbon
2|| tt||normalizing
physical gas
phase deposition
carbon ammonia
co-yu
JB/T5992.792
Table 1
small
3
pyroselective
chemical gas
phase deposition
sea nitrogen
small||tt| |Class
4
Class
Fire selection
Round fire
Plasma
Chemical gas phase
Accumulation
nitrogen head
gonghai
generation
5
name
conditioning
of||tt| |Weighing
Others
Non-metals
6
Stabilization
Processing
Metalization
Solid solution| |tt||Processing
Multiple
Co-penetration
Ageing
Melting Bay
2
Cutting
66| |tt||%
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Big, medium and small
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Cool
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JB/T 5992.792
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