JB/T 8491.2-2008
Technical requirement heat treatment for machine tool parts. Part 2: Quenching and tempering (English Version)

Standard No.

JB/T 8491.2-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Machinery

Latest

JB/T 8491.2-2008

Replace

JB/T 8491.2-1996

Scope

This part of JB/T 8491 specifies the technical requirements, inspection methods and acceptance rules for quenching and tempering of metal cutting machine tool parts (hereinafter referred to as parts). This section applies to steel parts that are quenched and tempered by penetration heating in a heating furnace and have a surface hardness equal to or greater than 35HRC.

JB/T 8491.2-2008 Referenced Document

• GB/T 13298 Inspection methods of microstructure for metals
• GB/T 224 Determination of the depth of decarburization of steels*， 2019-06-04 Update
• GB/T 230.1 Metallic materials.Rockwell hardness test.Part 1:Test method*， 2018-05-14 Update
• JB/T 1255-2001 Specification for heat-treatment of rolling bearing parts made from high carbon chromium steel
• JB/T 9211 Martensite grade of medium-carbon steel and medium-carbon alloy structural steel

JB/T 8491.2-2008 history

• 2008 JB/T 8491.2-2008 Technical requirement heat treatment for machine tool parts. Part 2: Quenching and tempering
• 1996 JB/T 8491.2-1996 Technical conditions for heat treatment of machine tool parts Quenching and tempering