Standard No.:	JB/T 9856-1999
English Name:	General specifications of pressuredie-castings of cast aluminium alloys of rock drilling machines and pneumatic tools
Chinese Name:	凿岩机械与气动工具 压铸铝合金铸件通用技术条件
Chinese Classification:	J84    Rock drilling machinery
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	73.100.10 73.100.10    Tunnelling and tubing equipment 73.100.10
Issued by:	National Technical Committee on Standardization of Drilling Machinery and Pneumatic Tools
Issued on:	1999-06-28
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 9856-2010 General specifications of pressure die-castings of cast aluminium-alloys for rock drilling machines and pneumatic tools
Superseded on:	2010-7-1
Abolished on:	2010-07-01
Superseding:	ZB J84012-1988
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	450.0
Delivery:	via email in 1~3 business day

JB/T 9856-1999 本标准是对 ZB J84 012-88《凿岩机械与气动工具 压铸铝合金铸件通用技术条件》的修订。 本标准规定了压铸件的分类及级别，基本尺寸公差等级，化学成分检验，力学性能检验，铸造斜度，压铸螺纹，加工余量，表面形状及位置公差，清理，表面质量和交付。 本标准适用于凿岩机械与气动工具用压铸铝合金铸件。 本标准于 1988 年 月 日首次发布。