Standard No.:	JB/T 9730-1999
English Name:	Metallographic examination of diesel injector nozzle plunger and delivery valve of diesel fuel injection pump
Chinese Name:	柴油机喷油嘴偶件、喷油泵柱塞偶件、喷油泵出油阀偶件 金相检验
Chinese Classification:	J94    Fuel oil heating system
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	43.060.40 43.060.40    Fuel systems 43.060.40
Issued by:	Technical Committee on Standardization for Oil Pump and Nozzle
Issued on:	1999-09-17
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 9730-2011 Diesel Injection Nozzle, Plunger and Delivery Valve of Fuel Injection Pump - Metallographic Examination
Superseded on:	2012-4-1
Superseding:	ZB J94007-1988
Language:	English
File Format:	PDF
Word Count:	9500 words
Price(USD):	280.0
Delivery:	via email in 1~3 business day

JB/T 9730-1999 本标准是对 ZB J94 007-88《柴油机喷油嘴偶件、喷油泵柱塞偶件、喷油泵出油阀偶件 金相检验》的修订。修订时仅按有关规定作了编辑性修改，主要技术内容没有改变。 本标准规定了柴油机喷油系统喷油嘴偶件、喷油泵柱塞偶件和喷油泵出油阀偶件（零件有效厚度小于或等于 12mm）经热处理后金相组织的检验。 本标准适用于 GCr15 钢精密偶件的金相检验；合金结构钢针阀体渗碳、热处理的金相检验；W6Mo5Cr4V2、W18Cr4V 钢针阀的金相检验。 本标准于 1976 年以 NJ 97-76 首次发布，于 1988 年第一次修订为 ZB J94 007-88。