Standard No.:	JB/T 6438-1992
English Name:	Plasma arc surfacing welding for sealing surface of valves Technical requirements
Chinese Name:	阀门密封面等离子弧堆焊 技术要求
Chinese Classification:	J16    Valve
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	MMBEI
Issued on:	1992-07-20
Implemented on:	1993-1-1
Status:	superseded
Superseded by:	JB/T 6438-2011 Technical requirements for plasma arc overlaying welding for valve sealing surface
Superseded on:	2011-8-1
Abolished on:	2011-08-01
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	264.00
Delivery:	via email in 1~3 business day

本标准规定了阀门密封面等离子堆焊对焊工、堆焊材料、常用基体材料、堆焊工艺、质量检验、缺陷修复等方面的要求。本标准适用于碳钢、合金钢、不锈钢等通用、电站、石油化工阀门密封面等离子弧堆焊钴基、镍基、铁基合金粉末材料的制造与检验。