Standard No.:	JB/T 7948.4-1999
English Name:	Methods for chemical analysis of melted welding fluxes - The EDTA volumetric method for determination of aluminium oxide content
Chinese Name:	熔炼焊剂化学分析方法 EDTA 容量法测定氧化钙、氧化镁量
Chinese Classification:	J33    Welding and cutting
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	25.160.20 25.160.20    Welding consumables 25.160.20
Issued by:	National Technical Committee on Standardization of Welding
Issued on:	1999-6-24
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 7948.3-2017 Methods for chemical analysis of welding fluxes. Part 3: Determination of　aluminium oxide content
Superseded on:	2018-4-1
Superseding:	JB/T 7948.4-1995
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	60.00
Delivery:	via email in 1~3 business day

JB/T 7948.4-1999 本标准等效采用 ΓOCT 2978.1~.10-78《熔炼焊剂化学分析方法》。 本标准是对 JB/和7948.4-95《熔炼焊剂化学分析方法 EDTA 容量法测定氧化铝量》的修订。修订时仅按有关规定作了编辑性修改，其技术内容没有改变。 本标准适用于熔炼焊剂中氧化铝量的测定，测定范围 1.00%~40.0%。 本标准于 1985 年以 GB 5292.4-85 首次发布，于 1996 年 4 月调整为 JB/T 7948.4-95。