JB/T 7948.7-1999
Methods for chemical analysis of melted welding fluxes.The lead chlorofluoride-EDTA volumetric method for determination of calcium fluoride content (English Version)
- Standard No.
- JB/T 7948.7-1999
- Language
- Chinese, Available in English version
- Release Date
- 1999
- Published By
- Professional Standard - Machinery
- Status
- 2018-04
- Replace By
- JB/T 7948.5-2017
- JB/T 7948.7-2017
- Latest
- JB/T 7948.5-2017
- JB/T 7948.7-2017
- Replace
- JB/T 7948.7-1995
- Scope
- This standard is applicable to the determination of calcium fluoride content in smelting flux. The measurement range is 3.00%~40.0%. This standard complies with GB/T 1467-1978 "General Provisions and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
JB/T 7948.7-1999 history
- 2017 JB/T 7948.5-2017 Methods for chemical analysis of fluxes Part 5: Determination of calcium fluoride content
- 1999 JB/T 7948.7-1999 Methods for chemical analysis of melted welding fluxes.The lead chlorofluoride-EDTA volumetric method for determination of calcium fluoride content
- 1970 JB/T 7948.7-1995 Methods of Chemical Analysis of Soldering Flux Part 7: Determination of Sodium Oxide and Potassium Oxide
JB/T 7948.7-1999 Methods for chemical analysis of melted welding fluxes.The lead chlorofluoride-EDTA volumetric method for determination of calcium fluoride content was changed to JB/T 7948.5-2017 Methods for chemical analysis of fluxes Part 5: Determination of calcium fluoride content.
