- Contact Person : Ms. Xu Lin
- Company Name : Hangzhou Huaguang Advanced Welding Materials Co., Ltd.
- Tel : 86-571-88779191
- Fax : 86-571-88778459
- Address : Zhejiang,Hangzhou,Xiaoyangba Rd., Gouzhuang Industrial District, Liangzhu,Hangzhou
- Country/Region : China
- Zip : 311112
brazing flux
Brazing flux is used to provide active and remove oxide on work pieces and brazing filler metal, and facilitate the shaping of brazing joint. It helps liquid brazing filler metal wetting and extending on surface of material. Brazing flux can destroy and melt oxidation on the surface of material. It has lower melting point than brazing filler metal, favorable heat stability, low viscosity, good fluidity. It is extensively used in brazing of Cu-based or Silver brazing filler metals.
Features of brazing flux
Grades | Composition WT% | Melting Temperature/ | Category | ||||
H3BO3 | KF | KBF4 | B2O3 | K2CO3 | |||
FB101 | 29-31 | / | 69-71 | / | / | 550-850 | Powder |
FB102 | / | 41-43 | 22-24 | 34-36 | / | 600-850 | Powder |
FB103 | / | / | 94-96 | / | 4.0-6.0 | 550-750 | Powder |
FB105G | <50 | >20 | >25 | / | / | 550-850 | Paste |
QJ501Y | boric acid Methyl borate MethanolSurfactant etc | 650-850 | Liquid | ||||
QJ403 | Methyl borate MethanolSurfactant etc | >450 | Liquid | ||||
brazing flux
