Definition

A substance that can be melted to form slag and / or gas during welding, and has the function of protecting and metallurgical physical and chemical protection of molten metal.

Introduction

Welding flux

A substance that can be melted to form slag and gas during welding, which protects and melts the molten metal. Submerged arc welding is used for submerged arc welding. When used for brazing, there are: brazing flux and soldering flux.

Flux is also called flux, which should be widely defined, including molten salts, organics, reactive gases, metal vapors, etc. Except for the base metal and solder, it refers to the third type used to reduce the interfacial tension between the base metal and the solder substance.

The wetting ability of the brazing filler metal and the base material has a great relationship with the nature of the brazing material, but it is more secondary than the role of the flux.