Fused Flux
Fused flux is a powder made by melting and granulating. It has high chemical homogeneity and remains insensitive to moisture.
Physical-Chemical Mechanism of Action
Fused welding flux is produced by melting a metal or alloy, followed by rapid cooling and granulating. This process gives the flux a homogeneous chemical composition and makes it insensitive to moisture.
Metallurgical Relevance & Risks in Welding
The high homogeneity of fused fluxes leads to a uniform weld with consistent mechanical properties. A moisture-insensitive flux prevents corrosion and burning during welding. However, improper handling can cause uneven cooling or excessive alloy content, leading to cracks or poor mechanical properties.
Workshop Practice & Instructions
Use fused flux in a protected environment to avoid corrosion and burning. Ensure the flux is dry and undamaged. Use the recommended amount of alloy and ensure even distribution. If cracking or poor properties occur, check flux quality and welding parameters.