Stroflux

WHAT IS STROFLUX?

Fluxes are foundry chemicals used in powder, granule, etc. forms to remove oxidized compounds and impurities in the molten metal from the liquid metal bath, to turn it into a clean melt suitable for casting, and also to prevent gas absorption by cutting off contact with the atmosphere.

Copper-based alloys that come into contact with oxygen in the atmosphere during the melting process have a high tendency to form oxidized compounds due to their high affinity to oxygen, such as copper, beryllium, zirconium, phosphorus, iron, zinc, silicon, aluminum, manganese. If these oxides are present in the environment during melt solidification after casting, they segregate along grain boundaries and reduce mechanical properties. Scrap, which can be used as raw materials in casting, return materials such as sawdust from processing, and waste materials from the previous casting can be used. In addition, they can mix into the metal bath as a result of the wear of the refractory in contact with the melt. All these materials and the environment lead to contamination of the liquid metal. This situation causes melting and casting defects such as hydrogen, carbon and oxygen based gas voids, porosity, inclusions, impurities in materials after casting.

In the current technique, fluxes used for copper-based materials facilitate the melting of metals with high melting points such as iron, manganese, chromium, nickel in liquid metal. In addition to providing slag cleaning processes in liquid metal, it also has the performance of acting as a cover on liquid metal that prevents contact with air. In addition, it shows the feature of cleaning slag accumulated in the linings of induction furnaces over time and prevents impurities from entering the liquid metal.