Why should silicon content be controlled in light burned magnesium spheres

Light burned magnesium ball The silicon dioxide content in the steel shall be controlled at a certain percentage. If the silicon content exceeds the standard, the plasticity and toughness of the steel will be significantly reduced. Silicon can reduce the density, thermal conductivity and electrical conductivity of steel. It can promote ferrite grain coarsening and reduce coercivity. Light burned magnesium ball supply, silicon can promote columnar crystal growth in cast steel, reduce plasticity. Silicon can reduce the weldability of steel. Because the binding capacity of silicon with oxygen is stronger than that of iron, it is easy to generate silicate with low melting point during welding, which increases the fluidity of slag and molten metal, causes splashing and affects the welding quality. Therefore, the silicon content in light burned magnesium spheres must be strictly controlled to avoid being brought in as raw material during steelmaking.