1. Because of its high hardness, good chemical stability, and certain toughness, abrasives are widely used in the manufacture of grinding wheels, oilstones, coated abrasives or free grinding. Mainly used for the grinding of glass, ceramics, stone and other non-metallic materials, cast iron and some non-ferrous metals. Its reactivity with these materials is very weak. The hardness of silicon metal is second only to diamond, and it has strong wear resistance.
2. Due to its high melting point (decomposition temperature), chemical inertness and thermal shock resistance, silicon metal is a high temperature and corrosion resistant material. The main methods of producing silicon metal refractories include pressing and sintering, pressing recrystallization, casting recrystallization, vapor deposition on carbonaceous materials, etc. Silicon metal is widely used in metallurgy due to its high temperature resistance, high strength, good thermal conductivity, and resistance. Shock.
3. Silicon metal can be used as a purifying agent for steel smelting, namely steelmaking deoxidizer and cast iron structure improver. Silicon metal can decompose in molten steel and react with free oxygen and metal oxides in molten steel to form carbon monoxide and silicon-containing slag. In cast iron smelting, too much silicon is often added, so that a small amount of silicon enters the molten iron. This treatment purifies the structure of cast iron and promotes the perfection of cast iron castings.
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