Steelmaking method are many, mainly include induction furnace steelmaking, open hearth steelmaking, eaf steelmaking, etc. In the cast steel workshop in general use in electric arc furnace and induction furnace. They demand for raw materials is relatively loose, the refining of molten steel quality is higher, and the characteristic of steel cycle is suitable for steel casting production, furnace, the furnace is more convenient, easy to shape, box coordinated progress of pretreatment, easy to organize production. In addition, electric furnace steelmaking equipment is simple, less investment, infrastructure and capital recovery fast.
In recent years, the series intermediate frequency furnace steelmaking development gradually. Induction medium frequency electric furnace steelmaking process is simpler, molten steel quality can be guaranteed. Many factories to pouring small castings with induction furnace steelmaking, especially revestment precision casting workshop, widely used in induction furnace for melting steel.
In heavy machinery works, still use open hearth steelmaking, open hearth furnace capacity is generally larger than the electric furnace, using open-hearth steelmaking can be a devil out of a large number of molten steel, suitable for heavy castings poured too large and complex. Open hearth steelmaking cycle is long, however, a furnace smelting steel usually need to more than six hours of time. Open hearth furnace large and complex structure, low production, steel quality is better than electric furnace, so its development is limited by a lot of. In some countries, is no longer build new open hearth furnace.
In recent decades, medium frequency induction furnace steelmaking are widely used in steel industry, the steel method is fast, high productivity, molten steel quality is guaranteed, the furnace is applicable to steel ingot production.
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