Cast steel smelting method

时间:2013-11-20 10:45 作者:admin 点击:
The smelting of casting alloys is an indispensable process in the production process of castings, also called smelting process, which is a fundamental factor that determines the quality and cost of castings.Many performance indicators of castings are largely determined by the chemical composition, temperature and purity of the molten metal.Many defects of castings, such as pores, slag inclusions, shrinkage holes (loose), cold barriers, hot cracks, etc., are more or less related to the quality of molten metal.
The smelting of cast alloys includes reasonable selection of smelting equipment and smelting and pouring tools, correct calculation of ingredients, careful charge handling and strict control of the smelting process.
The smelting of cast steel is commonly referred to as steelmaking.Modern steelmaking includes open hearth steelmaking, converter steelmaking, electric furnace steelmaking, etc. depending on the furnace used. Open hearth and converter steelmaking are often used by large and medium-sized joint enterprises. Trending out.Electric furnace steelmaking includes electric arc furnace, induction furnace, electroslag furnace steelmaking, etc.As a foundry for producing steel castings, electric arc furnace steelmaking or induction furnace steelmaking is most commonly used. Generally speaking, electric furnace steelmaking is actually electric arc furnace steelmaking.There are also many factories that use induction electric furnaces to make steel, and most of them use industrial frequency furnaces and intermediate frequency furnaces.By the way, the induction furnace is not only used for steelmaking, but also used for the smelting of cast iron, which will be discussed in the following chapters.In order to obtain molten iron with higher temperature and strict chemical composition, cupola smelting is used in the production, and then the temperature is kept or heated in the induction furnace and the composition is adjusted. Generally, this method of combining two smelting furnaces to smelt metal is called double Joint smelting.
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