which models of silicon carbide are more favored by foundries

　Silicon carbide is increasingly becoming a casting method and still requires certain smelting materials. Not all silicon carbide is suitable for casting production methods. When purchasing silicon carbide, you should choose special cast silicon carbide according to the requirements of the products you make Product selection, such as cast silicon carbide used in casting gray cast iron, ductile iron, and graphite cast iron, is different.

　　What are the types of cast silicon carbide?

　　The most widely used cast silicon carbide are 70# silicon carbide, 88# silicon carbide, and 90# silicon carbide. Different grades of cast silicon carbide can produce different chemical responses and effects when casting according to the control of the product. For cast products of different quality, when the temperature is lower than 1620°C, the carbon in the cast silicon carbide will act as a deoxidizer, so that less fixed oxides such as iron oxide and manganese oxide are reduced through chemical response. When the temperature is higher than 1620°C (for example, during smelting), the silicon in the silicon carbide will take on all the deoxidation tasks, while the carbon will act as a recarburizer, and the yield can reach 100%.

　　Casting silicon carbide plays a vital role in the casting technology. Old foundry drivers are also familiar with the use of 70# silicon carbide, 88# silicon carbide, and 90# silicon carbide in the casting process, which can often greatly reduce the phenomenon of casting white mouth, and It improves the fluidity of molten iron and reduces the casting time. Cast silicon carbide also has the characteristics of pre-incubation. Selecting 70# silicon carbide, 88# silicon carbide and 90# silicon carbide in the production method of nodular cast iron can often promote At the beginning of graphitization, changing the distribution of graphite has the effect of updating the quality of iterative cast iron products.

　　Cast silicon carbide plays an indispensable role in the casting production method. Common cast silicon carbide is 70# silicon carbide, 88# silicon carbide, and 90# silicon carbide. Cast silicon carbide grades selected while making different casting products It is also not the same, by applying proper and correct cast silicon carbide products, you can better produce high-quality cast products!