As we all know, we manufacturing machinery components which require great intensity, plasticity and tenacity.
Casting parts are made after smelting process. Thus, it is critical for manufacturers to choose the most suitable furnaces for production of different castings.
The smelting process of casting steels are often operated with open-hearth furnaces, electric-arc furnaces and induction furnaces.
First. Open-hearth furnaces.
The open-hearth furnace has a huge capacity. It can utilize waste steels as raw materials and correctly control the components of steels to smelt superior steels and low alloy steels. Open-hearth furnaces are commonly used to produce liquid steels for steel castings that requiring high quality and big size.
Second. Electric-arc furnaces.
It is convenient to run or shut down the three-phase electric-arc furnaces. This kind of furnace can guarantee the elements and quality and liquid steels. Three-phase electric-arc furnaces are not strict at furnace burdens and liable to heat up. Therefore, electric-arc furnaces can manufacture high-quality steels, high-grade alloy steels and special steels. They are common equipment in the manufacture of
steel castings.
Third. Induction furnaces.
Induction furnaces with power frequency or medium frequency can smelt all sorts of high quality alloy steels and steels with low carbon content. With high smelting speed, induction furnaces consume less alloy elements than others. The induction furnace is energy-saving. It can produce high quality liquid steels of few impurities.
Fourth. Ladle refining furnaces.
Ladle refining furnaces purified the liquid steels made by primary smelting equipment, including electric-arc furnaces, open-hearth furnaces and converters. The ladle refining furnace can adjust temperatures of liquid steels. It can effectively eliminate gases and slag inclusions in liquid steels to improve quality of steels. It is an important metallurgical equipment for continuous casting or rolling. It is also one of main equipment for external refining.
