What are the methods to improve the speed of intermediate frequency furnace smelting?
a method for improving the smelting speed of an intermediate frequency furnace,
1 Medium frequency furnace smelting uses high quality die steel raw materials. In the smelting of mold steel, high-quality raw materials should be used as much as possible. In the scrap steel, not only the content of Sand P should be low, but also other harmful elements such as As , Sn , Pb and Cu should be strictly controlled . Scrap should use as much scrap as possible ( preferably the return material of this group ) or high quality pig iron. When smelting by oxidation, the amount of carbon removed during the oxidation period should be ensured as much as possible.
2 Medium frequency furnace smelting uses high quality refractory materials. When using the induction furnace to smelt the mold steel, high-quality scouring refractories should be used. For example, high-quality magnesia carbon bricks can be used for the lining, and high-aluminum or magnesia-carbon bricks are generally used for ladle, and refractory materials including castings must be taken care of.
3 Argon blowing agitation used in smelting and smelting of intermediate frequency furnace. When the mold steel is smelted, the argon blowing is used to accelerate the floating speed of the inclusions, and the smaller inclusions can be easily floated by collision and polymerization to form larger inclusions, but the amount of argon blowing should be controlled appropriately. If the flow rate of argon blowing is too large or the argon blowing time is too long, the steel slag will be involved in the molten steel, which will bring more slag or inclusions and reduce the temperature of the molten steel too much. The intermediate frequency furnace smelting uses synthetic slag. The special slag is added to the molten steel to strengthen the conversion process of harmful impurities into the slag. There are many formulas for synthesizing slag, and there are many ways to add it. When it is necessary to remove non-metallic inclusions of a certain composition, Select the appropriate synthetic slag.
