The working principle of vacuum induction melting furnace

The working principle of vacuum induction melting furnace

It is well known that vacuum induction melting furnace process, the metal melting, refining and the whole process of alloying was conducted under the vacuum state, thus avoiding the same gas phase interactions and pollution. Second, under the condition of vacuum, carbon has a strong deoxidization ability, the deoxidizing products CO is pumped to the system, overcome the pollution problem of using metal deoxidizer DNA. Vacuum induction melting furnace process can be precise control of chemical composition of alloy, the activity of containing oxygen, nitrogen and strong affinity of element Al, Ti, B, Zr, etc., can be controlled in the range of a few. Of low melting point metals volatile impurities, such as Pb, Bi, Sn, Sb can evaporate, which play an important part to improve the material performance. Strong induction mixing effect, can accelerate the reaction speed, for the uniform temperature of the molten pool, have the effect very much uniform chemical composition, etc.
Vacuum induction melting process has made rapid development is required for the aerospace industry and there is a close relationship between high temperature alloy material, such as aerospace, missile, rocket and atomic energy equipment needed for high temperature alloy. In not by adopting the method of vacuum smelting production of high temperature alloy, the highest working temperature is usually only 750-810 ℃; And by adopting the method of vacuum smelting production of high temperature alloy, the highest working temperature can reach 980-1090 ℃. This is mainly due to the adoption of vacuum induction melting furnace smelting nickel base and iron base, cobalt-based superalloy, O2, N2 and H2, reduces the gap elements can thoroughly remove non-metallic inclusion, as well as the removal of low melting point metal harmful impurities, such as Pb, Bi, Sb, Cu, Sn, Te, etc.