Electrode Induction Melting Gas Atomization Equipment

Working principle of electrode induction melting gas atomization equipment: Under vacuum or inert gas protection, the slowly rotating feedstock rod is heated by high frequency induction coil and melted inductively and continuously in the absence of crucible. Then the molten metal falls free, flows into atomization system and is crushed into a large number of small liquid droplets by high pressure inert gas from atomizer spray plate. Then small liquid droplets are solidified into spherical powders in flight.

Electrode induction melting gas atomization equipment can produce refractory metal powder and active metal powder with spherical shape and high purity. .

Advantages of electrode induction melting gas atomization technology:

① Since the raw material is not in contact with the crucible and the guide tube in melting process, no impurities are introduced in the melting process, and the material will not contaminated. EIGA technology is suitable for manufacturing active material powder and refractory metal powder.

② Low consumption of energy

③ Electrode induction melting gas atomization tecnology can prepare tungsten, molybdenum, titanium, tungsten carbide, alumina, silicon oxide, zirconia and other high temperature refractory metals and oxide powders;

④ Powder made by this technology is with regular shape, high spheroidization, smooth surface and good flowability; and density and bulk density of powder are increased.

We can provide multi different capacities of electrode induction melting gas atomization equipment, and accept customization on special demands. 

Electrode induction melting gas atomization equipment is composed of raw material rod feeding system, high frequency induction heater, high frequency power supply, high-pressure gas atomizer, high-pressure gas source and control system, atomization tower, vacuum system, powder separation and collection system, water cooling system, electrical control system, etc.

Electrode induction melting gas atomization technology (EIGA) is a process in which prefabricated alloy rods are used as electrodes, and rotating rod electrodes are melted by induction melting and atomized. From the working principle of electrode induction melting gas atomization technology, it can be seen that the advantage of EIGA method is that it does not need to use a crucible for melting, it is a crucible less melting technology, which can reduce doping of other metals or non-metallic impurities in the melting process, and greatly improve purity of the final powder. However, the shortcomings of the EIGA technology are also obvious. Production and procurement costs of prefabricated alloy bars are higher than alloy ingot. Composition uniformity of the bar alloy has a great impact on the chemical composition of powder after atomization. It is difficult to control melting rate of the metal bar, metal liquid "cut off" phenomenon and even "broken rod" phenomenon are usually happen in the production process.