JPS6425909A - Powder production apparatus - Google Patents

Abstract

PURPOSE:To efficiently and stably obtain high purity powder having the desirable particle size at the apparatus having simple mechanism by using high frequency AC powder source to arc forming at the time of producing the powder by melting the end part generating the arc between electrodes and dropping the drip on a high speed rotating disk. CONSTITUTION:By supplying the electric power to the electrodes 51 from the high frequency AC power source 62, the arc 52 is formed and the drip 53 produced by melting the faced end parts of the electrodes 51 is dropped on the disk 54 having side wall 54a during rotating at high speed and scattered with centrifugal force and cooled with the atmospheric gas for cooling, to make the powder 55. By using the above power source, even in case the inner pressure in the chamber 57 is high, the arc 52 is stabilized and the shapes of both end parts of the electrodes 51 and the melting states are symmetrical and the dropping position of the drip 53 can be accurately controlled. Therefore, the desired powder having high purity can be efficiently obtd. by the apparatus having simple mechanism.