Abstract

An efficient low-temperature plasma generator with direct arc for plasma remelting was developed and studied with direct and reverse polarity. It has an expanding nozzle channel and the remelted metal acts as a second electrode. An efficiency of ≈90% and a long service life with a current strength of up to 200 A were obtained. It is shown that the nozzle increases arc stability at an opening angle of 12°. It is established that a super-equilibrium nitrogen content (up to 0.22%) in the molten metal can be obtained.

中文翻译：

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带有直接电弧的低温等离子发生器，用于等离子重熔

摘要

研发了一种高效的带有直接电弧的低温等离子体发生器，用于等离子体重熔，并具有正负极性。它具有扩大的喷嘴通道，重熔的金属充当第二电极。获得了≈90％的效率和较长的使用寿命，电流强度高达200A。示出了喷嘴在12°的打开角度下增加了电弧稳定性。可以确定的是，可以在熔融金属中获得超平衡氮含量（最高0.22％）。