Abstract
An experimental unit is described for effective alloying of steel with nitrogen by plasma arc remelting. Production regimes are developed for unit operation making it possible to obtain a super-equilibrium content of nitrogen (up to 0.22%) in remelted metal with action of a plasma flow at a temperature of ≈ 7000 K in molten metal with the metal temperature in the arc-binding zone of up to ≈ 2700 K. The technology of remelting of 55Kh20G9N4 steel facilitates grain refinement, an increase in strength properties, ductility, and overall energy for failure, wear resistance under dry friction conditions and a reduction in the corrosion rate.
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