Hole Production in High-Strength Steels by Plasma Incision and Reaming

Abstract

Hole production in high-strength steels (in particular, manganese steels) by plasma incision and reaming is considered. Thermal conditions are identified for preliminary plasma incision of holes with subsequent reaming. Phase and structural transformations in the surface layer after plasma treatment greatly improve the efficiency of subsequent cutting. Additional plasma heating of the machined hole surface after plasma incision is proposed.