METHOD OF MANUFACTURING SEAMLESS COLD-DEFORMED HIGH-STRENGTH PIPES FROM CHROMIUM-NIKEL ALLOY

摘要

FIELD: metallurgy.;SUBSTANCE: method of manufacturing seamless cold-deformed high-strength pipes includes the manufacture of hot-formed tubes from a chromium-nickel alloy with a regulated content of constituent elements and reinforced processing of pipes. Reinforced processing of pipes includes preliminary plastic deformation in one or several passes with a degree of not more than 35% per pass, hardening at the temperature not lower than 1020°C and final plastic deformation with a regulated degree of deformation, while plastic deformation is carried out at room temperature.;EFFECT: stable obtaining the normalized complex of mechanical properties of high strength group metal pipes and improving the surface quality of pipes.;1 tbl