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.
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Authors
Dates
2017-05-25—Published
2016-01-19—Filed