FIELD: metallurgy.
SUBSTANCE: method involves hollow ESR ingots casting, their turning, reeling, hot and cold rolling at PRM 8-16" with Pilger mills and at CRM 450 mill, and heat treatment. Sequential processing of workpieces with dimensions and processing modes regulated at every stage of production is implemented.
EFFECT: obtaining of seamless cold-rolled pipes of high quality and increased length, reduced consumable metal coefficient at redistribution of hollow ingot to ESR billet.
2 cl, 1 tbl
Authors
Dates
2017-03-21—Published
2016-03-22—Filed