HOW LONG hot rolled seamless pipe size 465 × 75 mm for steam boilers, steam pipelines and manifolds applications with high and supercritical steam parameters of ingots ESR steel grade 10H9MFB-W

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to metallurgy. This process comprises smelting of hollow ingots The latter are bored and turned to hollow ingots-billets Said ingots-billets are heated to ductility temperature Rolling of hollow ingots-billets at Pilger mills to commercial pipes with feeding of Pilger heads onto rider carbon rings Then, pipes are heat-treated, etched, repaired and subjected to ultrasound control.;EFFECT: increased length of pipes, electric power savings, lower metal input at conversion of ESR hollow ingot-billet to commercial pipe.;6 cl, 1 tbl