FIELD: metallurgy.
SUBSTANCE: the invention relates to the method of producing seamless machined pipes with 530×13-17 mm size from steel of "08Х18Н10-Ш" grade. The method includes casting hollow ingots by electroslag remelting size 740×inner500×3,200±50 mm, boring and refacing in billet ingots with size of 720×inner520×3,200±50 mm, heating the billet ingots in reheat furnaces to the temperature of 1,260-1,270°C, delivery of them ingot trolley blowing compressed air or inert gas, lubricant ingot billets inside the two ends by the graphite with a mixture of sodium chloride in a ratio of 50/50 weight 2,000-2,500 g, transportation of hollow billet ingots to the upstream side of the Pilger mill, rolling at Pilger mill into stock with size 550×35×8,600-9,000 mm, cutting of process wastes: straightening on a six-roll straightening machine, heat treatment in the form of austenitizing, cutting metal recycling pipe into two pipes of equal length, machining: boring and turning of hot-rolled stock pipes with size 550×35×4,300-4,500 mm into commercial pipes with size 530×13-17×4,300-4,550 mm.
EFFECT: reduced metal consumption.
2 cl, 1 tbl
