METHOD FOR PRODUCTION OF TUBES Improving the quality of stainless steel grade W-08X18H10T FOR OBJECTS OF NUCLEAR POWER

摘要

1. A process for the production of pipes of stainless high-quality steel 08Cr18Ni10Ti-III for nuclear facilities comprising electroslag remelting ingot casting, drilling a central hole diameter of ingots 100 ± 5,0 mm, heating the ingots to a temperature ductility, firmware ingots oblique rolling mill a sleeve, rolling of mother tubes for pilger mill segment technological wastes - pilger seed heads and ends of the hot saw cutting, straightening of pipes, the thermal treatment - austenitization, mechanical eskuyu processing - refacing and the bore size of the finished with roughness outer and inner surfaces no more Ra 10,0 mm, characterized in that the rolling of mother tubes to produce a pilger process roll mills on HPT. ! 2. A method according to claim 1, characterized in that the hot-rolled steel making pipe mechanically treated - bore and grind, machine tools with the tracking system, in steel making tube-metal substrate with a readout, the value of which is determined from expressions! ΔSv.p. = KΔSv.c.,! ΔSn.p. = K1ΔSn.c.,! where ΔSv.p. - the quantity of metal removed layer for boring the proposed mm technology; ! ΔSv.c. - the quantity of metal removed layer by a bore substantially technology mm; ! K = (0.5-0.6) - magnitude reduction ratio removes metal layer at the bore, larger values ​​which belong to the pipes of large diameters; ! ΔSn.p. - the quantity of metal removed layer in the turning of the proposed mm technology; ! ΔSn.c. - the quantity of metal removed from the turning layer substantially technology mm; ! K1 = (0,4-0,5) - magnitude reduction ratio of metal removed from the turning bed,