Method of producing pig Welded pipe billets from an alloy based on titanium and ROLLING OF THEM BIG PIPE and an average diameter

摘要

1. A process for the production of pig welded round billets of alloys based on titanium and cold rolling are pipes of large and medium diameters, comprising casting ingots vacuum arc remelting, machining, turning of the ingots into the preform, heating the preforms in the protective medium to plasticity temperature, rolling billets into slabs, slab heating in the shielding medium up to plasticity temperature, rolling the slab in the slab sheets, cutting the sheets on the plate-fold length, planer sheets of width edges of the sheets to prepare binding arch forming blanks on rollers in pipe blanks followed by welding the longitudinal edges in a protective atmosphere of argon, rolling the metal recycling welded tube blanks in cold pipe maximum diameter, wherein the ingot of vacuum arc remelting size of 620 × 1750 mm grind a workpiece 600 × size 1750 mm, the preform is heated in a protective atmosphere to a temperature ductility and rolled into slabs size of 1200 × 140 × 2940-2950 mm, the slabs were heated in a protective atmosphere to a temperature ductility and rolled into slabs ra sheets mer 1550 × 16 × 20000 mm, which are cut into multiples of 4000-4500 mm length, produce planer sheet edges on the width of 1475-1507 mm, the metal recycling pipe molding preforms on roll size 470-480 × 16 mm × 4000-4500, bidirectional TIG with multipass weld burnishing remelting and rolled on the mill at 450 HPT commodity or cold rolled steel making pipe size 426 × 10-12 mm followed perekatkoy them mills HPT and HPT 450 in pipe 250 routes 426 × 8 - 377 × S1 - 325 × S2 - 273 × S3 - 219 × S4 - 168 × S5 and 159 mm × S6. ! 2. A method according to claim 1, characterized in that the steel making n