METHOD FOR PRODUCING seamless cold tubing SIZE 114,3 × 6,88 × 9000-10700 mm and pig Pipe size 132.1 × 18 mm FOR MANUFACTURING couplings CRA HN30MDB MARK-III for the extraction of gas and gas condensate in hydrogen sulfide MEDIA

摘要

1. A process for the production of seamless cold pump - tubing size × 6.88 × 114.3 mm 9000-10700 and metal recycling pipe sizes 132,1 × 18 mm for the manufacture of sleeves made of corrosion-resistant alloy brand HN30MDB-III for gas and gas condensing in hydrogen sulfide environments comprising ESR ingot casting size of 480 × 1200 mm, refacing the size of 460 × 1200 mm, heated to plasticity temperature, forging in the forging size of 290 × 3000 mm ukovom not less than 2.5, refacing forged into billets measuring 273 × 3000 mm, drilling a central hole in the workpieces I followed bore diameter at 213 mm, rolling of mother tubes - preforms size 273 × 30 × 3000 mm in rolling mills HPT commodity pipe size × 6.88 × 114.3 mm 9000-10700 routes - 30┄219 273 × × × 18 24┄180 ┄140 × 12┄114,3 × 6,88 mm with a relative reduction of the wall, respectively, δ = 20,0%, δ = 25,0%, δ = 33,4% and δ = 42,7%, and metal recycling pipe blanks size 273 × 32 × 3000 mm in steel making coupling blank size 18 mm × 132.1 routes - 273 × × 32┄219 27┄168 22-132,1 × × 18 mm relative reduction δ = 15 6%, δ = 18.5%. and δ = 18.2%, wherein the cold-tubing size of 114.3 × 6.88 mm × 9000-10700 made from machined metal recycling hot rolled round billets measuring 273 × 25 × 4750 mm routes - 273 × 25┄ 219 × 20180 × 15-140 × 6.88 × 10-114,3 with relative reduction of wall δ = 20,0%, δ = 25,0%, δ = 33,3% and δ = 31,2% or of mechanically treated hot-rolled round billets measuring 245 × 16 × 245 × 2800 and 16 × 5200 mm routes 16-219 -245 × × × 13┄168 11┄140 9┄114,3 × × 6.88 mm with a relative reduction of wall δ = 18,8%, δ = 15,4%, δ = 18,2% and δ = 23,6%, and steel making coupling of the first pipe yachekatanyh machined metal recycling round billets measuring 300 × 30 × 3800 mm