METHOD FOR PRODUCING COLD-MARKETING pipe size 170 × 3 × 370 mm made of steel grade 16H12MVSFBR-W (EP823-W) for the reactor of new generation FAST NEUTRON

摘要

1. A process for the production of cold-rolled tubes commodity size 170 × 370 × 3 mm or cut length in the range 2000-6000 mm high accuracy of the wall of the steel 16H12MVSFBR-SH (EP823-WB) for the new generation of fast breeder reactors, comprising a casting ingot electroslag remelting size of 485 × 1540 ± 25 mm, refacing bars in billet ingots measuring 470 × 1540 ± 25 mm, drilling ingots, billets central hole diameter of 100 ÷ 5 mm, heated to plasticity temperature firmware to mill helical rolling on a mandrel 300 mm in diameter liners 480hvn.315 size s × 2400 ± 40 mm in diameter with the rise δ = (2,1-2,2)% stretch μ = 1,55-1,56, rolling the sleeves at pilger mills in the steel making Hot tube billet size 344 × 31 × 6600 ± 100 mm in caliber of 351 mm diameter cone Dornach 283/287 mm stretch μ = 3,28-3,29, swaging diameter Δ = (28,3-28,4)% feeding sleeves and a deformation zone m = 20-22 mm, a saw segment hot cutting process waste - pilger seed heads and ends, straightening of pipes, pipe cutting of two multiple of 3300 ± 50 mm, the machining - boring and turning with the removal meta la of the outer and inner surfaces of 9.5 mm in the steel making pipe size 325 × 12 × 3300 ± 50 mm with a tolerance of ± 1.0 of the diameter and wall thickness of ± 12.5%, hot rolling peredelnyh machined on pipe mills and HPT450 HPT250 in steel making cold pipe routes 325 × 12 × 273 --- --- 8 219 × 5 mm, cold rolling the metal recycling pipe size 219 × 5 mm in size product pipe 3 × 170 × 370 mm cut length, or in the range 2000- 6000 mm, with a tolerance of diameter ± 0.8% (± 1.36 mm) and a wall of + 12.5 / -10.0% (+ 0.38 / -0.3 mm), characterized in that the electroslag remelting ingots from