METHOD FOR PRODUCING bimetallic tubes of steel grades (+ 10GN2MFA 08X18H10T) Size VN.279 × 36 (351 × 36) and VN.346 × 40 (426 × 40) mm INTERNAL STEEL 08X18H10T cladding layer thickness of 7 ± 2 mm for nuclear power facilities

摘要

1. A method of producing bimetallic tubes steels (10GN2MFA 08Cr18Ni10Ti +) vn.279 size 36 × (351 × 36) and vn.346 40 × (426 × 40) mm in inner plating layer thick steel 08Cr18Ni10Ti 7 ± 2 mm for the objects nuclear energy, comprising the casting of ingots ESR of steel 10GN2MFA size of 550 × 1600 ± 50 and 580 × 1 900 ± 50 mm, drilling bullion central hole diameter of 100 ± 5 mm, heat the ESR ingot to plasticity temperature, firmware ingots into mill helical rolling the sleeve vn.245 size 550 × 600 × 1810-1930 and 1920-2030 × × vn.235 mm diameter on mandrels 230 and 220 mm, the bore and the turning of the sleeves in the sleeve-blank size of 520 + 3.0 / -5,0hvn.265 ± 5.0 × 1550 ± 50 and 570 + 3.0 / -5,0hvn.255 ± 1700 ± 5.0 × 50 mm , insert-molded shells - workpieces to install an ESR steel 08Cr18Ni10Ti, removal of bottom parts bimetallic ingots anode-mechanical cutting, drilling a bimetallic ingots measuring 520 + 3.0 / -5,0hgr.265 ± 5.0 ± 0 × 1450 and 570 + 3 0 / -5,0hgr.255 ± 1600 ± 5.0 × 50 mm through the central hole diameter of 100 ± 5 mm, boring bars bimetallic - size workpieces 520 + 3.0 / -5,0hgr.265 ± 5,0hvn. 100 ± 1 450 ± 5.0 × 50 mm ingot - blank size 520 + 3.0 / -5,0hgr.265 5,0hvn.160 ± ± 1450 ± 5.0 × 50 mm, heating bimetalliche Sgiach ductility of ingots to a temperature in the bars firmware bimetallic helical mill rolling in the sleeve size and 540hvn.300 × 1650-1770 600hvn.365 × 2090-2220 mm, the rolling of sleeves in pilger in groove 383 and 464 mm on the mandrel 271 / 272 and 337/338 in steel making pipe size 371 × 50.5 × 446 × 4200-4500 and 4700-5100 × 54 mm, heat treatment, straightening, selection of samples for mechanical testing, machining - boring and turning of tubes in metal recycling commodity vn.279 hot tube size 36 × × × vn.346 4200-4500 and 4700-5100 × 40 mm with a thickness of the cladding layer