FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. ESR ingots sized to 480×1800±25 mm are produced from low-ductility "04Х14Т5Р2Ф-Ш"-grade steel with bottom and shrinkage parts of ductile carbon steels, their height making 0.03-0.04 and 0.13-0.1. Ingots are turned to ingots-billets sized to 465±5×1800±25 mm to bore through central 100±5 mm-dia hole. They are heated to 1030-1050°C. Then, they are pierced at helical tolling mill to bimetal 460×ID290×2720-2940 mm sleeves with diameter reduction Δ of 0 to 2.13% and rolling-out µred. of 1.53 to 1.61. Said sleeves are rolled at Pilger mill to rerolled pipe sets sized to 287×11×25600-27800 mm with rolling-out µn=10.50 and diameter reduction Δ=36.96%. Machining wastes are removed therefrom to produce 550-600 mm-long pipe ends of ductile carbon steels on seed side and cut to rerolled 10250-11000 mm-long pipes. First rerolled pipe after thermal straightening is cut on the side of said end to 5200±50 mm-long pipe. Second pipe is cut to two equal-size lengths, turned and bored to cylindrical; pipe-billets sized to 281.1±2×5+1.5/-1.0×52500-5500 mm shaping to hexagonal pipe-billets.
EFFECT: lower metal input.
2 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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RU2545954C1 |
| PRODUCTION OF REROLLED 290×12 mm PIPES AT PRU 8-16" WITH PILGER MILLS FROM ESR INGOTS-BILLETS OF LOW-DUCTILITY "04Х14Т3Р1Ф-Ш"- AND "04Х14Т5Р2Ф-Ш"-GRADE STEELS WITH BORON CONTENT OF 1,3-3,5% FOR FABRICATION OF HEXAGONAL TURNKEY PIPE BILLETS SIZED TO 257+2,0/-3,0×6,0+2,0/-1,0×4300+80/-30 mm FOR RACKS OF NUCLEAR POWER STATION USED FUEL COOLING POND | 2013 |
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| METHOD OF PRODUCING OF TUBE STOCK SIZED TO 290X12 MM TO SPECS 8-16 | 2012 |
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| METHOD OF PROCESS PIPES PRODUCTION OF SIZE 284×11 mm OUT OF SOLID BLANK INGOTS TO MANUFACTURE HEX BLANK PIPES WITH TURNKEY SIZE 252,6×5,0+1,5/-1,0×4300+80/-30 mm FOR TIGHT STORAGE AND TRANSPORTATION OF SPENT NUCLEAR FUEL | 2013 |
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RU2547363C1 |
| METHOD OF MAKING 290×12 mm-TUBE STOCK FROM OF SOLID INGOTS FROM ELECTROSLAG REMELTING OF 04×14T5P2"Ф-Ш" -GRADE LOW-DUCTILE STEEL | 2011 |
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RU2470725C1 |
| PRODUCTION OF REROLLED 292×12 mm PIPES AT PRU 8-16" WITH PILGER MILLS FROM ESR INGOTS-BILLETS OF LOW-DUCTILITY "04Х14ТЗР1Ф-Ш"- AND "04Х14Т5Р2Ф-Ш"-GRADE STEELS WITH BORON CONTENT OF 1,3-3,5% FOR FABRICATION OF HEXAGONAL TURNKEY PIPE BILLETS SIZED TO 257+2,0/-3,0×6+2,0/-1,0×4300+80/-30 mm FOR STORAGE AT RACKS OF NUCLEAR POWER STATION USED FUEL COOLING POND AND ITS TRANSPORTATION | 2013 |
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RU2550033C2 |
| PRODUCTION OF SEAMLESS REROLLED PIPES SIZED TO 289×11,5×26000-27000 AND 290×12×26000-27500 mm AT PRU 8-16" WITH PILGER MILLS FROM ESR INGOTS-BILLETS OF LOW-DUCTILITY "04Х14Т3Р1Ф-Ш" AND "04Х14Т5Р2Ф-Ш"-GRADE STEELS WITH BORON CONTENT OF 1,3-3,5% FOR PRODUCTION OF HEXAGONAL PIPES-BILLETS SIZED TO TURNKEY BASIS OF 257+2,0/-3,0×6,0+2,0/-1,0×4300+80/-30 mm FOR COMPACT STORAGE IN NUCLEAR POWER STATION COOLING POND AND TRANSPORTATION OF USED NUCLEAR FUEL | 2012 |
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RU2530085C2 |
| METHOD OF HEXAGONAL PIPE BLANC PRODUCTION OF TURNKEY SIZE 252,6×5+1,5/-1,0×4300+80/-30 mm FOR COMPACT STORAGE AND TRANSPORTATION OF SPENT NUCLEAR FUEL | 2013 |
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RU2542054C1 |
