FIELD: process engineering.
SUBSTANCE: proposed method comprises making ingot by electroslag remelting, turning their outer surface to remove casting defects, drilling central 100±5,0 mm-dia bore, heating the ingots, piercing at helical rolling mills, rolling at Pilger mill into tube stock, cutting the latter into tube sections, their straightening and hot hexagonal tube 257+2.0/-3.0X6.0+2.0/-1.0X4300+80/-30 mm-billets. Required quality is ensured by that electroslag remelting of 470±5 "хвн." 270+5×3050±50 mm ingots from 04X14T5P2"Ф-Ш"-grade low-ductile steels is performed to make Pilger heads in tube stock rolling and seed ends from ductile carbon steels, turning and boring to make hollow ingots to be rolled to tube stock. It comprises also removing machining wastes, that is, Pilger heads and seed ends to make tube sections of ductile carbon steels. Then, tube sections are cut to tube stock to be bored and turned to tube billets. Holes are bored for pull chain for hot shaping at ductile carbon steel parts. Note here that billet sizes and machining conditions are specified at all machining steps.
EFFECT: higher quality of tubes.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAKING HEXAGONAL TUBE BILLETS SIZED TO 257+2,0/-3,0×6,0+2,0/-1,0×4300+80/-30 mm INTENDED FOR STORAGE AND TRANSPORTATION OF SPENT NUCLEAR FUEL | 2011 |
|
RU2470724C1 |
| PRODUCTION OF 255×5+1,5/-1,0×4300+80/-30 mm HEXAGONAL "TURNKEY" PIPE-BILLETS FOR COMPACTED STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL | 2013 |
|
RU2547613C1 |
| 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 |
|
RU2550032C2 |
| 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 |
|
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 |
|
RU2550033C2 |
| METHOD OF MAKING 257+2,0/-3,0×6,0+2,0/-1,0×4300+80/-30 mm-HEXAGONAL TUBE BILLETS FOR PACKED STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL | 2011 |
|
RU2470726C1 |
| 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 |
|
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 |
|
RU2542054C1 |
| METHOD OF PRODUCING OF TUBE STOCK SIZED TO 290X12 MM TO SPECS 8-16 | 2012 |
|
RU2511199C1 |
| PRODUCTION OF "TURNKEY" 255×5,0+1,5/-1,0×4300+80/-30 mm HEXAGONAL PIPE-BILLETS | 2013 |
|
RU2547760C1 |
