FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. ESR ingots are cast to size of 480x1675±25 mm. Ingots are turned to 470±5×1675±25 mm billets. Through central 100±5 mm diameter bore is drilled therein. Ingots-billets are heated to 1060-1090°C. Ingots-billets are pierced at helical rolling mill to sleeves sized to 460×ID295×2710-2850 mm with diameter increase Δ of 1.1-3.2% and rolling-out µ of 1.6-1.7. Sleeves sized to 460×ID295×2710-2850 mm are rolled at Pilger mill to pipe sections of 292×12×21000-22500 mm with rolling-out µ=9.2-9.3 and decrease in diameter Δ=35.9%. Seed 600-1000 mm long ends and Pilger heads not completely rolled are cut off by hot sawing saw. Pipe sections are cut to two pipes of 10500-11250 mm lengths.
EFFECT: lower metal input.
3 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| 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 |
| PRODUCTION OF HEXAGONAL PIPE BILLETS FROM LOW-PLASTICITY STEEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2541213C2 |
| PRODUCTION OF HEXAGONAL PIPE BILLETS FOR COMPACT STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2536023C2 |
| METHOD OF PRODUCING OF TUBE STOCK SIZED TO 290X12 MM TO SPECS 8-16 | 2012 |
|
RU2511199C1 |
| 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 MAKING 257+2,0/-3,0×6,0+2,0/-1,0×4300+80/-30 mm-HEXAGONAL TUBE BILLETS | 2011 |
|
RU2470723C1 |
| 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 HEXAGONAL PIPE BILLETS FOR COMPACT STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL FROM LOW-DUCTILE STEEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2541212C2 |
| PRODUCTION OF "TURNKEY" 255×5,0+1,5/-1,0×4300+80/-30 mm HEXAGONAL PIPE-BILLETS | 2013 |
|
RU2547760C1 |
| 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 |
