FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Hollow ESR ingots are bored and turned to 500±2×ID330±2×2750±50 mm hollow ingots-billets for removal of cavities and flux traces. Said ingots-billers are heated to ductility temperature and rolled at Pilger mill to rerolled hot-rolled stalks sized to 325×12×22400-23300 mm. Rolling is performed with smooth increase in feed of said ingots-billets to deformation source with weed of 0 to m"уст." over pipe length equal to 1800-2400 mm or 1.5-2.0 of feeder rollback. Two thirds of ingot-billet length are rolled to 16000-17000 mm long stalk at feed m"уст.".=12-14 mm. Ingot-billet remainder is rolled at smooth feed increase from m"уст." to (1.2-1.25) m"уст.". Stalk is cut to lengths of 7450-7750 mm, bored and turned to rerolled pipes sized to 321×8×7450-7750 mm. Pipes are rolled at CPR 450 mill to rerolled cold-rolled pipes sized to 284.8×6x10500-11000 mm, cut to pipe billets sized to 284.8×6×5250-5500 mm and shaped to hexagonal pipe billets.
EFFECT: balanced plastic properties and ferrite grain size over stalk length.
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| Title | Year | Author | Number |
|---|---|---|---|
| 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 HEXAGONAL PIPE BILLETS FOR COMPACT STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2536023C2 |
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|
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| 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 |
| 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 FOR PRODUCING CONVERSION TUBES OF LOW DUCTILE BORON STEEL | 2006 |
|
RU2297893C1 |
| PRODUCTION OF "TURNKEY" 255×5,0+1,5/-1,0×4300+80/-30 mm HEXAGONAL PIPE-BILLETS | 2013 |
|
RU2547760C1 |
| METHOD FOR PRODUCING INGOT-BLANKS BY ELECTROSLAG REFINING OF LOW-DUCTILE STEEL CONTAINING BORON AND FOR ROLLING TUBES OF SUCH BLANKS IN TUBE ROLLING PLANTS WITH PILGER MILLS FOR FURTHER CONVERSION OF TUBES TO HEXAHEDRAL TUBE-BLANKS FOR COMPACTED STORAGE OF WASTE NUCLEAR FUEL | 2006 |
|
RU2317865C2 |
| 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 |
| PRODUCTION OF 255±2,0×5,0+1,5/-1,0×4300+80/-30 mm HEXAGONAL "TURNKEY" PIPE-BILLETS FOR COMPACTED STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL | 2013 |
|
RU2557383C2 |
