FIELD: metallurgy.
SUBSTANCE: method for production of centrifugally cast thin-wall pipes-billets with size of 288×12×5,500 mm from steel with boron content from 2.01 to 3.5% for production of hexagonal pipes-billets with "turnkey" size 257+1.5/-1.0×6±1.0×4,300+80/-20 mm and racks for compacted storage in cooling pools of nuclear power plants and transportation of spent nuclear fuel includes pouring steel into a chill mould, removing a billet and cooling on a rotator, cutting, boring, turning and profiling into hexagonal pipes-billets. Chill mould is heated to 230-280 °C, 0.8-1.2 mm of non-stick lubricant is applied on the inner surface and the casting part of the chill mould is cooled to achieve a uniform temperature drop along length of 30-50 °C from filling end to non-filling end. Cryolite, ferrocerium and aluminium are fed into the ladle in amount of 4, 2 and 1 kg per ton of steel respectively, mixed for 30 s and poured into a chill mould. Chill mould is rotated with a frequency corresponding to a gravitational coefficient of 200-250.
EFFECT: increasing productivity by reducing the steel consumption coefficient during centrifugal casting.
2 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCTION OF CENTRIFUGALLY CAST THIN-WALL PIPES-BILLETS WITH SIZE OF 288X12X5,500 mm FROM STEEL WITH BORON CONTENT FROM 1.3 TO 1.8% FOR PRODUCTION OF HEXAGONAL PIPES-BILLETS WITH "TURNKEY" SIZE 257+1.5/-1.0X6±1.0X4300+80/-20 mm AND RACKS FOR COMPACTED STORAGE IN COOLING POOLS OF NUCLEAR POWER PLANTS AND TRANSPORTATION OF SPENT NUCLEAR FUEL | 2024 |
|
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|
RU2550032C2 |
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|
RU2511199C1 |
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|
RU2530085C2 |
| 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 |
|
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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 |
