FIELD: rolled tube production, namely production of conversion tubes of low-ductile steel with boron content 1.3 -1.8%, possibly manufacture of seamless hot rolled conversion tubes in plants with pilger mills.
SUBSTANCE: method comprises steps of heating drilled ingots of electroslag refining till yielding temperature; piercing them to sleeves in piercing mill; rolling tubes in pilger mill. Feed value for guiding tube in pilger mill is equal to 0.5 -0.6 of feed value of stable rolling process along length of tube equal to 1.0 -1.2 of rolling back path of feeding apparatus. Rolling-around and after- rolling steps are realized at feed value 0.6 - 0.75 along length of tube equal to 0.5 -0.75 of rolling back path of feeding apparatus.
EFFECT: lowered number of rejected pieces according to their end flaws such as cracking and fissure, reduced factor of metal consumption at conversion process of ingot of electroslag refining to conversion tube blank, lowered cost of final product - hexahedral steel tubes.
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| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CONVERSION PIPE MANUFACTURING IN PIPE ROLLING PLANTS WITH PILGER MILLS OF LOW-ELASTICITY STEEL WITH BORON CONTENT OF 1,3-1,8% | 2006 |
|
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| METHOD FOR MAKING CONVERSION TUBES OF LOW-DUCTILITY BORON-CONTAINING STEEL | 2003 |
|
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| PRODUCTION OF HEXAGONAL PIPE BILLETS FROM LOW-PLASTICITY STEEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2541213C2 |
| METHOD FOR PRODUCING CONVERSION TUBES OF LOW DUCTILE BORON STEEL | 2006 |
|
RU2297893C1 |
| 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 |
| 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 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 |
| 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 PRODUCING OF TUBE STOCK SIZED TO 290X12 MM TO SPECS 8-16 | 2012 |
|
RU2511199C1 |
