FIELD: metallurgy.
SUBSTANCE: invention refers to metallurgy. The method involves casting of ingots by electroslag remelting with a diameter of 490×in290 mm from difficult-to-form steel grade 16×12MMVSFBR-Sh (EP823-Sh), their turning to hollow cakes with the size of 480×in300×3000 mm, the length of which is determined as per mathematical relationship. Cakes are heated to the ductility temperature and rolled on pilger mills using backing carbon rings into tubes with the size of 338×25×11800 mm with drawing µn=4.35, by swaging as to diameter Δ=29.2%. Stock tubes are straightened in a six-roll mill, cut into two tubes, bored and turned along the route into stock tubes with dimension of 194×2.5×13800 mm and 194×2.5×14000 mm and shaped in Mill 400 into hexagonal tubes with flat-to-flat dimension of 175±0.4×2.5+0.3/-0.2×13800 mm and 175±0.4×2.5+0.3/-0.2×14000 mm. End crops are removed and tubes are cut into hexagonal tubes of specific length.
EFFECT: reduction of a metal consumption coefficient.
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| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO PRODUCE HEXAHEDRAL STOCK PIPES WITH FLAT-TO-FLAT DIMENSION 175×2,5+0,3/-0,2×2680+20/-0 mm FROM STEEL OF GRADE "16Х12МВСФБР-Ш (ЭП823-Ш)" FOR FAST FEEDER REACTORS | 2013 |
|
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| MANUFACTURING METHOD OF SEMI-FINISHED HOT-ROLLED MECHANICALLY PROCESSED PIPES WITH SIZE OF 325×12 mm WITH INCREASED ACCURACY AS TO DIAMETER AND WALL FROM STEEL GRADES "12Х12М1БФРУ-Ш", "16Х12МВСФБР-Ш" FOR REROLLING ON "ХПТ" 450 AND "ХПТ" 250 MILLS INTO SEMI-FINISHED PIPE WORKPIECES WITH SIZE OF 202±1,2×3,5+0,3/-0,2 mm AND FURTHER SHAPING INTO HEXAGONAL PIPE WORKPIECES WITH FLAT-TO-FLAT SIZE OF 181,8±0,4×3,5+0,3/-0,2×3750+20/-0 mm AND 175±0,4×2,5+0,3/-0,2×2680+20/-0 mm FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
|
RU2550041C2 |
| MANUFACTURING METHOD OF SEMI-FINISHED HOT-ROLLED MECHANICALLY PROCESSED PIPES WITH SIZE OF 325×12 mm WITH INCREASED ACCURACY AS TO DIAMETER AND WALL FROM STEEL GRADES "12Х12М1БФРУ-Ш" AND "16Х12МВСФБР-Ш" FOR REROLLING ON "ХПТ" 450 AND "ХПТ" 250 MILLS INTO SEMI-FINISHED PIPE WORKPIECES WITH SIZE OF 202±1,2×3,5+0,3/-0,2 mm, 194±1,2×2,5+0,3/-0,2 mm AND FURTHER SHAPING INTO HEXAGONAL PIPE WORKPIECES WITH FLAT-TO-FLAT SIZE OF 181,8±0,4×3,5+0,3/-0,2×3750+20/-0 mm AND 175±0,4×2,5+0,3/-0,2×2680+20/-0 mm FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
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| MANUFACTURING METHOD OF COLD-ROLLED MARKETABLE PIPES WITH SIZE OF 170±1,5×3±0,25×370 mm WITH INCREASED ACCURACY AS TO WALL FROM STEEL GRADE "16Х12МВСФБР-Ш" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
|
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| MANUFACTURING METHOD OF COLD-ROLLED MERCHANTABLE TUBES WITH SIZE OF 170×370 mm FROM STEEL GRADE "16Х12МВСФБР-Ш (ЭП823-Ш)" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
|
RU2545944C2 |
| MANUFACTURING METHOD OF HEXAGONAL PIPE WORKPIECES WITH FLAT-TO-FLAT DIMENSION OF 181,8±0,4×3,5+0,3/-0,2×3750+20/-0 mm FROM STEEL GRADE "12Х12М1БФРУ-Ш" FOR FAST NEUTRON NPP REACTORS | 2013 |
|
RU2545949C2 |
| DIMENSIONS OF 150(1200 MM WITH INCREASED ACCURACY AS TO DIAMETER AND WALL FROM STEEL GRADE "12-12¦1L+¦L-+ (¦¦ 450L-+)" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
|
RU2542142C1 |
| PRODUCTION OF SEAMLESS COLD-FORMED OIL-WELL TUBING SIZED TO 168,3×10,6×5000-10000 mm | 2013 |
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RU2614972C1 |
| PRODUCTION OF 219×8-50 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS FROM ESR INGOTS OF "10Х9МФБ-Ш"-GRADE STEEL | 2013 |
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