FIELD: metallurgy.
SUBSTANCE: invention relates to a manufacturing method of semi-finished hot-rolled mechanically processed pipes with size of 325×12 mm with increased accuracy as to diameter and a wall from steel grades “12Х12М1БФРУ-Ш” and “16Х12МВСФБР-Ш” for their rerolling on ХПТ 450 and ХПТ 250 mills into semi-finished pipes with sizes of 202±1.2×3.5+0.3/-0.2 mm and 194±1.2×2.5+0.3/-0.2 mm and further shaping into hexagonal pipe workpieces with flat-to-flat sizes 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. Electroslag remelting ingots from steel grade “12Х12М1БФРУ-Ш” are cast with the size of 485×1650±25 mm, and from steel grade “16Х12МВСФБР-Ш” with the size of 485×1600±25 mm, turned and bored into cakes with dimensions of 470×100×1650±25 and 470×100×1600±25 mm, heated to the temperature of 1120-1140°C, pierced on a cross rolling mill into shells with dimensions of 480×in315×2560±40 and 480×in315×2500±40 mm; shells are rolled on pilger mills into semi-finished hot-deformed pipes with dimensions of 338×28×8500±150 and 338×28×8000±150 mm, pipes are straightened in a six-roll straightening machine, cut into two pipe workpieces with dimensions of 338×28×4250±75 and 338×28×4000±75 mm, bored and turned into pipe workpieces with dimensions of 325×12×4250±75 and 325×12×4000±75 mm.
EFFECT: method allows reducing metal consumption factor.
5 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| 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 |
| 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 |
|
RU2547362C2 |
| 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 |
| MANUFACTURING METHOD OF HEXAGONAL STOCK TUBES WITH FLAT-TO-FLAT DIMENSION OF 175±0.4×2.5+0.3/-0.2×2680+20/-0 mm FROM STEEL GRADE "16Х12МВСФБР-Ш" FOR FAST NEUTRON NPP REACTORS | 2013 |
|
RU2542144C1 |
| PRODUCTION OF HEXAGON PIPE BILLETS OF "TURN KEY" 181,8×3,5+0,3/-0,2×3750+20/-0 mm OF "12Х12М1БФРУ-Ш (ЭП450У-Ш)"-GRADE STEEL | 2013 |
|
RU2547053C1 |
| 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 |
|
RU2545970C2 |
| 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 COLD-ROLLED MARKETABLE TUBES WITH DIMENSIONS OF 150×2×1200 mm WITH INCREASED ACCURACY AS TO DIAMETER AND WALL FROM STEEL GRADE "12Х12М1БФРУ-Ш" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
|
RU2542147C1 |
| 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 |
|
RU2545950C2 |
