FIELD: metallurgy.
SUBSTANCE: invention relates to a 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. Hollow ESR ingots with the size of 490×in290×2850±25 mm are turned and bored into hollow cakes with the size of 480×in300×2850±25 mm, heated up to the temperature of 1130-1150°C, rolled on pilger mills into semi-finished hot-deformed pipe workpieces with the size of 338×25×11200±100 mm in the gauge of 340 mm on mandrels with diameter of 282/286 mm with drawing µ=4.35, swaging as to diameter of Δ=29.2% and supply to deformation zone m=18-20 mm. Process wastes are removed from pipe workpieces by means of a hot cutting saw, straightened in a six-roll straightening machine, cut into two pipe workpieces with the size of 338×25×5600±50 mm, bored and turned into pipe workpieces with the size of 325×12×5600±50 mm, re-rolled on ХПТ450 and ХПТ250 mills along routes of 325×12×5600±50 - 273×8×9600±85 - 250×5×16300±150 mm. Pipes with the size of 250×5×16300±150 mm are cut into pipe workpieces with the size of 250×5×9200±75 mm and 250×5×7100±75 mm, which are rolled on ХПТ250 mill into pipe workpieces with the size of 202×3.5×15800±130 and 202×3.5×12100±130 mm respectively, shaped in a shaping mill 400 into hexagonal pipes with flat-to-flat dimension of 181.8±0.4×3.5+0.3/-0.2×15800±130 mm and 181.8±0.4×3.5+0.3/-0.2×12100±130 mm and cutting of pipes is performed into equal hexagonal pipe workpieces with the size of 181.8±0.4×3.5+0.3/-0.2×3750+20/-0 mm.
EFFECT: production of hexagonal pipe workpieces with the specified geometrical flat-to-flat dimensions and reducing coefficient of metal consumption.
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 |
| 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 |
|
RU2550045C2 |
| 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 |
| 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 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 |
| 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 |
| 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 |
| PRODUCTION OF HEXAGONAL PIPE BILLETS FOR COMPACT STORAGE AND TRANSPORTATION OF USED NUCLEAR FUEL WITH BORON CONTENT OF 1,3-3,5% | 2013 |
|
RU2536023C2 |
| 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 |
