FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. ESR 620×1700±25 mm ingots are turned to 600×1700±25 mm ingots-billets. Through central 100±5 mm diameter bore is drilled therein. Said ingots-billets are turned to 600±5.0×out200±5.0×1700±25 mm size and heated to 1260-1270°C. Said ingots-billets are pierced-rolled at helical rolling mill at 375 mm diameter mandrel to 640×out390×2040-2100 mm sleeves-billets with increase in diameter δp. = 6.67% and rolling-out µp. = 1.218. Cold- or hot-charged ingots-billets are heated to 1270-1280°C. Said ingots-billets are pierced-rolled at helical rolling mill at 525 mm diameter mandrel to 670×out540×3540-3650 mm sleeves with increase in diameter δp. = 3.13% and rolling-out µp. = 1.752. Rerolled pipes are bored, turned and trimmed to commercial seamless hot-strained 630×16×3100-3200 mm pipes with diameter allowance of ±0.8% and wall allowance of ±10.0%.
EFFECT: decreased metal consumption factor.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF SEAMLESS HOT-WORKED MACHINED PIPES WITH SIZE 530(16 MM WITH INCREASED ACCURACY OUT OF STEEL GRADE "08X18H10T" FOR NUCLEAR POWER ENGINEERING STRUCTURES | 2013 |
|
RU2554250C1 |
| PRODUCTION OF SEAMLESS HOT-STRAINED MACHINED HIGHER-STRENGTH 630×16 mm PIPES OF 08X18H10T-GRADE STEEL FOR NUCLEAR POWER PRODUCTION STRUCTURES | 2013 |
|
RU2557390C1 |
| METHOD OF FABRICATION OF SEAMLESS HOT-ROLLED MACHINED PIPES WITH EXTENDED PRECISION SIZE 530(16 MM FROM STEEL GRADE "08X18H10T" FOR NUCLEAR POWER FACILITIES | 2013 |
|
RU2553729C1 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 610×28-32×4700-5400 mm FROM "15Х1М1Ф"- AND "10Х9МФБ"-GRADE STEELS AT PRU 8-16'' WITH PILGER MILLS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING WITH HIGHER MECHANICAL PROPERTIES | 2012 |
|
RU2522514C1 |
| PRODUCTION OF SEAMLESS HOT-STRAINED MACHINED 610(36,53(3000-3400MM-PIPES FROM "08-18=10T-+"-GRADE STEEL FOR NUCLEAR POWER PRODUCTION | 2013 |
|
RU2537412C2 |
| METHOD OF MANUFACTURING OF SEAMLESS HOT FINISHED MACHINED PIPES WITH SIZE ID489+3,0/-0×19,5+3,0/-0×4090+40/-0 AND ID489+3,0/-0×19,5+3,0/-0×2500+40/-30 mm OUT OF STEEL GRADE "38ХН3МФА" FOR BOTTLES MANUFACTURING | 2013 |
|
RU2553727C1 |
| METHOD OF PRODUCTION OF COLD-ROLLED PIPES WITH SIZE VN346(40 MM FROM STEEL OF GRADE "08-18=10T-+" FOR NUCLEAR POWER ENGINEERING FACILITIES | 2013 |
|
RU2547054C2 |
| METHOD OF PRODUCTION OF SEAMLESS HOT-WORKED BOILER AND STEAM LINE 530×30-75 MM PIPES FROM "10Х9К3В2МФБР-Ш " GRADE REFRACTORY STEEL FOR POWER EQUIPMENT WITH STEAM SUPERCRITICAL PARAMETERS | 2014 |
|
RU2558319C1 |
| PRODUCTION OF "вн.279×36 (351×36)" AND "вн. 346×40" (426×40) mm PIPES FOR NUCLEAR POWER STATIONS FROM "10ГН2МФА" AND "08Х18Н10Т" GRADE STEELS WITH 7 mm INNER CLAD PLY | 2013 |
|
RU2542129C2 |
| METHOD OF PRODUCTION OF SEAMLESS MACHINED PIPES WITH SIZE OF 610×28-32 mm FROM STEEL OF 08Cr18N10T-S GRADE | 2017 |
|
RU2638263C1 |
