FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, particularly to production of seamless hot-rolled 550x46-60 mm size pipes for boilers, steam lines and manifolds of plants with high and supercritical steam parameters made of "10Х9МФБ-Ш"-grade steel. The pipes are produced by ESR process to get the hollow ingots to be turned and bored to the hollow ingots-blanks of 660×out.340×2300±50 mm size. These are heated to 1170-1190°C, broached-rolled at the helical rolling mills on 475 mm and 450 mm diameter sleeves sized to 680×out.490×3170-3310-680×out.465×2860-2980 mm. Sleeves are rolled at PRU 8-16" with Pilger mills to commercial pipes sized to 550×46×5900-6200 - 550×60×5000-5300 mm. Seed ends and Pilger ends are cut by hot sawing. Said ingots-blanks are straightened at six-roll straightener, heat treated and subjected to ultrasound control and acceptance of commercial pipes.
EFFECT: decreased metal input, higher efficiency of Pilger plant.
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| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF 550×25-30 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS OF "10Х9МФБ-Ш"-GRADE STEEL | 2014 |
|
RU2570152C2 |
| PRODUCTION OF 377×20-60 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS OF "10Х9МФБ-Ш"-GRADE STEEL | 2014 |
|
RU2570154C2 |
| METHOD OF PRODUCTION OF 325×16-30 mm SEAMLESS PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH CRITICAL AND SUPERCRITICAL STEAM PARAMETERS OF STEEL GRADE "10-9¦L+-+" | 2014 |
|
RU2578060C2 |
| METHOD OF PRODUCTION OF 426×15-30 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH CRITICAL AND SUPERCRITICAL STEAM PARAMETERS OF STEEL GRADE "10Х9МФБ-Ш" | 2013 |
|
RU2567427C2 |
| MANUFACTURING METHOD OF SEAMLESS TUBES WITH DIMENSIONS OF 530×25-30 mm FOR STEAM BOILERS, STEAM LINES AND HEADERS OF PLANTS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS FROM INGOTS OF ELECTROSLAG REMELTING PROCESS FROM STEEL GRADE "10Х9МФБ-Ш" | 2013 |
|
RU2542053C1 |
| PRODUCTION OF 377×14-60 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 | 2012 |
|
RU2537682C2 |
| METHOD OF PRODUCTION OF 325×16-25 mm SEAMLESS PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH CRITICAL AND SUPERCRITICAL STEAM PARAMETERS OF STEEL GRADE "10Х9МФБ-Ш" | 2014 |
|
RU2567407C1 |
| METHOD OF FABRICATION OF SEAMLESS PIPES WITH SIZES 325×26-45 mm FOR BOILERS, STEAM LINES AND MANIFOLDS OF UNITS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS FROM "10Х9МФБ-Ш" BRAND STEEL | 2014 |
|
RU2564498C1 |
| PRODUCTION OF 325×13-15 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS OF "10Х9МФБ-Ш"-GRADE STEEL | 2012 |
|
RU2523376C1 |
| PRODUCTION OF 426×21-40 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS OF "10Х9МФБ-Ш"-GRADE STEEL | 2012 |
|
RU2524459C1 |
