FIELD: process engineering.
SUBSTANCE: invention relates to pipe rolling. Continuously cast 530×100×1750±25 mm and 550×100×1850±25 mm billets are heated to 1260-1280°C, pierced at helical rolling mills at 375mm-dia mandrels to size of outer diameter with rolling-out µrol=1.88-1.90 to 550xID390×3250-3350 mm and 550xID390×3440-3540 mm sleeves. Said sleeved are rolled to 377×9-11×27000-33000 mm pipes of triple length and 377×12-16×20000-25000 mm of double length and rolling-out µ=6.51-10.24 mm with feed of said sleeves to strain sources m=15-23 mm.
EFFECT: decreased metal input and working hours of repair.
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| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF SEAMLESS COLD-RESISTANT AND NONCORROSIVE 377×9-16 AND 426×9-18 mm PIPES AT PRU 8-16 WITH PILGER MILLS WITH STRINGENT REQUIREMENTS TO CURVATURE | 2013 |
|
RU2542150C2 |
| MANUFACTURING METHOD OF SEAMLESS HOT-DEFORMED PIPES OF LARGE AND MEAN DIAMETERS ON PIPE ROLLING UNITS WITH PILGER MILLS FROM CONTINUOUSLY CAST BILLETS | 2013 |
|
RU2545962C2 |
| METHOD FOR PRODUCING LARGE- AND MEAN-DIAMETER TUBES OF COLD-RESISTANT AND CORROSION-RESISTANT STEELS IN TUBE ROLLING PLANTS WITH PILGER MILLS | 2005 |
|
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| PRODUCTION OF SEAMLESS HOT-ROLLED, SMOOTH, THREADED, BOILER-ROOM, THICK-WALL AND SPECIAL-PURPOSE PIPES 273-630 MM IN DIAMETER AT PRU WITH PILGER MILLS | 2013 |
|
RU2564505C2 |
| METHOD OF PRODUCING SEAMLESS HOT-DEFORMED LARGE- AND MEDIUM-DIAMETRE PIPES AT PIPE ROLLING UNITS WITH STEP-ROLLED MILLS | 2008 |
|
RU2401171C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED MACHINED 610×36,53 mm PIPES OF 15X5M GRADE STEEL FOR COMMUNICATIONS OF REFINERIES | 2013 |
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RU2545948C2 |
| METHOD TO PRODUCE SEAMLESS PIPES WITH SIZE OF 377H14-60 MM FOR STEAM BOILERS, STEAM LINES AND HEADERS OF PLANTS WITH HIGH AND SUPERCRITICAL PARAMETERS OF STEAM FROM STEEL OF GRADE 10H9MFB-SH | 2012 |
|
RU2516161C1 |
| PRODUCTION OF SEAMLESS HOT-WORKED BOILER AND STEAM LINE 426×21-70, 465×25-75 AND 530×30-75 mm PIPES FROM "10Х9К3В2МФБР-Ш" GRADE REFRACTORY STEEL FOR POWER EQUIPMENT WITH STEAM SUPERCRITICAL PARAMETERS | 2012 |
|
RU2522509C2 |
| PRODUCTION OF REROLLED LONG-SIZED PIPES FROM IRON-NICKEL- AND NICKEL-BASED ALLOYS AT PRU WITH PILGER MILLS | 2012 |
|
RU2523399C1 |
| PRODUCTION OF 273×9-15 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 |
|
RU2530099C2 |
