FIELD: technological processes.
SUBSTANCE: invention is related to method for rolling of seamless hot-rolled casing pipes and may be used in production of seamless hot-rolled casing pipes with diametre of 508 mm in pipe-rolling plant 8-16" with Pilger mills in ordinary and cold-resistant versions. In method for production of seamless hot-rolled casing pipes with diametre of 508 mm in pipe-rolling plant 8-16" with Pilger mills, rolling of pipes with size of 508x11.1 and 508x12.7 mm is carried out from conical crop drilled bars with size of 600-615x100x1650 mm, which are broached in slant rolling mill in the mandrel with diametre of 500 mm into cartridges of 660×515int.×3370 mm with average increase of diametre of up to 8.6%, and along length of a cone bar - from 7.3 to 10%, and rolled in Pilger mill into pipes with size of 508×11.1×23000±250 and 508×12.7×20000±250 mm, cut by saw in two equal parts, rolling of cold-resistant pipes with size of 508×11.1 and 508×12.7 mm is carried out from cone crop drilled bars with size of 600-615×100×1650 mm, drilled ESR bars and forged billets with size of 600×100×1700 mm, which are broached in slant rolling mill into cartridges with size of 660×515int.×3400 mm with diametre increase of 10% and rolled in Pilger mill into pipes with size of 508×11.1×23000±250 mm and 508×12.7×20000±250 mm, cut into two equal parts, and rolling of pipes with size of 508×16.1 mm is carried out from drilled ESR bars and forged billets with size of 600×100×1325±25 mm, which are broached in slant rolling mill into cartridges with size of 660×515int.×2640±50 mm and rolled in Pilger mill into pipes with size of 508×16.1×12000±300 mm.
EFFECT: invention provides for production of seamless hot-rolled ordinary and cold-resistant casing pipes with diametre of 508 mm in pipe-rolling plant 8-16" for oil and gas industry of Russia.
4 cl
| Title | Year | Author | Number |
|---|---|---|---|
| MANUFACTURING METHOD OF SEAMLESS HOT-ROLLED CASING PIPES WITH DIMENSIONS OF 508×11,1, 508×12,7 AND 508×16,1 mm ON TPU 8-16" PIPE ROLLING UNIT WITH PILGER MILLS IN STANDARD AND COLD-RESISTANT CONFIGURATIONS | 2013 |
|
RU2545957C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 610×28-32 mm FROM "15Х1М1Ф"- AND "10Х9МФБ-Ш"-GRADE STEELS AT PRU 8-16'' WITH PILGER MILLS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING WITH HIGHER MECHANICAL PROPERTIES | 2012 |
|
RU2523394C1 |
| 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 |
| METHOD OF PRODUCING SEAMLESS HOT-DEFORMED LARGE- AND MEDIUM-DIAMETRE PIPES AT PIPE ROLLING UNITS WITH STEP-ROLLED MILLS | 2008 |
|
RU2401171C2 |
| FABRICATION METHOD OF SEAMLESS HOT-DEFORMED MECHANICALLY TREATED TUBES WITH DIAMETRE OF 530-550 mm FROM CORROSION-RESISTANT DIFFICULT-TO-FORM GRADES OF STEEL AND ALLOYS ON TUBE-FORMING INSTALLATION 8-16" WITH PILGER MILLS | 2007 |
|
RU2387501C2 |
| PRODUCTION OF 299×10-60 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 |
|
RU2522513C1 |
| 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 OF PRODUCTION OF SEAMLESS HOT-ROLLED LARGE- AND MEDIUM-DIAMETER PIPES FROM STEEL AND ALLOYS AT PIPE ROLLING PLANTS WITH PILGRIM MILLS FROM TUBULAR BLANKS | 2012 |
|
RU2502570C1 |
| 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 FROM ESR INGOTS OF "10Х9МФБ-Ш"-GRADE STEEL | 2013 |
|
RU2534593C2 |
| METHOD FOR PRODUCTION OF SEAMLESS HOT-DEFORMED BOILER THICK-WALLED PIPES WITH SIZE OF 377×50 AND 465×75 mm IN PIPE-ROLLING PLANTS WITH PILGER MILLS FOR PIPELINES OF HEAT COAL BLOCKS WITH SUPERCRITICAL STEAM PARAMETRES | 2006 |
|
RU2386498C2 |
