FIELD: metallurgy.
SUBSTANCE: this process comprises heating of billets to ductility temperature, piercing at helical rolling mill to sleeves, rolling of the latter at Pilger mill to pipes, pipes gaging at sizer and air cooling. Billets are made of steel micro alloyed with vanadium from 0.02 to 0.07% and niobium of 0.01 to 0.03%, or titanium from 0.01 to 0.03% and aluminium from 0.02 to 0.05%. Ripe rolling is performed at sleeve feed to straining source of 15-20 mm for pipes with wall thickness of 10-15 mm and 20-25 mm for pipes with wall thickness of 15-20 mm.
EFFECT: higher toughness after rolling at Pilger mill, lower costs.
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| Title | Year | Author | Number |
|---|---|---|---|
| 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 |
| PRODUCTION OF SEAMLESS COLD-RESISTANT AND NONCORROSIVE 377×9-16 mm PIPES AT PRU WITH PILGER MILLS | 2013 |
|
RU2541228C2 |
| PRODUCTION AND OPERATION OF PILGER MILL COMPOSITE MANDRELS FOR PRODUCTION OF LARGE- AND MEDIUM-DIAMETER HOT-ROLLED PIPES | 2012 |
|
RU2523179C2 |
| 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 |
| PRODUCTION OF LONG-SIZED 265×22×13000±300 AND 285×25×11750±50 mm-TUBE STOCK FROM HOLLOW ESR INGOTS-BILLETS OF "08Х10Н20Т2" AND "08Х10Н16Т2" GRATE STEEL FOR SUBMARINE PERISCOPE DRIVES | 2012 |
|
RU2527591C2 |
| PRODUCTION OF COMMERCIAL AND REROLLED PIPES AT PRU WITH PILGER MILLS FROM FORGED OR HOLLOWS ESR INGOTS-BILLETS FROM ALLOYED HARDLY-DEFORMED STEELS AND ALLOYS AND TITANIUM-BASED STEELS | 2013 |
|
RU2542156C2 |
| 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 HOT-ROLLED PIPES SIZED TO 610×28-32×5300-6000 mm FROM "15Х1М1Ф"- AND "10Х9МФБ-Ш"-GRADE STEELS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING | 2012 |
|
RU2527523C2 |
| PRODUCTION OF 465×75 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 |
|
RU2527587C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED CASING PIPES AT PRU WITH PILGER MILLS FOR THREAD CUTTING | 2013 |
|
RU2545928C2 |
