FIELD: metallurgy.
SUBSTANCE: billets and ingots are heated to ductility temperature and pierced at helical rolling mill to sleeve billets. The billets are heated to ductility temperature and pierced and rolled at helical rolling mill to the sleeve billets. Sleeves are rolled at Pilger mill, dip-formed and Pilger head is smooth-rolled. Higher quality of pipes, durability of rolls and longer life of equipment are ensured by dip-forming of sleeves at rolling at roll rpm specified by definite mathematical relationship. The latter allows for roll radius, quantity of feeds, mean factor of advance metal and other factors.
EFFECT: lower metal consumption index, higher efficiency.
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| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF 245-630 MM DIAMETER 8-90 MM DEEP WALL SEAMLESS HOT-ROLLED PIPES AT PIPE ROLLING PLANT 8-16'' WITH PILGER MILLS | 2012 |
|
RU2518364C1 |
| 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 |
| PILGER MILL ROLL FOR 273-630 MM DIAMETER PIPES ROLLING | 2014 |
|
RU2564503C2 |
| 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 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 426×90 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 AT PRU 8-16'' WITH PILGER MILLS | 2013 |
|
RU2537639C1 |
| METHOD OF MAKING WELL CASING SIZED TO 244,5×7,9, 244,5×9 AND 244,5×10 mm AT PIPE ROLLING UNIT WITH PILGER MILLS | 2012 |
|
RU2508955C1 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 630×28-32×4800-5500 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 |
|
RU2530090C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED CASING PIPES AT PRU WITH PILGER MILLS FOR THREAD CUTTING | 2013 |
|
RU2545928C2 |
| PRODUCTION OF REROLLED "426×34×10500±250" mm PIPES AT PRU 8-16'' WITH PILGER MILLS FROM BILLETS OF TITANIUM ALLOY GR 29 | 2012 |
|
RU2523404C1 |
