FIELD: process engineering.
SUBSTANCE: invention relates to calibration of Pilger mill rolls for 273-630 mm diameter pipes rolling. Roll body has round-section pass with tangential transverse exits. Said pass consists of the die composed by roll flange increasing radius of Θh = 90-120° with smoothly varying transverse exit angle αt.e.h..It includes also a finishing section of the angle of Θf = 60-90° with constant cross-section and transverse exit angle αf.e.t.i.. Lengthwise exit section angle makes Θl.e. = 30-40° with smoothly increasing varying transverse exit angle αt.e.i.t.e. and idling section of constant cross-and transverse exit angle αf.e.t.i.. = 33°.
EFFECT: makes smaller transverse and lengthwise curvature and difference in wall depth, lower metal input.
2 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PILGER MILL ROLL FOR HOT ROLLING OF 530 AND 550 MM THIN-WALL PIPES | 2013 |
|
RU2537637C2 |
| ROLL OF PILGRIM MILL FOR ROLLING OF TUBE STOCKS WITH SIZE 290H11-12 MM FROM LOW-DUCTILE BORON-CONTAINING STEELS OF GRADES 04H14T3R1F-SH AND 04H14T5R2F-SH | 2012 |
|
RU2516148C1 |
| PILGER MILL ROLL FOR HOT ROLLING OF 610(10-40mm-PIPES | 2013 |
|
RU2537342C2 |
| ROLL OF PILGER MILL FOR ROLLING OF THIN-WALL TUBES WITH DIAMETER OF 508 MM WITH INCREASED ACCURACY AS TO WALL | 2013 |
|
RU2542131C1 |
| ROLL OF PILGRIM MILL FOR ROLLING OF THIN-WALLED PIPES FROM COLD-RESISTANT AND CORROSION-RESISTANT GRADES OF STEEL | 2012 |
|
RU2516887C2 |
| PILGER MILL ROLL FOR HOT ROLLING OF 610×28-40 mm PIPES | 2013 |
|
RU2527516C1 |
| ROLL OF PILGER MILL FOR ROLLING THICK-WALL LARGE- AND MEAN-DIAMETER TUBES | 2004 |
|
RU2294251C2 |
| ROLL OF PILGER MILL FOR ROLLING THIN-WALL TUBES | 2005 |
|
RU2294250C2 |
| ROLL OF PILGER MILL FOR ROLLING SEAMLESS HOT-ROLLED 610×28-32 AND 630×28-32 mm PIPES FOR PIPELINES OF BOILER UNIT INERMEDIATE STEAM SUPERHEATING FROM ESR "690×bh590×3300-3500", "700×bh580×3200±50" AND "720×bh600×3200±50" mm SLEEVES AND HOLLOW INGOTS | 2012 |
|
RU2523379C2 |
| ROLL OF PILGER MILL FOR ROLLING OF HEAVY-WALL 630×56 mm PIPES OF HARDLY-DEFORMED STEEL AND ALLOY GRADES FOR NUCLEAR POWER PRODUCTION STRUCTURES FROM ESR SLEEVES AND HOLLOW INGOTS SIZED TO 690-720×70-90×3400 mm | 2013 |
|
RU2545932C2 |
