FIELD: process engineering.
SUBSTANCE: invention relates to pipe rolling. This process comprises machining for rough roll surfacing at roll-turning machines by program or template with 5-10° overlap towards idle section from roll zero point of from lengthwise run-out angle. Wear- and heat-resistant ply of "СВ30Х30Н16Г7" steel is deposited on working ply over flux with allowance for machining. Roll working surface is machined after surfacing surface finish Rz≥80 mcm. Finishing is performed to Rz≤20 mcm at section flow flat die of 0.15 to 0.20 of its length adjoining the finishing section and lengthwise run-out angle.
EFFECT: higher roll hardness, accelerated rolling, better surface quality.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING ROLLS OF PILGER MILLS FOR HOT ROLLING OF TUBES | 2003 |
|
RU2246364C2 |
| METHOD FOR PREPARING AND CALIBRATING ROLLS OF PILGER MILL | 2004 |
|
RU2288060C2 |
| PRU WITH PILGER MILLS FOR ROLLING OF SEAMLESS HOT-ROLLED 273-630 mm-DIA PIPES | 2013 |
|
RU2533614C1 |
| ROLL OF PILGER MILL FOR ROLLING OF THIN-WALL TUBES WITH DIAMETER OF 508 MM WITH INCREASED ACCURACY AS TO WALL | 2013 |
|
RU2542131C1 |
| PILGER MILL ROLL FOR HOT ROLLING OF 530 AND 550 MM THIN-WALL PIPES | 2013 |
|
RU2537637C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED 550×25 mm PIPES AT 8-16" PRU WITH PILGER MILLS | 2012 |
|
RU2547973C2 |
| 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 |
| ROLL OF PILGRIM MILL FOR ROLLING OF THIN-WALLED PIPES FROM COLD-RESISTANT AND CORROSION-RESISTANT GRADES OF STEEL | 2012 |
|
RU2516887C2 |
| PRODUCTION OF REROLLED LONG-SIZED PIPES FROM IRON-NICKEL- AND NICKEL-BASED ALLOYS AT PRU WITH PILGER MILLS | 2012 |
|
RU2523399C1 |
| PRODUCTION OF 273-630 MM DIAMETER 8-90 MM DEEP WALL SEAMLESS HOT-ROLLED PIPES AT PIPE ROLLING PLANT 8-16'' WITH PILGER MILLS | 2012 |
|
RU2519195C1 |
