FIELD: metallurgy.
SUBSTANCE: invention is intended for improving stability of working and backup rolls and quality of strips rolled through the stands of quarto continuous group in wide-strip hot rolling mills. The method includes commissioning of working rolls to the last stand and alteration of roll operation with regrinding, further rolls rearrangement among stands against the rolling movement as long as the size of barrels diametre is reduced.
EFFECT: reduction of roll system deflection and transverse gage interference, proportional reduction of roll revolutions number as well as their deterioration is ensured by exceeding nominal value of body diametre in commissioned working rolls by 2-7%, operation in last stand is maintained until nominal value is reached and relative strip reduction is this strand does not exceed 18%.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING STEEL HOT-ROLLED STRIPS | 2010 |
|
RU2455089C1 |
| METHOD OF OPERATION OF CENTRIFUGAL CAST WORKING ROLL IN STANDS OF QUARTO ROUGHING GROUP OF HOT ROLLING MILL | 2006 |
|
RU2328355C2 |
| BACKUP ROLL OPERATION METHOD | 2007 |
|
RU2374017C2 |
| ROLLING ROLL OPERATION METHOD | 1998 |
|
RU2131312C1 |
| OPERATION METHOD OF BEARING ROLLS OF MILLS OF QUARTO COLD ROLLING | 2008 |
|
RU2376088C2 |
| METHOD OF RUNNING OF ROLL | 1998 |
|
RU2124956C1 |
| METHOD OF OPERATING COLD ROLLED ROLLS OF SHEET MILL | 2006 |
|
RU2332272C2 |
| METHOD FOR OPERATING SUPPORT ROLLS OF CONTINUOUS WIDE STRIP ROLLING MILLS | 2022 |
|
RU2795664C1 |
| METHOD FOR EXPLOITATION OF ROLLS IN SHEET ROLLING FOUR-HIGH STAND | 2000 |
|
RU2184631C2 |
| WIDE STRIP HOT ROLLING MILL ROLLS OPERATION METHOD | 2004 |
|
RU2277023C1 |
