FIELD: manufacture of steel seamless tubes in continuous rolling mill.
SUBSTANCE: method for making steel seamless tubes comprises steps of measuring wall thickness along circle of steel seamless tube rolled in production line including continuous rolling mill for rolling seamless tube on mandrel. Said mill includes set of reducing stands with reducing rolls arranged in accordance with different reduction directions. Wall thickness error is minimized on base of said measurement results due to individual separate control of positions of both ends of each axle of reducing rolls at least in last stands of mill for rolling seamless tubes on mandrel.
EFFECT: elimination of tube wall thickness errors, enhanced efficiency, more narrow size allowance of rolled tubes.
13 dwg, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MANUFACTURE OF SEAMLESS PIPE AND CONTINUOUS MANDREL FOR ITS REALISATION | 2010 |
|
RU2433876C1 |
| SEAMLESS TUBE PRODUCING METHOD | 2004 |
|
RU2303497C2 |
| METHOD OF LENGTHWISE CONTINUOUS ROLLING OF SEAMLESS TUBES | 1992 |
|
RU2097155C1 |
| EXTENSION ROLLING CONTROL METHOD | 2006 |
|
RU2373007C2 |
| METHOD OF COLD PILGER ROLLING OF SHAPED TUBES | 0 |
|
SU1708454A1 |
| MANUFACTURING METHOD OF CONTOUR FORM PROFILE | 2008 |
|
RU2368439C1 |
| METHOD FOR MAKING SEAMLESS TUBES ON MANDREL IN MILL WITH THREE -ROLL STANDS | 2004 |
|
RU2309015C1 |
| PROCEDURE OF EXTENSION ROLLING AT MILL FOR ROLLING SEAMLESS TUBES ON MANDREL | 2006 |
|
RU2357815C1 |
| METHOD AND APPARATUS FOR CONTROLLING POSITION AT ROLLING WORKING ROLLS OF THREE-ROLL STAND OF MILL FOR ROLLING SEAMLESS TUBES ON MANDREL | 2004 |
|
RU2319564C1 |
| SEAMLESS TUBE PRODUCTION UNIT | 2011 |
|
RU2483816C2 |
