FIELD: machine building.
SUBSTANCE: invention relates to a method of making a ploughshare strip. Multipass reduction of heated strip is performed in rolls of stands with gages. Multi-pass reduction of strip heated to temperature of 1,000–1,250°C is carried out with reduction factor through thickness of 1.32–1.75 in not more than 3 stands and further with reduction factor through thickness of 1.10–1.45 in not more than 7 stands. Multipass reduction is carried out in at least 5 stands, and in one of the last five stands reduction is performed along the strip width. Reduction of thickness and width of the strip at reduction is performed by not more than 15 mm.
EFFECT: result is increased wear resistance of ploughshare strip and reduced cracking on it.
7 cl, 1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO ROLL TROUGH-LIKE PROFILES AND SYSTEM OF PASSES TO THIS END | 2008 |
|
RU2388556C1 |
| METHOD FOR SECTION BAR ROLLING | 2007 |
|
RU2343015C1 |
| RAIL ROLLING METHOD (VARIANTS) | 2021 |
|
RU2776314C1 |
| STEEL STRIP HOT ROLLING METHOD | 2004 |
|
RU2273535C1 |
| METHOD TO PRODUCE STEEL SECTION BARS | 2013 |
|
RU2544711C1 |
| METHOD FOR MAKING ROLLED BARS | 2002 |
|
RU2228806C1 |
| METHOD OF ROLLING ASYMMETRIC STRIP SECTIONS WITH WEDGE-LIKE BULGES | 2010 |
|
RU2440201C1 |
| METHOD OF ROLLING SECTION BARS FROM HARD-TO-DEFORM STEELS | 2011 |
|
RU2490081C2 |
| PROCESS FOR ROLLING STRIP WITH ROUND THICKENED PORTIONS IN ITS EDGES | 2004 |
|
RU2257970C1 |
| METHOD OF PRODUCING STEEL HOT-ROLLED STRIPS | 2010 |
|
RU2455089C1 |
