FIELD: plastic working of metals, namely straightening of sheet metal.
SUBSTANCE: method comprises steps of subjecting steel plate to sign-variable elastoplastic bending in roller type straightening machine. Before realizing such bending plate is subjected to counter-flake treatment. Then actual value of limit yield for given lot of strip steel is determined. Actual value of rigidity factor at straightening for given lot of strip steel is also determined according to diagram n - σt drawn up for strip steel. Actual value of temperature coefficient is determined according to diagram ε - T for strip steel. Gap between rollers is calculated with use of formula given in specification. Sign-variable elastic-plastic bending of plate is realized at temperature of final stage of counter-flake treatment.
EFFECT: improved quality of products made of steel plates according to invention due to increased limit yield of metal.
3 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF STRAIGHTENING ROLLED THICK-SHEET | 2010 |
|
RU2432221C1 |
| METHOD OF STRAIGHTENING ROLLED PLATES | 2015 |
|
RU2581697C1 |
| METHOD FOR STRAIGHTENING ROLLED PIECE AND ROLLER-TYPE STRAIGHTENING MACHINE FOR PERFORMING THE SAME | 1997 |
|
RU2136421C1 |
| METHOD TO PRODUCE THICK-SHEET LOW-ALLOYED STRIP | 2011 |
|
RU2463360C1 |
| METHOD OF DETERMINATION OF BOUNDARY CONDITIONS AND CRITERIA OF METAL PARTS MOLDING | 2006 |
|
RU2336135C2 |
| METHOD FOR STRAIGHTENING OF ROLLED SHEETS | 0 |
|
SU1690887A1 |
| DEVICE FOR STRAIGHTENING OF WIDE HOT ROLLED STRIPS AND METHOD OF THEIR STRAIGHTENING | 2008 |
|
RU2390396C1 |
| ROLLED SHEET STRAIGHTENING METHOD | 1998 |
|
RU2138354C1 |
| METHOD TO PRODUCE THICK-SHEET LOW-ALLOYED STRIP | 2011 |
|
RU2463359C1 |
| ROLLED PLATES STRAIGHTENING METHOD | 2004 |
|
RU2294806C2 |
