Regression analysis of variation of the drawing clearance in the case of using steel tool.
|Lubrication||Initial blankholder pressure||Slope of the regression||Determination coefficient R 2|
|With||1.6 MPa||y = −26.6x + 515.7||0.986|
|Without||y = −36.7x + 555.9||0.993|
|With||3.2 MPa||y = −64.6x + 809.5||0.992|
|Without||y = −66.6x + 851.47||0.964|
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