Regression analysis of variation of the drawing clearance in the case of using bronze tool.
|Lubrication||Initial blankholder pressure||Slope of the regression||Determination coefficient R 2|
|With||1.6 MPa||y = −44.2x + 554.9||0.923|
|Without||y = −45.7x + 601.3||0.973|
|With||3.2 MPa||y = −53.2x + 731.9||0.991|
|Without||y = −56.4x + 796.8||0.984|
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