Distribution of Shrinkages During Dressing Off of Sheet Metal for Deep Drawing
In the production of sheet steel for deep drawing, dressing off is the final technological operation with the help of which the following problems are solved: 1) the flow stage is eliminated and the formation of slip bands during stamping of parts from sheet steel is thereby eliminated; 2) the mechanical properties of the steel are changed, and the sheet material becomes anisotropic, which promotes increased stability in the drawing of parts of complex form [3,4]; 3) it serves as a means for obtaining sheets of the required profile, and decreases divergence in the sheet thickness, which improves the technological properties of the sheet metal. In [1,2] it was shown that the deformation age-hardening of dressed steel occurs considerably more slowly in comparison with age-hardening of steel after dressing with multi-roller dressing machines and stretching of the sheet to the elastic limits with stretching machines.
KeywordsSheet Steel Slip Band Sheet Thickness Mathematical Expectation Deep Draw
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