Defect in deep drawing cup | Reason | ||
---|---|---|---|
P | Orange peel on the surface of cup | 1 | No blank holding force |
Q | Wrinkling at the flange of cup | 2 | Very small corner radius of the punch |
R | Tearing at the bottom corner of cup | 3 | Large grain size in the blank material |
S | Earring at the top edge of the cup | 4 | Anisotropy of the blank material |