Defects In Sheet Metal Drawing

This defect is caused by the anisotropy of the sheet metal.

Defects in sheet metal drawing.

Rebond team of expert engineers rely on their professional knowledge and extensive experience to perform comprehensive analysis of following 6 common defects in sheet metal forming. Figure a wrinkling in the flange or b in the wall c tearing d earing e surface scratches basic press working operation sheet metal working is also a metal forming operation where the material being worked is in the form of sheets the working is usually at room temperature. This defect is caused by improper punch die clearance and poor lubrication. Excessive thinning in areas of the sheet metal is also an unwanted defect.

Surface quality plays a very important role in sheet metal forming parts. Tearing is one of the most common defects. Defects that occur during deep drawing of sheet metal can be controlled by careful regulation of process factors. Excessive thinning thickening of the sheet during forming.

These defects include draw marks burnishing step rings etc. One of the primary defects that occurs in deep drawing operations is the wrinkling of sheet metal material generally in the wall or flange of the part. This defect is caused by non uniform yielding of metal due to non uniform forces. The flange of the blank undergoes radial drawing stress and tangential compressive stress during the stamping process which sometimes results in wrinkles.

Defects in drawing process. Springback or final part deviation from nominal incorrect process or number of forming tools. Causes of these are mostly too high or improper force distribution and material considerations.