Evaluation of surface microgeometry of sheets for automotive body parts

Application of cold-rolled sheets for manufacturing the automotive body parts has been considered. Quality of the sheets from steel of 08Yu grade has been discussed. The arts and colored at computer-aided line. In connection with this, quality of the sheets should carefully be evaluated. Roughness of the sheets is measured. Number of peaks is determined. Regularities in variation of quality of finished parts made from the sheets with various roughness and numbers of peaks have been found. The regularities have been determined with the use of statistical methods. Obtained results have shown that numbers of peaks should be controlled.