Effects of temperature on deep drawing of sheet metals

The influence of temperature on the flow stress and the uniform strain of steel, brass, aluminium and AISI 304 and 316 type stainless steels is determined by using uniaxial tensile tests. Sliding and stretching friction coefficients at several surface temperatures are measured for various sheets and lubricants using a bending under tension type strip drawing test. The validity of the results is verified by deep drawing experiments. The influence of temperature difference between the punch nose region and the flange on the drawing and fracture loads and on the limiting drawing ratio is determined