Quality of joints obtained by the method of combined flanging

The paper is devoted to evaluation of quality of the joint of panels obtained with use of the combined technology of flanging. The requirements imposed upon such joints in the automotive industry were stated, main of which are strength, no voids and no formation of corrugations. Results of computer simulation as well as metallographic and experimental investigations are presented. The action of main technological and geometric factors on the joint quality was estimated. The conclusion was drawn that joint’s high quality was reached when using the proposed combined technology.