Improving The Operational Reliability Of Stamped Parts Of Electrical Engineering Machines And Electrical Products

Abstract

The durability and operational reliability of electrical machines, electronic and electrical engineering products in almost all cases can be achieved by imparting special properties to the materials used. In addition, it is extremely important to choose the most rational, economical method of treating materials that provide a high operational reliability and quality of the produced parts. Among a large variety of physico-chemical nature of the impact on the material of a workpiece, the stamping methods have received very a intensive development in the field of influence on the structure and operational properties of the latter. The performance characteristics of the parts of electrical machines and electronic products from a thin-sheet material largely depend on the accuracy of punching and the size of the burr. In addition to the traditional technologies for cutting and punching in hard dies, and with the help of the elastic or liquid media the explosive forming is also used.The advantages of the explosion forming when performing the dividing operations are due to the absence of a gap between the deforming medium and the die. The use of the pulsed metalworking methods in the cutting operations of the sheet metal forming eliminates the nonflatness of parts during the cutting, the formation of burrs and sinkers, forms in terms of the use of the overlaid explosives, a fine and ultrafine-grained material structure. This increases the electrical resistance of steel, reduces the parasitic eddy current losses and the efficiency of the electrical heating elements