МЕТОДЫ МАГНИТНО-ИМПУЛЬСНОЙ СВАРКИ (ОБЗОР)

Abstract

The article presents the features of various methods of pulsed welding in the solid phase using magnetic pressure according to a scheme with normal loading. A scheme of magnetic-pulse welding, implemented through electrical discharge cleaning without oblique impact, is described. Magnetic pressure is used for forming and welding. The authors proposed an original scheme for producing enclosing structures from dissimilar alloys by preheating the assembled unit in a vacuum, followed by crimping through the transmitting medium «shell» with an inductor according according to the «crimp» scheme. To obtain joints of the «rod-sheet» type in a heterogeneous combination of materials and structures of different thicknesses, the authors proposed to carry out a sequential connection of a magnetic hammer with the parts being welded, which allows synchronizing the process of thermal and force effects on the surfaces being welded. Various schemes for mating parts to be welded have been developed, including those using powder compositions as a connecting element. To implement the presented technological processes, universal special technological discharge-pulse equipment has been created, which makes it possible to implement the processes of welding, stamping, pressing, crimping, electric explosion of conductors and electrohydropulse processing of materials.