Application of the Electromagnetic Impulses for Joining of Details and Compacting of Powders

The basic physics and technological aspects of application of the electromagnetic impulses for the obtaining of permanent connections from pipes, for compacting of powders and for shaping of details from metallic and nonmetallic materials are analyzed. The recommendations on choice of parameters of the equipment (pulsed electromagnetic fields generator) and of the tool (magnetic coil) for the annular and flat machining are offered. The optimal working conditions (maximal pressure plus durability) for each type of magnetic coils are revealed. Thus, the presence of the electromagnetic enhancers promotes the increasing of the impulse pressure on the specified area of the detail and, hence, increases the tool zone. Examples of practical application of the proposed technology for joining of details from heterogeneous materials (copper-aluminum, copper-steel and others) are offered. Compacting of powders using the electromagnetic impulses allows to increase the density and to improve the physical mechanical properties of the powder production. Besides the absence of the mechanical contact in this method open up possibilities to produce the new modifications of the sintered metal powder details.