Experimental testing results of the sheet metal magnetic-pulsed attraction when direct hook-up of the current source

Abstract

The purpose of the given paper is a workability experimental test of the magnetic-pulsed attraction method of the predetermined part of the sheet metal when its direct hook-up to the external source current in conditions close to the corresponding real production operation. In the native scientific publications, the given method is known as the method of «the direct passage of current» through the object being processed. Its main particularity supplying the practical workability is the work in the lowfrequency regime when the intensive penetration of the electromagnetic fields through the functional components in the tool working zona. On the basis of the preliminary calculation, the corresponding experimental model of the high voltage magnetic-pulsed system including a power source and the work tool was elaborated and created. It is experimentally shown that the induction effects lead to essential decreasing the forces of the magnetic-pulsed attraction. The practical capabilities of the magneticpulsed attraction when the processed object direct hook-up to the current source («direct passage of current» were successfully demonstrated. The controlled (dosed) feed of the magnetic-pulsed force action allowing controlling the deformation process of the processed object was practically implemented. The elaborated experimental model was successfully approbated on an example of the removal of the dents in metal coating car bodies. The experimentally approbated magnetic-pulsed attraction method has to be particularly interesting for technologies of the dents removal in the car bodies, because, unlike known analogs, it does not require the overall construction disassembly for access from the inside to the dent being removed.

Keywords

• magnetic-pulsed attraction
• thin-walled sheet metal
• «direct passage of current»
• experimental approbation
• flattening automobile bodies