Abstract
The paper addresses the issues, related to mass transfer of treatment products when using combined forming methods with the application of an electric field. The impact of process components upon strength characteristics of parts has been shown. We have discovered the dependence of allowance removal rate upon the quality of preparation of the reference workpiece surface. The article describes the available industrial and newly developed methods of mass transfer intensification, using the original kinematics of movement, the improvement of the geometrical shape, the position of electrode-tools and the application of various options in the flow of liquid working media, including the cavitational mode, described in detail for the first time. We have disclosed the mechanism of the impulse effect upon treatment products, ejected from the inter-electrode gap by the liquid working medium. The issues have been discussed, concerning the hydrodynamic instability of liquid working media flow, impacting the intensity of mass transfer, with limitations, caused by the impact of side surfaces of holes and channels when processing with a profiled and a non-profiled wire electrode-tool. We have shown the impact of a concentrated ultrasonic beam upon mass transfer of treatment products, formed at a great distance from the electrode.
Highlights
The accumulation of treatment products in the inter-electrode gap limits the speed of material removal from a workpiece, which can quickly lead to complete cessation of allowance removal from it
There is an objective need for rational use of available types of mass transfer intensification of treatment products, and for the search of new ones, especially in manufacturing the parts of newly created equipment, extensively employing hard-to-process materials, for which the application of electrical processing methods is
The intensity of the transfer of treatment products depends on the geometry of the interelectrode gap profile
Summary
The accumulation of treatment products in the inter-electrode gap limits the speed of material removal from a workpiece, which can quickly lead to complete cessation of allowance removal from it. This phenomenon is often observed with electrical methods of processing, especially, with combinations of thermal, chemical and mechanical impacts, used in electroerosive, electrochemical, dimensional and ultrasonic processing [1;2]. There is an objective need for rational use of available types of mass transfer intensification of treatment products, and for the search of new ones, especially in manufacturing the parts of newly created equipment, extensively employing hard-to-process materials, for which the application of electrical processing methods is
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