Accession Number : AD0619436

Title :   MECHANISM OF ELECTRICAL EROSION,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Zingerman,A. S.

Report Date : 06 AUG 1965

Pagination or Media Count : 23

Abstract : High-speed photography, in agreement with experiments on the investigation of erosion as a function of pulse length, has indicated that the ejection of metal from the electrodes during electrical erosion takes place during discharge, no metal being ejected from the electrode after the termination of the discharge. The ejection of metal may take place continuously in small portions or occasionally in large portions and has a statistical nature. Investigation of the results of erosion indicates that metal removed may be in all three phases depending upon external and internal conditions, it being possible for liquid particles to have a temperature significantly higher than the melting temperature. Various mechanisms of metal ejection are possible which, just as the ratio between the volumes of the phases of the dispersed metal, depend on a number of conditions. It may be assumed that the ejection of metal proceeds as the result of vaporization of internal small regions located below the surface of the electrode. Such a process results from the presence on nonuniformities with various thermophysical properties which determine nonmonotonic distribution of the temperature field. (Author)

Descriptors :   (*ELECTRODES, EROSION), (*EROSION, ELECTRODES), USSR, ELECTRIC DISCHARGES, METALS, VAPORIZATION, STEEL

Distribution Statement : APPROVED FOR PUBLIC RELEASE