Accession Number : AD0693496

Title :   INCREASING THE WEAR RESISTANCE OF STEEL PARTS BY SURFACE HARDENING,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Alekseev,P. G.

Report Date : 17 JUL 1969

Pagination or Media Count : 12

Abstract : The effect of plastic deformation on the wear resistance of 10, 20, 45, and U12 steels was studied on cylindrical experimental specimens in a MI-1M machine. The degree of wear was obtained by removing crescent-shaped fragments from the specimen and determining their weight loss on an analytical balance. The microhardness of the specimens was determined with PMT-3 apparatus and the surface roughness with a Kalibr VEI profile meter. The experimental results are shown. The wear resistance of these steels was increased considerably by surface plastic deformation; the deformation pressure constitutes the most important single factor determining the wear resistance of a treated surface. For pressures below optimal, the wear resistance of a surface falls below the maximum, while application of pressures in excess of the optimal results in an over-hardened surface.

Descriptors :   (*MACHINING, METALS), (*TOOL STEEL, CASE HARDENING), (*WEAR RESISTANCE, TOOL STEEL), MACHINE TOOLS, CUTTING TOOLS, STRAIN HARDENING, PRESSURE, DEFORMATION, SURFACE ROUGHNESS, FRICTION, HARDNESS, SURFACE PROPERTIES, TEST METHODS, USSR

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE