NEWS OF INSTITUTES OF HIGHER LEARNING-FERROUS METALLURGY (SELECTED ARTICLES)
Abstract
The H2 content in a metal after fusion and in the beginning of the final boil, in accordance with existing technology of melting-down of steel with preliminary deoxidation in the furnace, does not show any noticeable effect upon the H2 content in the finished metal. The processes, taking place during the tempering of 60 S2N, 60 KhGSN, 60 KhGSNV and U7 steels were studied by means of a control of the properties of hardness, impact strength, electrical resistance, microstructure, quantity of residual austenite, and microthermo e.m.f. in samples which were bardened at 850 and 900 degrees. The impact strength was determined at temperatures of 20 and -60. An analysis of the microthermo e.m.f. of alloy steel brands, in comparison with properties of the U7 steel, made it possible to make more precise the temperature intervals of the transformation phases during the tempering of complex alloy steels. A comparison of the studied properties shows the possibility of using complex alloy steel for the production of impact tools, bits, dies, etc., which are used in temperature conditions of 20 and -60. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 07, 1962
- Accession Number
- AD0284159
Entities
Organizations
- National Air and Space Intelligence Center