CONTROLLING THE DEPTH OF SURFACE HARDNESS IN RAILS

Ultrasonic control of hardening depth during the process of surface hardening of rails is discussed. The processes of ultrasonic energy reflection, scattering, and transformation of vibrations are reviewed. Illustrations showing the relation of size of energy losses of the ultrasonic vibrations in steel as a function of the ratio of wavelength to average grain size are presented. The process used for monitoring the depth of hardening is described. The device used for the monitoring is briefly discussed, as well as the methods used for arranging the emitters and receivers on a surface of the test specimen. It was concluded that at certain ratios between the wavelength and the average grain dimensions in the zones of hardening and of raw metal, it is possible to monitor the hardness depth of rails heat treated by high-frequency induction-current heating.

• Corporate Authors:

  All-Union Scientific Res Inst of Railroad Transp

  3-aya Mytishchinskaya Ulitsa 10
  Moscow I-164,   USSR 
• Authors:
  • Zarochentsev, G V
  • Yushkevich, I N
• Publication Date: 1974

Language

• Russian

Media Info

• Features: Figures; References;
• Pagination: p. 36-43
• Serial:
  • Trudy VNIIZT
  • Issue Number: 508
  • Publisher: All-Union Scientific Res Inst of Railroad Transp

Subject/Index Terms

• TRT Terms: Heat treated rail; Metal hardening; Rail steel; Railroad rails; Ultrasonic waves
• Old TRIS Terms: Rail hardening; Rail steel metallurgy
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 00173051
• Record Type: Publication
• Files: TRIS
• Created Date: May 18 1978 12:00AM