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Abstract <p>The results of tests aimed at reconditioning the geometry of the valve bevel of the YAMZ-238 diesel engine are presented. The wear and the existing coating methods are analyzed. Experiments for applying a hardening layer by HFC boronation are conducted. Comparative wear and heat resistance tests are made. It is shown that the reconditioned valve has a heat resistance twice as high as the serial counterpart. The bevel reconditioning technology is developed.</p>

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Diesel Engine Valve Bevel Reconditioning Technology

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • V. P. Lyalyakin,
  • Yu. N. Rozhkov,
  • A. V. Svotnev,
  • A. G. Ipatov

摘要

Abstract

The results of tests aimed at reconditioning the geometry of the valve bevel of the YAMZ-238 diesel engine are presented. The wear and the existing coating methods are analyzed. Experiments for applying a hardening layer by HFC boronation are conducted. Comparative wear and heat resistance tests are made. It is shown that the reconditioned valve has a heat resistance twice as high as the serial counterpart. The bevel reconditioning technology is developed.