Laser Hardening Using Step Functional Heat Input

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概要

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• In this paper, a method of laser hardening is proposed, where CW CO_2 laser beam is used as a step functional heat input instead of a moving heat source. This method is applied to the plane surfaces of cylinders as an example. The hardening process is analyzed theoretically using the theory of heat conduction and considering the following four important subjects synthetically ; (1) temperature dependence of thermophysical properties, (2) absorptance for the laser beam, (3) heating rate dependence of Ac_3 transformation temperature, and (4) cooling rate. The hardened layers can be estimated by this analysis, and good agreement is obtained between the experimental and analytical results.

• 一般社団法人日本機械学会の論文

著者

• Ohmura Etsuji

  Associate Professor Professor Faculty Of Engineering Osaka University

• Namba Yoshiharu

  Associate Professor Professor Faculty Of Engineering Osaka University

• Makinouchi Saburo

  Associate Professor Professor Faculty Of Engineering Osaka University

関連論文

• Laser Hardening Using Step Functional Heat Input

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