Practical Introduction of Laser Transformation Hardening.
نویسندگان
چکیده
منابع مشابه
Evaluating Wear Properties of AISI 420 Martensitic Stainless Steel after Laser Transformation Hardening
As the turbine industries need to manufacture turbine blades made of martensitic stainless steel AISI 420 with high toughness and wear resistance, local laser hardening has become more and more important. In this research, surface of the samples was initially hardened by high-power pulsed laser beam; then, optimum parameters of hardening were calculated and wear resistance of surface hardened s...
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The process of laser beam transformation hardening is principally controlled by two independent parameters, the absorbed laser power on a given area and the interaction time. These parameters can be transformed into two functional parameters: the maximum surface temperature and the hardening depth. It has been proved that with a constant hardening depth the results (hardness. residual stress. e...
متن کاملOptimal control of laser hardening
We present a mathematical model for the laser surface hardening of steel. It consists of a nonlinear heat equation coupled with a system of ve ordinary diierential equations to describe the volume fractions of the occuring phases. Existence, regularity and stability results are discussed. Since the resulting hardness can be estimated by the volume fraction of martens-ite, we formulate the probl...
متن کاملevaluating wear properties of aisi 420 martensitic stainless steel after laser transformation hardening
as the turbine industries need to manufacture turbine blades made of martensitic stainless steel aisi 420 with high toughness and wear resistance, local laser hardening has become more and more important. in this research, surface of the samples was initially hardened by high-power pulsed laser beam; then, optimum parameters of hardening were calculated and wear resistance of surface hardened s...
متن کاملThermal Analysis of Laser Hardening for Different Moving Patterns
Transient thermal field in laser surface hardening treatment of medium carbon steel was analyzed by employing both three-dimensional analytical model and finite element model. In finite element model the laser beam was considered as a moving plane heat flux to establish the temperature rise distribution in the work-piece, while in analytical model laser beam was considered as an internal heat s...
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ژورنال
عنوان ژورنال: Journal of the Japan Welding Society
سال: 1995
ISSN: 0021-4787,1883-7204
DOI: 10.2207/qjjws1943.64.150