研究目的
To model the thermal analysis of the high-power diode laser hardening process on AISI 4130 steel and predict the depth and width of hardness based on the complete austenite temperature (AC3).
研究成果
The study successfully modeled the thermal analysis of the high-power diode laser hardening process on AISI 4130 steel. The depth and width of hardness were predicted with good agreement between modeling and experimental results. The optical layout designed for beam shaping and homogenization was effective in achieving the desired power density and uniform beam profile.
研究不足
The study is limited to AISI 4130 steel and specific laser parameters. The accuracy of the model depends on the correctness of the input parameters and assumptions made during the simulation.
1：Experimental Design and Method Selection:
The study involved designing an optical layout to achieve a suitable power density and uniform beam profile for the high-power diode laser hardening process. The beam profile was experimentally obtained and compared with modeling results.
2：Sample Selection and Data Sources:
AISI 4130 steel was used as the work-piece. The laser beam profiles were obtained at different distances from the focal plane.
3：List of Experimental Equipment and Materials:
A diode laser stack (DLS) with specific optical characteristics, beam profiler, ZEMAX software for beam profile modeling, and COMSOL Multiphysics software for thermal analysis.
4：Experimental Procedures and Operational Workflow:
The laser beam profile was modeled using ZEMAX software and validated experimentally. The intensity profile was then used as a heat flux input in COMSOL Multiphysics for thermal analysis.
5：Data Analysis Methods:
The thermal analysis results were compared with experimental data to validate the model. The depth and width of hardness were predicted based on the AC3 temperature.
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