研究目的
Investigating the combined effect of laser radiation and cryogenic treatment on the hardness and wear resistance of metal surfaces.
研究成果
The combined method of laser hardening with cooling increases the hardness of the hardened zone by up to 15% and its thickness by up to 20% compared to laser exposure without cooling. This technology effectively changes the physicochemical and mechanical properties of surface layers, enhancing the operational characteristics of products.
研究不足
The study focuses on steel 45, and the results may not be directly applicable to other materials without further research.
1：Experimental Design and Method Selection:
The study combines laser radiation with cryogenic treatment to enhance the surface hardness and wear resistance of metal parts.
2：Sample Selection and Data Sources:
Steel 45, a high-quality structural carbon steel, was used as the research object.
3：List of Experimental Equipment and Materials:
An automated laser installation LRS-150A was used for laser hardening.
4：Experimental Procedures and Operational Workflow:
Laser hardening was performed followed by cooling to achieve higher hardness and wear resistance.
5：Data Analysis Methods:
The hardness and thickness of the hardened zone were measured and compared between samples treated with laser alone and those treated with laser plus cooling.
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