研究目的
Investigating the technology of laser cementation to increase the operational stability and wear resistance of woodworking tools.
研究成果
The technology of laser cementation of woodworking tools was developed, increasing the operational wear resistance no less than 2 times. The structural composition of martensite, residual austenite, and carbides positively affects the wear resistance. Recommended modes of laser cementation for steels 6CrSi, 9CrSi, and CrWMn were offered.
研究不足
The study found a tendency of 9CrSi and CrWMn steels to form hot cracks of the internal pores during laser cementation by the offered method.
1：Experimental Design and Method Selection:
The study employed laser cementation technology to enhance the wear resistance of woodworking tools. The methodology included carbon saturation of the surface and the formation of martensite and residual austenite.
2：Sample Selection and Data Sources:
Blade woodworking tools made of steels 6CrSi, 9CrSi, CrWMn were used.
3：List of Experimental Equipment and Materials:
A stand based with a 1-kW disk laser, carbon electrode, PMT-3 microhardometer, Neophot 21 optical microscope.
4：Experimental Procedures and Operational Workflow:
The laser cementation process involved fixing the carbon electrode at 5 mm from the treated surface, with the treatment area protected with argon. The laser beam speed was set at 20 mm/s and 30 mm/s.
5：Data Analysis Methods:
Microhardness measurements, metallographic studies, and wear resistance tests were conducted.
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