研究目的
Investigating the effect of surface laser texture on tribological properties of cemented carbide materials when dry cutting a titanium alloy.
研究成果
The line-groove textured surface with an area occupancy rate of 10% showed the lowest friction coefficient and best anti-wear effect among the tested textures. The existence of groove textures effectively reserves wear debris, reduces bond wear, and weakens the furrow effect, improving the tribological properties of cemented carbide materials.
研究不足
The study focused on dry friction conditions and specific textures (line, sinusoidal, and rhombic grooves) on cemented carbide. The effects under lubricated conditions or with other texture types were not explored. The study also did not investigate the long-term wear effects beyond 30 minutes of friction.
1:Experimental Design and Method Selection:
The study involved producing three kinds of micro-textures (line, sinusoidal, and rhombic grooves) on cemented carbide surfaces using a laser, with different area occupancy rates. Dry friction and wear experiments were conducted with titanium alloy balls under different loads, and finite element simulation using ABAQUS was employed to analyze stress and temperature changes during the friction process.
2:Sample Selection and Data Sources:
Titanium alloy balls made of TC4 alloy and commercial cemented carbide blanks were used. The composition and properties of these materials were detailed.
3:List of Experimental Equipment and Materials:
A laser marking machine, MFT-EC4000 instrument for electrochemical corrosion and friction testing, SEM for observing surface morphology, and a DSX510 stereomicroscope were used.
4:Experimental Procedures and Operational Workflow:
The cemented carbide samples were textured, polished, and cleaned before friction tests. The friction tests involved applying different loads and measuring friction coefficients over time.
5:Data Analysis Methods:
The friction coefficients were measured and compared across different textures and area occupancy rates. SEM and EDX were used to analyze wear and bond formation.
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