研究目的
To increase the lubricant retention ability for cutting tools based on surface modification to improve the performance and sustainability of machining processes.
研究成果
Laser texturing techniques can effectively modify the lubricant retention behavior of WC-Co surfaces, improving the wear resistance of cutting tools under machining processes while maintaining the same surface finish on machined parts as non-textured tools.
研究不足
The presence of micro-cracks caused by the cooling process can be reduced by specific combinations of Ed and Vs values. The study was focused on linear textures specifically developed to improve the lubricant retention behavior of the WC-Co surfaces.
1:Experimental Design and Method Selection:
Laser texturing techniques were used to modify micro-geometrical features of Carbide (WC-Co) surfaces. Different geometries of the textured tracks (single spots, linear tracks, circular tracks) were studied by changing the laser irradiation parameters of energy density of pulse (Ed) and scanning speed of the beam (Vs).
2:Sample Selection and Data Sources:
Carbide (WC-Co) samples of 24 mm diameter and 2mm thickness were prepared using Wire Electro-Discharge Machining (WEDM).
3:List of Experimental Equipment and Materials:
An Ytterbium fiber infrared laser (Rofin EasyMark F20 system) with a 1070±5 nm wavelength, 60 μm spot diameter and 100 ns pulse width was used for texturing. A roughness measure station Mahr Perthometer Concept PGK120 was used for roughness measurements.
4:Experimental Procedures and Operational Workflow:
Samples were textured under an open-air atmosphere. After laser texturing, samples were analyzed for micro-geometrical properties and lubricant retention ability. Machining tests were performed by turning process on a lathe.
5:Data Analysis Methods:
Roughness parameters were measured to study micro-geometrical properties. Lubricant retention ability was measured through the contact angle between liquid and solid phases.
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