研究目的
Investigating the use of ultrashort laser pulses for the autonomous production of highly accurate metallic and diamond tools, focusing on small and micro tools.
研究成果
Ultrashort laser pulses are highly suitable for manufacturing small and micro tools with high accuracy, enabling autonomous production without human interaction. The technology extends the product portfolio by processing any type of ultrahard material and allows for the coating of metallic-based tools, demonstrating good adhesion and uniformity.
研究不足
Laser processing cannot match the volume removal rates of conventional technologies for large tools. The study concentrates on small and micro tools where laser processing's advantages are more pronounced.
1：Experimental Design and Method Selection:
Utilized ultrashort laser pulses for cold ablation characteristics to minimize heat input and avoid processing forces or tool wear.
2：Sample Selection and Data Sources:
Focused on small and micro tools ranging from ? = 0.2 mm to ? = 10 mm, made from tungsten carbide, high-speed steel, and ultrahard materials like PCD, CVD-D, and MCD.
3：2 mm to ? = 10 mm, made from tungsten carbide, high-speed steel, and ultrahard materials like PCD, CVD-D, and MCD.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: EWAG LASER LINE ULTRA machine, focused-ion beam (FIB) for cross-sections, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), hardness indentation tests.
4：Experimental Procedures and Operational Workflow:
Laser processing of tools, analysis of heat-affected zones (HAZ), coating with TiAlN or AlTiN by PVD, adhesion tests including visual inspection, EDX, hardness indentation, and destructive break tests.
5：Data Analysis Methods:
SEM and EDX for coating uniformity and composition analysis, hardness indentation tests for coating adhesion, FIB for HAZ analysis.
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