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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part B. Journal of engineering manufacture >Performance of AlTiN- and diamond-coated carbide tools in dry high-speed milling of electro discharge machining graphite
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Performance of AlTiN- and diamond-coated carbide tools in dry high-speed milling of electro discharge machining graphite

机译：ALTIN - 镀锌碳化物工具在干高速铣削石墨石墨石墨中的性能

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摘要

Electrodes made of graphite material are widely used for electro discharge machining. The performance of physical vapor deposition AlTiN and chemical vapor deposition diamond-coated carbide end-milling tools in dry high-speed milling of electro discharge machining graphite was investigated, also adopting an uncoated one as a comparison. The quality of as-deposited diamond film was evaluated by Raman spectroscopy. The adhesion between the coating and the substrate was assessed by indentation test. The tool life and wear mechanism of the milling tools, the cutting forces during tests, as well as the roughness of processed surfaces were systematically studied. It is found that the diamond coating has lower adhesion than the AlTiN coating under the same load. Coating delamination and chipping, irregularly zigzag side flank wear, concave structure on the cutting edge are primary wear patterns for the diamond-coated tool. While different primary wear patterns, including uniform polishing abrasive flank wear and crater rake wear, are observed on the AlTiN-coated tool. Besides, the total cutting force of the diamond-coated tool is larger than that of the AlTiN-coated tool when the diamond-coated tool side flank wear value reaches 0.06?mm, attributed to the different wear patterns. Another notable result is clarified that the chipping of the diamond coating can cause significant increment in the feed force, radial force and worked surface roughness.
机译：石墨材料制成的电极广泛用于电气放电加工。研究了物理气相沉积ALTIN和化学气相沉积金刚石涂层碳化物涂层碳化物端铣刀的性能，对电放电加工石墨的干燥高速研磨，也采用未涂层作为比较。通过拉曼光谱法评估沉积的金刚石膜的质量。通过压痕试验评估涂层和基材之间的粘附性。系统地研究了铣削工具的刀具寿命和磨损机构，切割力以及处理表面的粗糙度。发现金刚石涂层的粘附性低于同一负载下的Altin涂层。涂层分层和碎裂，不规则的锯齿侧面侧面磨损，切削刃上的凹形结构是金刚石涂层工具的初级磨损图案。虽然在ALTIN涂层工具上观察到不同的初级磨损图案，包括均匀的抛光磨损侧面磨损和火山口耙磨损。此外，当金刚石涂层的工具侧侧面磨损值达到0.06Ωmm时，金刚石涂层工具的总切削力大于Altin涂层工具的总切削力。归因于不同的磨损图案。阐明了另一种显着的结果，使得金刚石涂层的碎裂会导致进料力，径向力和工作表面粗糙度的显着增量。

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