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首页> 外文期刊>Arabian Journal for Science and Engineering >Effects of Cutting Speed on Chip Characteristics and Tool Wear Mechanisms During Dry Machining of Inconel 718 Using UncoatedWC Tool
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Effects of Cutting Speed on Chip Characteristics and Tool Wear Mechanisms During Dry Machining of Inconel 718 Using UncoatedWC Tool

机译：非涂层WC刀具对Inconel 718干式加工中切削速度对切屑特性和刀具磨损机理的影响

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摘要

The present work deals with tool wear and chip characteristics during dry machining of Inconel 718 using uncoated WC tool. Chip morphology (macro/micro), phenomenon of flank, and crater wear are studied. Effects of cutting speed on cutting force, chip reduction coefficient, approximate temperature generated at the machining zone, and depth of flank wear are discussed. Different wear mechanisms are identified. Abrasion, adhesion, built-up-edge formation, chipping off, grooving, chip welding, and burning are found responsible toward tool wear. It is observed that surface finish of the machined part degrades with increase in flank wear depth. Residuals of Ni, Cr, Fe (major constituents of Inconel 718) are detected through EDS analysis of the adhered chip over the tool surface. XRD analysis also identifies oxides of Fe and Nb present therein. Dry machining condition thus promotes the oxidation of few elements of work material.
机译：本工作涉及在使用未涂层的WC工具对Inconel 718进行干式加工期间的工具磨损和切屑特性。研究了切屑形态（宏观/微观），后刀面现象和月牙洼磨损。讨论了切削速度对切削力，切屑减小系数，在加工区产生的近似温度以及后刀面磨损深度的影响。确定了不同的磨损机理。发现磨损，粘着，堆积边缘形成，崩落，开槽，切屑焊接和灼烧是造成工具磨损的原因。可以观察到，加工零件的表面光洁度会随着侧面磨损深度的增加而降低。 Ni，Cr，Fe（Inconel 718的主要成分）的残留物通过对工具表面上附着的切屑的EDS分析进行检测。 XRD分析还鉴定了其中存在的Fe和Nb的氧化物。因此，干式加工条件会促进少量的工作材料元素氧化。

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