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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >Tool-wear analysis in cryogenic machining of NiTi shape memory alloys: A comparison of tool-wear performance with dry and MQL machining
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Tool-wear analysis in cryogenic machining of NiTi shape memory alloys: A comparison of tool-wear performance with dry and MQL machining

机译：NiTi形状记忆合金低温加工中的刀具磨损分析：干磨和MQL加工的刀具磨损性能比较

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摘要

Extremely high tool-wear rate in machining of NiTi shape memory alloys (SMAs) is one of the major reasons for limiting the use of conventional machining processes on NiTi. The present study begins to address this issue by examining the effects of cryogenic cooling on tool-wear rate and progressive tool-wear by comparing the new findings from cryogenic machining with results obtained from minimum quantity lubrication (MQL) and dry machining conditions. Flank wear at the nose region, notch wear at the depth of cut boundary, and resulting machining performance criteria such as force components and surface quality of machined samples were studied. The findings from this research demonstrate that cryogenic cooling has a profound effect on controlling tool-wear rate and that the progressive tool-wear in machining of NiTi shape memory alloys can be significantly reduced by cryogenic machining.
机译：NiTi形状记忆合金（SMAs）的加工中极高的刀具磨损率是限制在NiTi上使用常规加工工艺的主要原因之一。本研究通过将低温加工的新发现与最小量润滑（MQL）和干式加工条件下获得的结果进行比较，研究低温冷却对刀具磨损率和渐进式刀具磨损的影响，从而开始解决这个问题。研究了机头区域的后刀面磨损，切削边界深度处的缺口磨损，以及由此产生的加工性能标准，例如力分量和加工样品的表面质量。这项研究的结果表明，低温冷却对控制刀具磨损速率具有深远的影响，而通过低温加工可以显着减少NiTi形状记忆合金加工中的渐进刀具磨损。

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