Minimal quantity lubrication-MQL in grinding of Ti–6Al–4V titanium alloy
Minimal quantity lubrication-MQL in grinding of Ti–6Al–4V titanium alloy
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DOI：
10.1007/s00170-008-1857-y
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发表时间：
2009-09
期刊：
影响因子：
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通讯作者：
M. Sadeghi;M. J. Haddad;T. Tawakoli;M. Emami
中科院分区：
文献类型：
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作者：
M. Sadeghi;M. J. Haddad;T. Tawakoli;M. Emami
钛及其合金具有独特的高强度-重量比，可在高温下保持，并且具有优异的耐腐蚀性，因此是极具吸引力的材料。钛的主要应用是在航空航天工业中。另一方面，钛及其合金因其热性能差而臭名昭著，被归类为难以加工的材料。钛合金磨削过程中出现的问题主要是由于比能高、磨削区温度高。近年来，干式和半干式加工取得了重大进展，特别是少量润滑（MQL）加工由于其环境友好的特点，已被公认为半干式加工的成功应用。大量的研究表明，MQL加工在实际加工中能够表现出令人满意的性能。然而，对钛合金等特殊合金的MQL磨削以及用于这些合金的MQL磨削的切削液的研究很少。在本研究中，比较了植物酯油和合成酯油的表面质量特性，以确定它们适合MQL的应用。采用Ti-6Al-4V的常规湿式（流体）磨削方法对流体的切削性能进行了评价。结果表明，合成酯油是MQL磨削Ti-6Al-4V的最佳切削液。
Titanium and its alloys are attractive materials due to their unique high strength–weight ratio that is maintained at elevated temperatures and their exceptional corrosion resistance. The major application of titanium has been in the aerospace industry. On the other hand, titanium and its alloys are notorious for their poor thermal properties and are classified as difficult-to-machine materials. The problems that arise during grinding of titanium alloys are attributed to the high specific energy and high grinding zone temperature. Significant progress has been made in dry and semidry machining recently, and minimal quantity lubrication (MQL) machining in particular has been accepted as a successful semidry application because of its environmentally friendly characteristics. A number of studies have shown that MQL machining can show satisfactory performance in practical machining operations. However, there has been few investigation of MQL grinding of special alloys like titanium alloys and the cutting fluids to be used in MQL grinding of these alloys. In this study, vegetable and synthetic esters oil are compared on the basis of the surface quality properties that would be suitable for MQL applications. The cutting performance of fluids is also evaluated using conventional wet (fluid) grinding of Ti–6Al–4V. As a result, synthetic ester oil is found to be optimal cutting fluids for MQL grinding of Ti–6Al–4V.