High speed MQL finish-turning of Inconel 718 with different coated tools
High speed MQL finish-turning of Inconel 718 with different coated tools
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DOI：
10.1016/j.jmatprotec.2007.04.052
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发表时间：
2007-10-01
影响因子：
6.3
通讯作者：
Obikawa, T.
中科院分区：
文献类型：
--
作者：
Kamata, Y.;Obikawa, T.
采用三种不同类型的涂层硬质合金刀具对镍基高温合金Inconel 718进行了微量润滑精车试验。三种选择的涂层是TiCN/Al 2 O3/TiN（CVD）、TiN/AlN超晶格（PVD）和TiAlN（PVD）。切割速度设定为相对较高的值：1和1.5 m/s。在1.0 m/s的切削速度下，TiCN/Al 2 O3/TiN涂层的MQL切削性能最好，TiN/AlN超晶格涂层的MQL切削性能次之。TiCN/Al_2O_3/TiN涂层的刀具寿命最长，但表面光洁度较差。发现用MQL精车Inconel 718时存在最佳气压寿命。在以氩气为载气的油雾实验中发现，MQL载气对冷却切割点起着重要作用。当切削速度增加到1.5 m/s时，刀具寿命急剧缩短。此外，在MQL切削的表面光洁度增加，因为磨损的刀具后刀面变得粗糙。(c)2007 Elsevier B. V.保留所有权利。
Minimal quantity lubrication (MQL) was applied to finish-turning of a nickel-base superalloy, Inconel 718, with three different types of coated carbide tools. Three selected coatings were TiCN/Al2O3/TiN (CVD), TiN/AIN superlattice (PVD) and TiAlN (PVD). Cutting speeds were set at relatively higher values: 1 and 1.5 m/s. At a cutting speed of 1.0 m/s, TiCN/Al2O3/TiN coating in MQL cutting exhibited the best performance while TiN/AIN superlattice coating in MQL cutting exhibited the second best performance. The longest tool life was attained by TiCN/Al2O3/TiN coating in wet cutting, but the surface finish was not good. It was found that there is the optimum air pressure life in finish-turning of Inconel 718 with MQL. It was also found in an experiment using argon as a carrier gas of oil mist that the carrier gas of MQL plays an important role for cooling the cutting point. As the cutting speed was increased to 1.5 m/s, the tool lives were drastically shortened. In addition, the surface finish in MQL cutting increased because the worn tool flank surface became rough. (c) 2007 Elsevier B.V. All rights reserved.