Experimental study of the wear behavior of PCBN inserts during cutting of GH4169 superalloys under high-pressure cooling
Experimental study of the wear behavior of PCBN inserts during cutting of GH4169 superalloys under high-pressure cooling
复制标题
高压冷却下PCBN刀片切削GH4169高温合金磨损行为的实验研究
DOI：
10.1007/s00170-017-1333-7
复制
发表时间：
2018-03-01
影响因子：
3.4
通讯作者：
Yu, Yongxin
中科院分区：
文献类型：
--
作者：
Li, Lubin;Wu, Mingyang;Yu, Yongxin
常压冷却下高温合金切削加工中存在刀具磨损严重、断屑不良等问题。针对这些问题，本文提出了一个多晶立方氮化硼（PCBN）的刀具磨损的实验评价加工GH4169，一种镍基高温合金，在高压冷却下。通过对不同冷却液压力下的切削试验，研究了刀具前刀面和后刀面的磨损情况，以及切削力和切屑的变化规律。研究结果表明，高压冷却液能降低刀片后刀面磨损量VB，降低切削力，有利于断屑。因此，高压冷却可以改善镍基高温合金GH4169的切削加工性能。
Serious tool wear and poor chip breaking are the major issues in cutting process of superalloys under normal-pressure cooling. Towards those issues, this paper proposed an experimental evaluation on cutting tool wear of polycrystalline cubic boron nitride (PCBN) in machining of GH4169, a nickel-based superalloys, under high-pressure cooling. The several level pressures of coolant are tested, and then the rake face and flank wear of cutting tool are studied, as well as the cutting forces and the chips. These research result shows that the high-pressure coolant can reduce the wear value VB of inserts flank and the cutting force and is advantageous to chip breaking. Therefore, the machinability of nickel-based superalloys GH4169 can be improved by the high-pressure cooling.