Cutting performance of PVD-coated carbide and CBN tools in hardmilling
Cutting performance of PVD-coated carbide and CBN tools in hardmilling
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DOI：
10.1016/j.ijmachtools.2010.10.007
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发表时间：
2011-02-01
影响因子：
14
通讯作者：
Ueda, Takashi
中科院分区：
文献类型：
--
作者：
Okada, Masato;Hosokawa, Akira;Ueda, Takashi
研究了CBN刀具和PVD涂层硬质合金刀具端铣淬硬钢的切削性能。在高速干式硬质合金铣削中，应用了两种类型的CBN刀具：富CBN型和普通型。另一方面，在相对低速铣削的情况下，选择了一些涂层硬质合金刀具，其中在K10和P30级硬质合金上沉积了四种涂层膜，TiN、TiCN、TiAlN和多层TiAlN/AlCrN。切削性能主要通过刀具磨损、切削温度、切削力和表面粗糙度来评价。在使用普通CBN刀具对淬硬碳钢进行干式切削时，随着切削速度的增加，刀具温度急剧上升，在切削速度为600 m/min时，刀具温度达到约850 ℃。在富含CBN的刀具中，由于其高导热性，切削温度降低了50 ℃以上。值得注意的是，即使在两种CBN刀具中切削长度为156 m时，也没有观察到刀具磨损或切削刀具损坏。在涂层硬质合金刀具的情况下，TiN-，TiCN-和TiAlN涂层硬质合金刀具的温度上升，因为刀具磨损的进展，切削进行，但TiAlN/AlCrN涂层硬质合金刀具几乎没有上升，由于很少的刀具磨损。当基体材料为K10级硬质合金时，刀具温度低于任何涂层的P30。刀具后刀面磨损主要取决于涂层的硬度和氧化温度。(c)2010爱思唯尔有限公司版权所有。
In this study, cutting performance of CBN tools and PVD-coated carbide tools in end-milling of hardened steel was investigated. In high-speed dry hard milling, two types of CBN tools were applied: the CBN-rich type and an ordinary one. In the case of relatively low-speed milling, on the other hand, a few coated carbide tools were selected where four kinds of coating films, TiN, TiCN, TiAlN and multi-layered TiAlN/AlCrN, were deposited on the K10 and P30 grade carbide. The cutting performance was mainly evaluated by tool wear, cutting temperature, cutting force and surface roughness. In dry cutting of hardened carbon steel with the ordinary CBN tool, the cutting tool temperature rose rapidly with increase in cutting speed; and tool temperature reached approximately 850 degrees C at the cutting speed of 600 m/min. In the case of the CBN-rich tool, the cutting temperature decreased by 50 degrees C or more because of its high thermal conductivity. It is remarkable that tool wear or damage on a cutting tool was not observed even when the cutting length was 156 m in both CBN tools. In the case of coated carbide tools, the temperatures of TiN-,TiCN- and TiAlN-coated carbide tools rose as cutting proceeded because of the progress of tool wear, but that of TiAlN/AlCrN-coated carbide tool hardly rose due to little tool wear. When the base material was K10 grade carbide, tool temperature was lower than that of P30 with any coating. The tool flank wear depends considerably on hardness and oxidizing temperature of the coating film. (c) 2010 Elsevier Ltd. All rights reserved.