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首页> 外文期刊>Coatings >Influences of TiAlN Coating on Cutting Temperature during Orthogonal Machining H13 Hardened Steel
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Influences of TiAlN Coating on Cutting Temperature during Orthogonal Machining H13 Hardened Steel

机译：TiAlN涂层对H13淬硬钢正交加工切削温度的影响。

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摘要

TiAlN has been widely used in cutting tool coating due to its excellent mechanical and thermal performances. However, the research on the TiAlN coating effect on cutting temperature is not comprehensive enough. In this paper, the friction tests at elevated temperature and hard machining H13 hardened steel tests are conducted by using TiAlN coated tools and uncoated tools, respectively. The results of using TiAlN coated tools are compared with those from using uncoated tools. It is found that the coefficient of friction (COF) between TiAlN coated tool and H13 hardened steel is reduced to 0.63 at 800 °C. The COF value is 0.75 for uncoated tool. Under the same cutting conditions, the TiAlN coating shortens tool-chip contact length. The tangential cutting forces and cutting zone temperatures are decreased with smaller COF and shorter tool-chip contact length. Due to the lower thermal conductivities of TiAlN coating and the Al2O3 oxide layer formatted at tool rake face, the cutting heat conducted into cutting tool substrate was reduced. The cutting temperatures in TiAlN coated tool substrate are decreased by at least 10.68% in this study. The TiAlN coating reduces the cutting temperature by decreasing the cutting heat generation and conduction.
机译：TiAlN由于其优异的机械和热性能而被广泛用于切削刀具涂层。然而，关于TiAlN涂层对切削温度影响的研究还不够全面。在本文中，分别使用TiAlN涂层工具和未涂层工具进行了高温下的摩擦测试和H13淬硬钢的硬加工测试。将使用TiAlN涂层工具的结果与使用未涂层工具的结果进行比较。发现在800°C下，TiAlN涂层工具与H13硬化钢之间的摩擦系数（COF）降低至0.63。对于无涂层工具，COF值为0.75。在相同的切削条件下，TiAlN涂层可缩短刀具与切屑的接触长度。切向切削力和切削区域温度随着较小的COF和较短的刀具-切屑接触长度而降低。由于TiAlN涂层和在刀具前刀面形成的Al2O3氧化物层的导热系数较低，减少了传导到切削刀具基体中的切削热。在这项研究中，TiAlN涂层工具基材的切削温度至少降低了10.68％。 TiAlN涂层通过减少切削热的产生和传导来降低切削温度。

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