Built-in thin film thermocouples in surface textures of cemented carbide tools for cutting temperature measurement
Built-in thin film thermocouples in surface textures of cemented carbide tools for cutting temperature measurement
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硬质合金刀具表面纹理中的内置薄膜热电偶用于测量切削温度
DOI：
10.1016/j.sna.2018.07.017
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发表时间：
2018-08-15
影响因子：
4.6
通讯作者：
Yin, Zhouping
中科院分区：
文献类型：
--
作者：
Li, Jindang;Tao, Bo;Yin, Zhouping
本文提出了嵌入薄膜热电偶的硬质合金刀具，用于监测钛合金加工过程中的刀具温度分布。为了保护薄膜传感器免受流动切屑的影响，提出了在商用碳化钨切削刀片的前刀面上制备微槽并将薄膜传感器安装在槽中的制造工艺。在凹槽中植入6个K型薄膜热电偶，深度约为100μm，热结面积为100μm×50μm。测试表明，传感器与合金基体绝缘可靠，测量具有良好的线性度和均匀性。在钛合金 (Ti6AI4V) 车削工艺中评估所制造刀片的性能，切削温度接近在线获得的连续和断续切削实验的刀具-切屑界面。制造的传感器在切割过程中表现出良好的灵敏度和更高的耐用性。 (C) 2018 Elsevier B.V. 保留所有权利。
Cemented carbide tools embedded with thin film thermocouples are presented in this paper, to monitor the tool temperature distribution in machining of titanium alloys. In order to protect the thin film sensors from the flowing chips, the fabrication processes which include preparation of micro-grooves on the rake face of commercial tungsten carbide cutting inserts and installation of the thin film sensors in the grooves are proposed. Six K-type thin film thermocouples are implanted in the grooves at a depth of about 100 mu m with a 100 mu m x 50 mu m hot junction area. The tests show that the sensors are reliably insulated with the alloy substrate and have good linearity and uniformity in the measurement. The performance of the fabricated inserts are evaluated in a titanium alloy (Ti6AI4V) turning process with the cutting temperature close to the tool-chip interface obtained online for both continuous and interrupted cutting experiments. The fabricated sensors show good sensitivity and improved durability during the cutting processes. (C) 2018 Elsevier B.V. All rights reserved.