New tribometer designed for the characterisation of the friction properties at the tool/chip/workpiece interfaces in machining
New tribometer designed for the characterisation of the friction properties at the tool/chip/workpiece interfaces in machining
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新型摩擦磨损试验机专为表征加工中刀具/切屑/工件界面的摩擦特性而设计
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
P. Kapsa
中科院分区：
文献类型：
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作者：
F. Zemzemi;W. Bensalem;J. Rech;A. Dogui;P. Kapsa
这项工作涉及一种新的摩擦磨损试验机的开发设计的刀具/芯片/工件界面在切削过程中的摩擦特性的表征。基于一个平面球接触配置，实验装置能够连续再生的销-工件材料接触。当滑动速度达到16 m/s时，平均接触压力可选择为3GPa。在这种苛刻的条件下，这是无法达到与传统的摩擦计，表观摩擦系数量化平行的热通量传输到销。这个新的系统已被应用到27 MnCr 5退火钢的硬质合金刀具干加工过程中的摩擦性能的表征。在干燥条件下，研究了滑动速度和通过PVD在碳化物销上沉积的附加TiN层的影响。结果表明，滑动速度是影响最大的参数，其次是涂层。版权所有© 2007约翰威利父子有限公司.
This work deals with the development of a new tribometer designed for the characterisation of the frictional properties at the tool/chip/workpiece interfaces in cutting processes. Based on a plane–sphere contact configuration, the experimental set-up enables a continuous regeneration of the pin–workmaterial contact. The average contact pressure can be selected up to 3 GPa under sliding velocities reaching 16 m/s. Under such severe conditions, which are not reachable with conventional tribometers, the apparent friction coefficient is quantified in parallel to the heat flux transmitted to the pin. This new system has been applied to the characterisation of the frictional properties during the dry machining of a 27MnCr5 annealed steel with a carbide cutting tool. The influence of the sliding velocity and of an additional TiN layer deposited by PVD on the carbide pins has been investigated in dry conditions. It has been shown that the sliding velocity is the more influential parameter, followed by the coating. Copyright © 2007 John Wiley & Sons, Ltd.