锻压技术

超声振动对TA2钛合金板材与其接触面摩擦系数的影响

英文标题：Influence of ultrasonic vibration on friction coefficient between TA2 titanium alloy sheet and its contact surface

作者：高铁军刘少青王硕矫志辉

分类号：TG306

出版年,卷(期):页码：2020,45(10):151-155

摘要：

基于平板滑动摩擦实验和超声振动辅助成形原理，设计超声振动平板滑动摩擦实验装置，以TA2钛合金板材为研究对象，45号钢为接触目标，分析了超声振幅、频率、接触面粗糙度及接触力等工艺参数对TA2/45号钢之间的摩擦力及摩擦系数的影响规律，得到了不同工艺参数条件下的摩擦系数以及摩擦力与滑动距离之间的变化关系。研究结果表明：施加超声振动可以降低TA2/45号钢之间的摩擦力及摩擦系数，相较于超声振幅，超声频率对摩擦系数的影响更大；同时，摩擦系数随着接触面粗糙度的减小而减小，加入一定润滑剂后效果更为显著；而在一定接触力范围内，接触力的大小对摩擦系数的影响较小。

Based on the sheet sliding friction test and ultrasonic vibration assisted forming principle, the sheet sliding friction experimental device with ultrasonic vibration was designed. Taking TA2 titanium alloy sheet as the research object and the 45 steel as the contact target, the influence laws of process parameters for ultrasonic amplitude, frequency, contact surface roughness and contact force on friction force and friction coefficients between TA2 titanium alloy and 45 steel were analyzed, and the friction coefficients under different process parameters and the relationships between friction coefficient and sliding distance were obtained. The results show that the application of ultrasonic vibration can reduce the friction force and friction coefficient between TA2 titanium alloy and 45 steel. Compared with the ultrasonic amplitude, the ultrasonic frequency has a greater influence on the friction coefficient. At the same time, the friction coefficient decreases with the decreasing of contact surface roughness, and the effect is more significant after adding a certain lubricant. However, within a certain range of contact force, the influence of contact force on the friction coefficient is smaller.

基金项目：

国家自然科学基金资助项目（51575364）；辽宁省高等学校创新人才计划（R2017069）；沈阳市中青年创新人才计划（RC180189）

高铁军（1977-），男，博士，教授 E-mail：tiejun_gao@163.com

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