La fricción de contacto metal-herramienta al estirado por vibraciones ultrasonoras de los alambres de acero de rodamientos
La fricción de contacto metal-herramienta al estirado por vibraciones ultrasonoras de los alambres de acero de rodamientos
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DOI：
10.3989/revmetalm.1999.v35.i6.646
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发表时间：
1999-12
影响因子：
0.8
通讯作者：
M. Susan;Leandru-Gheorghe Bujoreanu
中科院分区：
文献类型：
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作者：
M. Susan;Leandru-Gheorghe Bujoreanu
详细讨论了在超声振动拉拔（UVD）过程中，当模具处于振动波的最大值处，并平行于摩擦力方向驱动时，丝材的摩擦反转机理。通过金属-模具成形区的间歇接触，解释了UVD技术的拉拔力比传统拉拔力小的原因。导出了UVD摩擦系数μ US的关系式，从而可以分析确定拉拔力。在罗马尼亚RUL 1V（AISI 52100）滚珠轴承钢丝的情况下，在拉拔力的分析值和实验值之间已经发现了良好的一致性，与经典拉拔相比，对于低于0.66m/s的拉拔速率，拉拔力降低了5%以上。
The friction reversion mechanism during the ultrasonic vibration drawing (UVD) of wires has been detailed for the case when the die is located at the oscillation maxima of the waves and actuated parallel to the friction force direction. The decrease of the drawing force for the UVD technology as compared to classical drawing has been explained by means of the intermittent contact in the metal-die forming area. A relationship has been derived for the UVD friction coefficient, μ US that allowed the analytical determination of the drawing force. In the case of the Romanian RUL 1V (AISI 52100) ball bearing steel wires, a good agreement has been found between the analytical and the experimental values of the drawing forces that have decreased, as compared to classical drawing, by more than 5 % for drawing rates lower than 0.66m/s.