金刚石微丝拉拔模具微细超声加工技术

Micro-ultrasonic machining technology of diamond dies for drawing metal microwires

金属微丝在是指直径在0.10 mm以下的各种金属丝。金属微丝不但具有金属材料本身固有的一切优点,还具有非金属材料的一些特殊性能,例如高强度,高弹性,良好的导电性、导热性、耐磨防腐性、耐高温、热稳定性,较好的屏蔽、防磁、防辐射性能,不易产生静电效应等,被广泛应用于国民经济各个领域。现代科技的发展需求促使金属微丝向精、微的方向拓展,对金刚石微丝拉拔模具的精度提出了更高的要求,而我国对于该类模具的加工精度与日本、德国相差较远。作者在前期研究的基础上对金属微丝拉拔模具关键技术——微细超声加工技术进行了深入的研究,加工的模具尺寸误差为0.42μm,圆度误差为0.18μm,完全达到了日本和德国的标准,达到国际领先水平。

Metal microwires mean the metal wires with diameter less than O. 10 mm. The metal microwires have not only the characteristics of metal materials but also the special performances of nonmetal materials such as good electric conductivity, good thermal conductivity, high strength, high elasticity, good wear resistance and anti-corrosion, high temperature resistance, heat stability, better screening, antimagnetism , radiation protection, less electrostatic effect, and so on. Therefore the metal microwires are widely used in the various departments of the national economy. The development of the modem technologies urges the metal microwires to progress towards the high precision and minuteness, which puts forward higher request to the precision of diamond dies for drawing the metal microwires. The precision of the dies made in China is much lower than that of Japan and Germany products. The micro-ultrasonic machining of diamond dies for drawing the metal microwire was studied on the basis of the authors＇earlier researches. High precision dies were developed with the dimension error of 0.42 μm and the roundness error of 0.18 μm.