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The authors have investigated the deterioration process of the system of Au-plated slip-rings mating with AgPd brushes, which is used mainly in chip-mounters. Past tests have shown that the lubricant is very important for obtaining long lifetime. The lubricant can not only decrease ring wear but also protect the ring from oxidation. In operation the contact voltage drop is generally low and stable...
The authors have been investigating the sliding quality and the deterioration process of the system of Au plated slip-ring and Ag-Pd brush, which is used mainly in the chip-mounter, to realize stable long life time. Through the past tests, it can be made clear that lubricant is very important for long lifetime, because it can not only make ring wear decrease, but also protect the ring from oxidation...
Three types of composite materials containing lamella solid lubricants, such as WS2,C, etc. in the ratio of 40, 50, and 60 (vol.%) respectively were subject to the sliding test at relatively high-speed 1000 (min-1), (1.0(m/s) ) to measure their contact resistance and coefficient of friction simultaneously. The result showed that, with increasing content of solid lubricants by 10 (vol.%), the contact...
WS2-Graphite composite materials (KCL) and WS2-W composite materials (KFC) were tested for each of the three different composition specimens. Examined changes in contact resistance and coefficient of friction for the number of applied current and rotation. As a result, the contact resistance to the applied current KCL material contacts had to change remarkably, but KFC shows change low and stable...
Low-speed sliding test of Cu-Ni-Sn based composite material contacts containing WS2 Recently, the development of sliding contacts having low resistivity is low as well as have mechanical strength is required. In this study, sliding tests was carried out on 3 kinds of new composite material containing lamellar solid lubricant (QWS2 etc.) in the Cu-Sn-Ni alloy. The results showed that excellent sliding...
The authors have conducted a number of experiments with focus on the low-speed sliding characteristics (System about 3.6mm/s) of composite materials containing lamellar solid lubricants such as MoS 2 and WS 2 , and have examined the optimal composition and other conditions. In recent years, however, demands for high-speed sliding contact have increased in various practical fields....
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