2020-11-23
Miniature conductive slip-ring refers to the conductive slip-ring with small volume and many signal transmission paths, which is mainly used for gyro platform, artillery control, navigation guidance and other aerospace equipment.
The manufacturing technology of micro conductive slip ring is very difficult, and ring welding is one of the key and difficult technologies.
On the one hand, this is because the miniature conductive slip-ring structure is small in size, the outer diameter of the ring body is basically 6mm, and the thickness is about 0.3mm. Such a small and thin ring body needs to be welded with wires to meet the quality requirements of small and firm welding spots, which is very high for welders.Otherwise, the solder joint strength does not reach the standard, the virtual welding situation is serious, the product defect rate greatly increases;Otherwise, due to the narrow operating space, low welding efficiency, high labor cost, or even affect the entire production schedule, leading to delivery delay.
Miniature conductive slip ring, on the other hand, generally adopts the integration of pouring process, therefore, in the process of vacuum casting of epoxy resin adhesive with epoxy adhesive and ring piece do not match the thermal expansion coefficient and under the environment of high and low temperature, epoxy resin and solder joints under stress of ring plate interface, solder joint loss risk is relatively high, thus affecting the quality of the product.
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