在化学镀镍过程中，电脑硬盘驱动臂与挂架接触处易产生黑斑、气泡和脱皮现象。本文分析了产生上述故障的原因，设计了一种挂架上下振动装置，消除了上述故障。
Black spot, air bubble and scaling are usally produced during electroless nickel plating of computer hard disk drivers at the contact site with rack. Causes for the above mentioned defects were discussed. A rack vibration device has been designed to solve the problem.
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