Abstract
The wear produced from the sliding contact in the pantograph slide and contact line system, has a direct relationship with the contact load. In premise of the current carrying performance conditions, there will be erosion resistance wear when the load is smaller, but mechanism wear when the load is bigger. In this article, many experiments through the leaching copper carbon sliding plate and Silver copper wire were conducted to study the wear characteristics of the sliding electrical contact in different load flow, speed and the changes of load. And some variables are fixed, then the others will be changed to find the variety of wear, also the data have been saved. After analyzing the relationship of different conditions, a model including the wear and the contact load will be produced, then draw the function equation include speed and others variables. The coefficient of which will be devised based on the saved data using the least-square method. And some experimentations are taken to validate the model, which could adequately reflect the function relationship between the wear and contact load. Also this model will be given a theory basis on the best load designing.
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