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通过试验证实，滚动式绘图机的主要件摩擦滚轴采用等离子喷涂钴包碳化钨粉末是提高摩擦力、耐磨性，保证圆柱度、同轴度较理想的方法。试验结果表明，钴包碳化钨粉末涂层不仅有较高的摩擦系数，而且具有较高的耐磨性。
The test confirmed that the main components of the rolling plotter friction roller plasma coating cobalt coated tungsten carbide powder is to improve the friction, wear resistance, to ensure that the degree of cylindricity, coaxiality is an ideal method. The test results show that the cobalt-coated tungsten carbide powder coating not only has higher friction coefficient, but also has higher wear resistance.