电刷式电解抛光工艺作为工业实际生产所用的设备目前可参考的内容有限，为对以后工业生产进行指导，对SUS 304不锈钢板材进行电刷式电解抛光实验，首先选定了液体流量，后采用单因素方法分别研究了不同电流密度、抛光时间、温度三种工艺参数对SUS 304不锈钢电解抛光处理后的表面质量的影响，以电解抛光前后粗糙度Ra的差值来确定最佳工艺参数。基于单因素结果通过正交实验进行分析发现各工艺参数对粗糙度差值的影响大小排序为电流密度>温度>抛光时间。最终结果表明，当电流密度为42A/dm2，电解液温度为50℃，抛光时间为105s时，样品电解抛光后的表面质量很好，且最终粗糙度为0.064μm，达到镜面光亮，且耐腐蚀性相较于电解抛光前得到很大提高，为以后电刷工艺的使用提供了依据。
不锈钢；电解抛光；表面处理；电刷；耐腐蚀性
Abstract
The brush electropolishing process is the actual industrial production of equipmentused in the currently limited reference, to guide future industrial production, brushelectropolishing experiments on SUS 304 stainless steel plates, first selected the liquidflow, after the use of the single‐factor method were studied different current density,polishing time, temperature three process parameters on SUS 304 stainless steel afterelectro‐polishing treatment. The effect of the surface quality of SUS 304 stainless steelafter electropolishing was investigated using a single‐factor method, and the difference in roughness Ra before and after electropolishing was used to determine the optimum process parameters. Based on the single‐factor results, orthogonal experiments were carried out to find that the influence of each process parameter on the difference in roughness was ranked as current density > temperature > polishing time. The final results show that when the current density is 42 A/dm2, the electrolyte temperature is 50 °C and the polishing time is 105 s, the surface quality of the sample after electro‐polishing is very good and the final roughness is 0.064 μm, which is mirror bright and the corrosion resistance is greatly improved compared to that before electropolishing,which provides a basis for the use of the brushing process in the future.
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