不鏽鋼電刷式電解抛光工藝的研究

摘要：

        電刷式電解抛光工藝作爲工業實際生產所用的設備目前可參考的內容有限，爲對以後工業生產進行指導，對SUS 304不鏽鋼板材進行電刷式電解抛光實驗，首先選定了液體流量，後采用單因素方法分別研究了不同電流密度、抛光時間、溫度三種工藝參數對SUS 304不鏽鋼電解抛光處理後的表面質量的影響，以電解抛光前後粗糙度Ra的差值來確定最佳工藝參數。基于單因素結果通過正交實驗進行分析發現各工藝參數對粗糙度差值的影響大小排序爲電流密度>溫度>抛光時間。最終結果表明，當電流密度爲42A/dm2，電解液溫度爲50℃，抛光時間爲105s時，樣品電解抛光後的表面質量很好，且最終粗糙度爲0.064μm，達到鏡面光亮，且耐腐蝕性相較于電解抛光前得到很大提高，爲以後電刷工藝的使用提供了依據。

關鍵詞：

       不鏽鋼；電解抛光；表面處理；電刷；耐腐蝕性

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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