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<p>To solve the problems of difficult fabrication and assembly of micro electrodes and poor localization in electrochemical machining, a laser electrochemical hybrid machining technology is proposed in the field of micro machining. This paper utilizes laser surface remelting technology to prepare a corrosion-resistant remelted layer on the substrate surface. Then, mathematical and geometrical models of electrochemical machining microstructure were developed to investigate the effect of electrolyte concentration and velocity on temperature, hydrogen volume fraction, electrolyte conductivity, and current density distribution in the machining region. The correctness of the simulation results is verified by experiments. Experimental results show that the remelted layer prepared under the optimal laser surface remelting parameters has better corrosion resistance, which plays a role in protecting the substrate material from etching during electrochemical machining. The depth, overcut, and taper of the microstructures showed an increasing and then decreasing trend with the increase of electrolyte concentration and velocity. The experimental results were consistent with the simulation analysis.</p>

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Effects of electrolyte on the quality of laser electrochemical hybrid machining microstructures

  • 期刊论文

  • 发表日期：

    2025年5月7日

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  • Li Xiang,
  • Chen Xuehui,
  • Liu Wei,
  • Chen Yuanlong

摘要

To solve the problems of difficult fabrication and assembly of micro electrodes and poor localization in electrochemical machining, a laser electrochemical hybrid machining technology is proposed in the field of micro machining. This paper utilizes laser surface remelting technology to prepare a corrosion-resistant remelted layer on the substrate surface. Then, mathematical and geometrical models of electrochemical machining microstructure were developed to investigate the effect of electrolyte concentration and velocity on temperature, hydrogen volume fraction, electrolyte conductivity, and current density distribution in the machining region. The correctness of the simulation results is verified by experiments. Experimental results show that the remelted layer prepared under the optimal laser surface remelting parameters has better corrosion resistance, which plays a role in protecting the substrate material from etching during electrochemical machining. The depth, overcut, and taper of the microstructures showed an increasing and then decreasing trend with the increase of electrolyte concentration and velocity. The experimental results were consistent with the simulation analysis.