Abstract
Fabrication of hole by using laser and electrochemistry (FH-LE) is presented in this study. First, under electrolyte, a coating hole is milled by the photochemical effect of ultraviolet laser. Second, an alloy hole is machined by electrochemical machining (ECM) based on the coating hole. A hole without recast layer on coated alloy is obtained. It solves the problem that insulation coating is not holed by single ECM. The interaction of laser and debris is considered to model laser machining (LM) of coating. Decomposition potential is taken into account to model ECM of alloy. An accurate simulation model of FH-LE is established. The final shape of a coated alloy hole is calculated. It provides the basis for the experimental study. The effects of process parameters on hole characteristics are experimentally investigated and the optimized parameters are given. Coated alloy holes are machined by FH-LE. The experimental results show that the coated alloy holes are clean and have no residue. No recast layer is produced on the wall of the holes.
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