| 摘要 |
PURPOSE:To increase the electrolytic speed of an anode part to the electrolytic speed or more of the other anode part by irradiating a part of the anode with laser beam while an electrolytic etching is being performed. CONSTITUTION:The material to be processed is used as an anode 2, the anode 2 is opposed to a cathode 3 in an electrolyte, and an etching process is performed electrochemically on the anode 2 applying electricity between electrodes 2 and 3. At that time, the electrolytic etching is performed while a laser beam 7 is made to irradiate on the part whereon the concaved part or a hole part of the anode 2 will be formed. As a result, the electrolytic speed of the irradiated anode part is accelerated to that or in excess of the other anode part, thereby enabling to partially form a concaved part or a hole part. |
