| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a plated film while keeping the internal stress of the plated film at a predetermined value. SOLUTION: This electrocasting method includes: electrocasting an article to be treated with nickel while simultaneously feeding currents having current densities of 1 A/dm<SP>2</SP>, 5 A/dm<SP>2</SP>, and 10 A/dm<SP>2</SP>respectively to three pairs of a cathode and an anode in a preparation tank 20; after a lapse of 100 seconds, calculating the internal stress of the plated film with a strain measuring instrument 23 based on a strain quantity measured by a strain gauge 24; and outputting the calculated result to a computer 25. The computer 25 determines a current density at which the internal stress of the plated film is zero by using a table, and outputs a signal corresponding to the determined current density to a rectifier 15. The method also includes starting nickel-electrocasting by feeding the current having the current density at which the internal stress of the plated film is zero to the cathode and the anode in a main tank 10. COPYRIGHT: (C)2008,JPO&INPIT
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