| 摘要 |
<p>A method of producing a hollow electroformed product of precious metal includes the steps of forming a hollow soluble metal electroformed layer (11) soluble in an inorganic acid on the outer surface of a master model (10) formed of a low melting point material or a chemically soluble material soluble in a chemical, melting or dissolving and removing the master model from inside the soluble metal electroformed layer, coating the outer surface of the remaining soluble metal electroformed layer with a masking layer (12), forming a precious metal electroformed layer (13) on the inner surface of the soluble metal electroformed layer, stripping the masking layer, and dissolving the soluble metal electroformed layer with inorganic acid. <IMAGE></p> |
