| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method for a high precision metal fine tube by an electroforming process. SOLUTION: The production method employs an electroforming process by a cathode rotary system. For the fundamental blending of an electroforming plating bath, to a metal compound component(s) such as simple salt, complex salt, fluoroboride, pyrophosphate, sulfamate or amine-based salt as the main component(s), if required, a chloride component(s) and a pH buffer component(s) are composed, and further, an organic sulfur compound component(s) including a prescribed amount of salt is added. The organic sulfur compound including the salt ionized in the electroforming plating bath gives the formation of a peelable film causing a release effect on the surface of the base material core wire as the cathode by the application of direct voltage in the electroforming, or applies internal stress of slight compression to an electroformed body to promote its peeling. In this way, regarding the electroformed body obtained by uniformly electro-depositing the metals on the surface of the base material core wire with the electroforming plating bath while straightly supporting both the edge parts of the base material core wire and rotating the same, the core wire as the base material is pulled out or extruded, thus can be easily removed to produce fine pores. Thus, the high precision metal fine tube having a high concentricity in which the centers of the inside diameter and outside diameter coincide can be produced. COPYRIGHT: (C)2007,JPO&INPIT
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