Patent ID: 7270732
Filing Date: 2007-09-18
Classification: C25D

Abstract:
1. A method for enhancing bonding strength of a metal spraying thickened layer of electroformed mold inserts, comprising the steps of: a. providing an original mandrel; b. forming an electroformed metal shell mold by submerging the original mandrel in a first electroforming solution; c. forming a plurality of stereoscopic reinforced ribs on the electroformed metal shell mold by metal spraying; d. forming a first electroformed cover by submerging the electroformed metal shell mold attached with the stereoscopic reinforced ribs in a second electroforming solution to couple the stereoscopic reinforced ribs and the electroformed metal shell mold in an integrated body; e. spraying a metal thickened layer on the electroformed metal shell mold attached with the stereoscopic reinforced ribs to form an electroformed mold insert; f. grinding the electroformed mold insert and submerging the electroformed mold insert in a third electroforming solution to form a second electroformed cover; and g. separating the original mandrel and the electroformed mold insert.