METHOD FOR MANUFACTURING MOLD

• Main Authors: TOMINAGA YOSHIAKI, MORIOKA SATOKO
• Format: Patent
• Language: English; Japanese
• Published: 24.01.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a method for manufacturing a mold capable of manufacturing the mold having a high aspect structure with a satisfactory strength by a simple method.SOLUTION: A method for manufacturing a mold having a structure formed by nickel-phosphorous plating according to the present invention has a step of selectively dissolving and removing a portion not covered by a coating, which does not dissolve by nitric acid water, of a nickel-phosphorous plating film in which a surface is discretely covered with the coating, by the nitric acid water to form the structure remaining without being dissolved and removed by the nitric acid water. The dissolving and removal treatment is performed until an area of a side surface of each protrusion remaining without being dissolved and removed is 4 times or more with respect to an area observed from a surface of the nickel-phosphorous plating film.SELECTED DRAWING: Figure 1 【課題】十分な強度をもつ高アスペクト構造を有する金型を、簡便な方法で製造できる金型の製造方法を提供する。【解決手段】本発明のニッケルリンめっきで形成された構造体を有する金型の製造方法は、硝酸水により溶解しない被覆で表面が離散的に覆われたニッケルリンめっき膜の上記被覆で覆われていない部分を、硝酸水によって選択的に溶解除去することで、上記硝酸水によって溶解除去されずに残る上記構造体を形成する工程を有し、上記溶解除去する処理を、溶解除去されずに残る凸部のそれぞれが、上記ニッケルリンめっき膜の面から観察した面積に対して当該凸部の側面の面積が４倍以上になるまで行う。【選択図】図１