METHOD FOR PRODUCING HARD FILM-COATED TOOL

• Main Authors: KAWAGUCHI SEIJI, SATO HIDEKI, MARUYAMA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 01.12.2022
• Subjects: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL; 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; COMBINED OPERATIONS; DIFFUSION TREATMENT OF METALLIC MATERIAL; GRINDING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; OTHER WORKING OF METAL; PERFORMING OPERATIONS; POLISHING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; UNIVERSAL MACHINE TOOLS

To provide a production method that removes carbides on and inside a material of a high-speed steel tool and applies a hard film free of voids onto the tool material.SOLUTION: A method for producing a hard film-coated tool includes: a first step for subjecting a material of a high-speed steel tool to shot-peening treatment; a second step for, after the first step, immersing the material of a high-speed steel tool in a mixed aqueous solution of pyrophosphate and potassium metaphosphate and a hydrogen peroxide aqueous solution; and a third step for, after the second step, coating the material of the high-speed steel tool with a hard film.SELECTED DRAWING: Figure 4 【課題】高速度工具鋼製工具の素材表面および素材内部に存在する炭化物を除去し、空隙の無い硬質皮膜を工具素材の表面に被覆する製造方法を提供することを課題とする。【解決手段】本発明の硬質皮膜被覆工具の製造方法は、高速度工具鋼製工具の素材にショットピーニング処理を行う第１工程、第１工程後に高速度工具鋼製工具の素材をピロリン酸塩とメタリン酸カリウムの混合水溶液および過酸化水素水溶液に浸漬する第２工程、第２工程後に高速度工具鋼製工具の素材へ硬質皮膜を被覆する第３工程から形成する。【選択図】図４