PRESS FORGING TOOL FOR FORMING RECESSED PART

PROBLEM TO BE SOLVED: To remarkably extend the service life by setting the roughness of a surface of a stock piercing part to be the specified value, and forming a ceramic hard film on its surface. SOLUTION: The average roughness of the surface of a stock piercing part of a heading tool for forming...

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Bibliographische Detailangaben
Hauptverfasser:	KANARI SHOHEI, HASHIMOTO OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	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 FORGE FURNACES FORGING HAMMERING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To remarkably extend the service life by setting the roughness of a surface of a stock piercing part to be the specified value, and forming a ceramic hard film on its surface. SOLUTION: The average roughness of the surface of a stock piercing part of a heading tool for forming a recessed part is