PIERCING METHOD

PURPOSE:To pierce accurately plural holes each having a set diameter in a base material by piercing holes each having a smaller diameter than the set diameter in the base material by chemical milling, inputting data on the set diameter into a machine tool having a numerical control function, and enl...

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Bibliographische Detailangaben
1. Verfasser:	TOGO TETSUO
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 MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE OTHER WORKING OF METAL PERFORMING OPERATIONS TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	PURPOSE:To pierce accurately plural holes each having a set diameter in a base material by piercing holes each having a smaller diameter than the set diameter in the base material by chemical milling, inputting data on the set diameter into a machine tool having a numerical control function, and enlarging the holes to the set diameter with the machine tool. CONSTITUTION:Many small holes each having a smaller diameter than a set diameter are pierced in a base material such as stainless steel by chemical milling with an etching soln. such as a mixed soln. contg. ferric chloride and nitric acid. Data on the set diameter are inputted into a machine tool having a numerical control function, and the holes are enlarged to the set diameter with the machine tool.