SHEET BAR MATERIAL FOR ELECTRICAL AND ELECTRONIC PARTS AND ITS PRODUCTION

PURPOSE:To provide a sheet bar material for electrical and electronic parts which has excellent flatness, hardly generates deformation of leads in a stage for working the material to lead frames and a heat treatment stage after working to the lead frames and is adequate as a lead frame material. CON...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUI TAKASHI, KANAO KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INSULATORS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SEMICONDUCTOR DEVICES TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a sheet bar material for electrical and electronic parts which has excellent flatness, hardly generates deformation of leads in a stage for working the material to lead frames and a heat treatment stage after working to the lead frames and is adequate as a lead frame material. CONSTITUTION:A rolled stock 10 is passed twice through a tension leveler. In such a case, the tension (average tension to be applied on this rolled stock 10 is specified to about 15kgf/m so as to maintain specified elongation and the steepness of the rolled stock 10 is confined to