COPPER ALLOY RESISTANCE WIRE FOR ELECTROFUSION JOINT

PROBLEM TO BE SOLVED: To obtain a copper alloy resistance wire for electrofusion joint, free from spreading and short-circuit during electrification, by constituting the wire of a copper alloy wire of specific composition consisting of Zn, Ni, Fe or Co, Mn, and Cu. SOLUTION: The copper alloy resista...

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Bibliographische Detailangaben
Hauptverfasser:	MAE YOSHIHARU, YAJIMA KENJI, HAGIWARA HIDETOME
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ALLOYS BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a copper alloy resistance wire for electrofusion joint, free from spreading and short-circuit during electrification, by constituting the wire of a copper alloy wire of specific composition consisting of Zn, Ni, Fe or Co, Mn, and Cu. SOLUTION: The copper alloy resistance wire for electrofusion joint is constituted of a copper alloy wire having a composition consisting of, by weight, 15-40% Zn, 10-17% Ni, 0.51-5.0% Fe or 0.5-5.0% Co, 0.01-0.7% Mn, and the balance Cu with inevitable impurities. In this copper alloy resistance wire, volume resistivity is in the range as wide as (20 to 30)μΩ/cm on a 23 deg.C base, and primary temp. coefficient is as high as (40×10 to 100×10 )/K. By this method, in the case where this wire is used for electrofusion joint, the occurrence of spreading and short-circuit can be prevented even in the case of power supply from a constant voltage power unit and the occurrence of incomplete welding can be perfectly prevented.