The Paton Welding Journal, 2014, №04



2014 №04 (05)

DOI of Article 10.15407/tpwj2014.04.06

2014 №04 (07)

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The Paton Welding Journal, 2014, #4, 37-39

PERCUSSION CAPACITOR-DISCHARGE WELDING OF WIRE OF COMPOSITE SUPERCONDUCTING ALLOY

D.M. KALEKO

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
Urgency of application of superconducting wires in medical and experimental equipment requires, considering limited length of wire and its high cost, development of joining methods, preserving service characteristics of a base metal. Structure of composite wire, consisting of several dozens of threads from superconducting alloy in copper matrix, allows application of only solid-phase methods of welding. Percussion capacitor-discharge welding is the most perspective for butt joining of such small diameter wires. It provides the possibility of simultaneous welding of threads and matrix, having extremely different thermal-physical characteristics. It is shown that this method allows producing of the joints of commercial composite wires of 0.85 and 1 mm diameter from NT-50 niobium-titanium alloy in copper matrix without significant reduction of critical current in up to 80 kOe fields. 2 Ref., 2 Tables, 4 Figures.
 
 
Keywords: percussion capacitor-discharge welding, composite wire, superconducting wire, niobium-titanium alloy
 
 
Received:                29.01.14
Published:               28.04.14
 
 
References
1. Chyorny, O.V., Reshetnyak, E.N., Stetsenko, A.N. et al. (2002) Structure and superconducting characteristics of Nb-Ti/Ti superlattice. Voprosy Atom. Nauki i Tekhniki, 1, 84-87.
2. Shibuya, J., Mizutame, M., Nakanishi, K. (1987) Joining process and its feature of superconducting materials. J. JWS, 56(2), 12-16. https://doi.org/10.2207/qjjws1943.56.72

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