The Paton Welding Journal, 2013, №07



2013 №07 (10)

2013 №07 (02)

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The Paton Welding Journal, 2013, #7, 2-6 pages

FLASH BUTT WELDING OF PRODUCTS OF HIGH-STRENGTH ALLOYS BASED ON ALUMINIUM

S.I. KUCHUK-YATSENKO, P.N. CHVERTKO, L.A. SEMYONOV, K.V. GUSHCHIN and S.M. SAMOTRYASOV

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua

Abstract
The generalized data of technologies and equipment for flash butt welding of products of aluminium alloys and also types of products being welded using this method in rocket construction are given. The main directions of investigations for modernization of technologies of welding of high-strength aluminium alloys are considered: technology of welding using pulsed flashing as a method of heat intensification, and also effect of deformation degree at upsetting on the structure and properties of welded joints. The optimal degree of deformation of forming devices was determined allowing increase the elongation of welded product by 1.5 times at simultaneous preserving of high values of strength. In welding of thick-wall heat-hardened aluminium alloys the postweld thermomechanical treatment allows producing joints, equal in strength to base metal. Technology of welding of thick-wall T-profiles of high-strength hard-to-weld alloys was developed. The mechanical characteristics of welded joints of high-strength aluminium alloys are at the level of not less than 90 % of the strength of base metal. 10 Ref., 3 Table, 10 Figures.

Keywords: flash butt welding, flashing, aluminium alloys, welded joint, thermomechanical treatment, mechanical properties, strength, ductility

Received:                10.06.13
Published:                28.07.13

References
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