The Paton Welding Journal, 2012, №08



2012 №08 (07)

2012 №08 (09)

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The Paton Welding Journal, 2012, #8, 42-44 pages  

TECHNOLOGY OF PROJECTION WELDING OF PARTS OF LARGE THICKNESSES WITH T-SHAPED JOINTS

V.S. KUCHUK-YATSENKO, A.A. NAKONECHNY, V.S. GAVRISH and S.V. CHERNOBAJ

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
T-shaped joint projection welding of large-cross section low-carbon steels was studied. It is shown that the programmable change of compression force at the stage of melting and solidification of welded joint metal allows increasing heat input into welding zone, avoiding defects occurrence in joint formation and obtaining higher mechanical characteristics of welded joint. It was established that control of compression force yields the greatest effect in welding large cross-section products, when welding machines do not have required power factor for welding under rigid conditions.
 
 
Keywords: projection welding, low-carbon steels, T-shaped joint, large sections, cast nugget
 
 
Received:                18.04.12
Published:               28.08.12
 
 
References
 
 
1. Gillevich, V.A. (1976) Technology and equipment of projection welding. Leningrad: Mashinostroenie.
2. Kozlovsky, S.N. (2003) Principles of theory and technology of spot resistance welding. Krasnoyarsk: SibGAU.
3. Zhang, H., Senkara, J. (2006) Resistance welding fundamentals and applications. Boca Raton.
4. Tang, H., Hou, W., Hu, S.J. (2002) Forging force in resistance spot welding. J. Eng. Manufact., 216(1), 957-968.
5. Gillevich, V.A. (1970) About choice of relationships between ordinary values of electrode force and welding current in projection welding machines. Moscow: Mashinostroenie.

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