The Paton Welding Journal, 2001, №07

2001 №07 (07)

2001 №07 (09)

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The Paton Welding Journal, 2001, #7, 33-36 pages

Effect of parameters of asymmetric and modulated currents on quality of aluminium alloy welded joints

A.G. Poklyatsky, A.A. Grinyuk

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The effect of parameters of the asymmetric and modulated currents on the length of oxide film inclusions in the welds and porosity of the joints in alloys AMg6, 1420 and 1460 produced by a pulsed-arc TIG welding is considered. The use of the asymmetric current allows a decrease of 3 times in the relative length of the oxide film inclusions in the AMg6 alloy welds and reduces the probability of formation of whisker inclusions in the welds. Efficient degassing of the molten pool metal is achieved in the case of using the modulated current with a modulation frequency of 5 Hz.
Keywords: pulsed arc, asymmetric current, modulated current, non-consumable electrode, aluminium alloys, inclusions of oxide film, pores

References

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Suggested Citation

A.G. Poklyatsky, A.A. Grinyuk (2001) Effect of parameters of asymmetric and modulated currents on quality of aluminium alloy welded joints. The Paton Welding J., 07, 33-36.

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