Method for lap welding of skelps and device for effecting same

Details Method for lap welding of skelps and device for effecting same Method for lap welding of skelps and device for effecting same

1975-11-10

1979-04-17

Truhe, J. V.

Electric heating

Metal heating

Of cylinders

219 591, B23K 1900

Patent

active

041502744

ABSTRACT:
A method is proposed for lap welding of tubes, comprising the steps of preheating the tubes by passing an electric current radially therebetween simultaneously along the entire circumference of the welded joint and subsequent compression of the welded surfaces of the tubes under the pressure of a pulsed magnetic field, the electric current being passed either as a pulse current or a train of such pulses and the tubes being arranged either with or without a gap therebetween.
Also proposed are devices for effecting this method.
The efficiency of the proposed method of welding and of the devices for effecting said method is 5-10 times more than that obtainable by the prior-art magnetic pulse welding procedures, both the method and devices being simple and economically efficient. Moreover, skelps of either similar or dissimilar metals can be welded by the proposed method.

REFERENCES:
patent: 3258573 (1966-06-01), Morin et al.
patent: 3603759 (1970-01-01), Peacock
patent: 3794805 (1974-02-01), Rudd

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