Method for controlling a bead

Details Method for controlling a bead Method for controlling a bead

1988-07-05

1989-05-02

Shaw, Clifford C.

Electric heating

Metal heating

By arc

2191245, B23K 912

Patent

active

048271012

ABSTRACT:
A method for controlling a bead, in one-side automatic welding wherein a backing metal strip is adhered to the back side of a pair of work pieces through an inorganic material and arc welding is applied to the work pieces on the surface side thereof, comprises:detecting an electrical signal between the work pieces and the backing metal strip to control a weld current so that the detected electrical signal can be equal to a predetermined reference signal; and detecting the controlled weld electrical current and putting the detected weld electrical current into a formula of V.sub.1 =V.sub.0 .multidot.I.sub.L /I.sub.L0 to calculate a welding speed; and controlling the welding speed in accordance with the calculated welding speed, where V.sub.1 represents the calculated welding speed, V.sub.0 an initial value of the welding speed, I.sub.L the detected weld electrical current and I.sub.L0 a predetermined reference weld current. The electrical signal can be an electrical current signal or a voltage signal.

REFERENCES:
patent: 3264447 (1966-08-01), Agnew
patent: 4005308 (1977-01-01), Chaney et al.

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