Arc closing method, device and electric welding machine for twin-wire melting electrode arc welding
A technology of arc welding and melting electrode, which is applied in arc welding equipment, welding equipment, welding accessories, etc., and can solve problems such as wire burst, the elongation of the welding wire that cannot guarantee arc closing, and arc start failure.
Active Publication Date: 2020-04-28
SHENZHEN RILAND IND
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Problems solved by technology
In the normal welding process, there is no problem with the arcs of the two welding wires working alternately, but in the arc crater process, the two welding wires alternately supply power, which cannot guarantee the removal of the ball at the end of the arc crater wire, nor can it Ensure that the rod elongation of the welding wire that ends the arc is the same, so that the phenomenon of wire explosion or arc failure is prone to occur when the arc is started next time
Method used
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Embodiment Construction
[0024] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] The invention provides an arc closing method for twin-wire melting electrode arc welding, referring to figure 1 , in one embodiment, the arc closing method of twin-wire MIMA welding includes:
[0026] Step S10, when the arc extinguishing instruction is received, control the first wire feeder to stop wire feeding within a first preset time period, and control the welding current of the first wire feeder within the first preset time period drop to zero;
[0027] The arc closing method for twin-wire melting-electrode arc welding provided by the embodiment of the present invention is mainly applied to the arc-ending control when the electric welder performs twin-wire melting-electrode arc welding, so as to prevent the welding machine from appearing when the next double-wire melting-electrode arc welding starts. T...
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Abstract
The invention discloses an arc receiving method and arc receiving device for double wire consumable electrode arc welding and a welding machine. The arc receiving method for the double wire consumableelectrode arc welding comprises the steps that when an arc receiving instruction is received, a first wire feeder is controlled to stop feeding wires in a first preset time period, and welding current of the first wire feeder is controlled to be reduced to zero in the first preset time period; and when the welding current of the first wire feeder is zero, arc receiving work of a second wire feeder is controlled according to a preset arc receiving control rule when the welding current of the first wire feeder is zero. The arc receiving method for the double wire consumable electrode arc welding can effectively prevent wire explosion or an arc starting failure when the welding machine carries out arc starting in the next double wire consumable electrode arc welding.
Description
technical field [0001] The invention relates to the field of electric welding machines, in particular to an arc closing method and device for double-wire melting electrode arc welding, and an electric welding machine. Background technique [0002] In all melting electrode arc welding control systems, the arc crater process is a very important link, because during the arc crater process, the welding current should be reduced from the normal welding current to zero, and at the same time, the feeding of welding wire should also be stopped. At present, there is a relatively mature arc control method for the conventional single-wire melting electrode arc. However, since the arc ignition of the double-wire melting electrode arc involves two welding wires, in the prior art, two welding wires are usually used to alternately supply power. The way to reduce the arc magnetic blow caused by the electromagnetic force between the two arcs. In the normal welding process, there is no probl...
Claims
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IPC IPC(8): B23K9/10B23K9/133B23K9/32
CPCB23K9/10B23K9/133B23K9/32
Inventor 邱光汪清华王巍蒋明耿正
Owner SHENZHEN RILAND IND