Arc ending control method of double-electrode arc welding
A control method and arc welding technology, which is applied to arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems that cannot be fully eliminated, do not take into account the use of non-melting electrode arcs, etc., and achieve the effect of improving welding strength
Active Publication Date: 2014-06-11
DAIHEN CORP
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Problems solved by technology
However, none of these finishing processes take into consideration the use of non-melting electrode arcs.
Therefore, merely applying these to two-electrode arc welding cannot sufficiently eliminate the unsuitable conditions described
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[0047] image 3 Another embodiment of the present invention is shown. In addition, in these drawings, the same code|symbol as the said embodiment is attached|subjected to the element which is the same as or similar to the said embodiment.
[0048] image 3 A second embodiment of the arc termination control method for two-electrode arc welding according to the present invention is shown. exist image 3 In , the same symbols as those in the above-mentioned embodiment are given to the same or similar elements as those in the above-mentioned embodiment. In the present embodiment, the value of the plasma arc welding current Iwp in the second welding end process is set to be smaller than the steady plasma arc welding current Iwpn and larger than the end plasma arc welding current Iwpe. Therefore, the value of the plasma arc welding voltage Vwp in the second welding end process is set to be smaller than the steady plasma arc welding voltage Vwpn and larger than the end plasma arc...
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The present invention provides an arc ending control method of a double-electrode arc welding, which is capable of forming better weld bead, wherein, according to the arc ending control method of double-electrode arc welding, the welding is performed through generating consumable electrode arc (6a) and nonconsumable electrode (6b) by a welding torch which is provided with a consumable electrode (W) and a nonconsumable electrode that are configured in a protective gas nozzle for spraying the protective gas. After performing stable welding through moving the welding torch (B) in a welding sequence direction while the consumable electrode arc (6a) and nonconsumable electrode (6b) are generated, the following treatments are performed: a first welding ending treatment of reducing a consumable electrode feeding speed (Fw) for feeding the consumable electrode (W) so that the consumable electrode feeding speed is smaller than the amount in stable welding treatment; and a second welding ending treatment which is performed for stopping the feeding of the consumable electrode (W) and ending the consumable electrode arc (6a).
Description
technical field [0001] The present invention relates to a method for forming a good weld bead in two-electrode arc welding in which a welding torch having a melting electrode and a non-melting electrode arranged in a shielding gas nozzle generates a melting electrode arc and a non-melting electrode arc Arc end control method for two-electrode arc welding. Background technique [0002] There has been proposed a two-electrode arc welding in which a melting electrode arc is generated while a welding wire as a melting electrode is supplied, and a non-melting electrode arc is generated surrounding the melting electrode by using a plasma gas such as Ar. Arc (for example, refer to Patent Document 1). This method of supplying heat to the welding base material and supplying molten wire from both the melting electrode arc and the non-melting electrode arc is suitable for high-efficiency welding at a relatively fast welding speed. [0003] However, in high-efficiency welding, the fas...
Claims
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IPC IPC(8): B23K9/16
Inventor 刘忠杰
Owner DAIHEN CORP