End position judging method of non-consumable gas shielded arc welding wire

Abstract

The invention discloses an end position judging method of a non-consumable gas shielded arc welding wire. An electric arc is built through a welding control system; voltage between a non-consumable welding gun and a workpiece is acquired by dint of a voltage sensor, and is converted to a corresponding space electric field; an electric field distribution cloud atlas of the electric arc is built; voltage between the non-consumable welding gun and a welding wire and voltage between the welding wire and the workpiece are acquired, and are converted to corresponding space electric fields; the two electric fields are combined with the electric field intensity distribution atlas of the electric arc space; the electric field wire directions at the end parts of the welding wire are respectively obtained through the non-consumable welding gun and the workpiece end; and the intersection of the two is determined as present position of the end parts of the welding wires to realize judgment of the end positions of the welding wire. The method facilitates improvement of the stability in the welding process, and further improves the welding line quality.

Description

technical field [0001] The invention belongs to the technical field of welding methods, in particular to a method for judging the position of the end of a non-melting electrode gas shielded welding wire. Background technique [0002] With the rapid development of my country's manufacturing industry and the continuous improvement of welding technology, the application of welding products has become more and more extensive, and has penetrated into various fields such as automobiles, machinery manufacturing, military, aerospace and civilian daily life. Although emerging welding processes, such as laser welding, friction stir welding, and electron beam welding, have had a great impact on traditional arc welding processes, traditional arc welding processes are still considered to be a relatively economical connection method to achieve reliable connections between metals, and still attracts the attention of scientists. [0003] Non-MIG arc welding is an important branch of tradit...

AI Technical Summary

Problems solved by technology

Whether it is in argon tungsten arc welding or plasma arc welding, it is necessary to feed the welding wire to fill the molten pool with metal, and the temperature distribution of the arc is uneven, so the position of the end of the welding wire in the arc will be Significant impact on deposition rate, which in turn has an impact on weld quality

Therefore, effective monitoring of the position of the welding wire end in the arc will help to regulate the position of the welding wire end, and then adjusting the deposition rate will help control the quality of the weld, but there is currently no effective method to determine its position

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