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Pulse welding method and system

A pulse welding and pulse technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of arc breaking, limited energy storage of reactors, long pulse period, etc., and achieve the effect of preventing arc breaking.

Pending Publication Date: 2021-12-21
PANASONIC WELDING SYST TANGSHAN
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Problems solved by technology

In general, the base current is relatively low, usually below 20A. Once the molten pool is unstable or the droplet swings, the distance between the tip of the welding wire and the molten pool will change. If the distance becomes longer, because the energy storage of the reactor is limited, and the welding The lifting speed of the output energy of the machine is also limited, and it is easy to break the arc
However, increasing the base current as a whole can prevent arc breaking, but because of the increase in energy, the pulse period will be longer and the welding performance will be worse.

Method used

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Embodiment Construction

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may mean "and" or "or".

[0048] The present invention provides a pulse welding method and system with arc breaking prevention measures. The pulse welding method described in this embodiment is used in a welding machine. The welding current in the welding process of the welding machine has a pulse waveform, and the waveform includes a pulse base value stage and a pulse peak stage. The method i...

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Abstract

The invention provides a pulse welding method and system. The pulse welding method is used for a welding machine, welding current in the welding process of the welding machine has a pulse waveform, the waveform comprises a pulse base value stage and a pulse peak value stage, and the pulse welding method comprises the steps that whether the pulse base value stage of a current pulse period has an arc breaking trend or not is judged; when it is judged that the arc breaking trend exists, the preset base value current of the pulse base value stage of the current pulse period is increased; whether the arc breaking trend of the current pulse period is relieved or not is judged; and when it is judged that the arc breaking trend risk is relieved, the preset peak current of the pulse peak value stage of the next pulse period is reduced. Arc breaking during pulse welding can be prevented, the arc length is kept stable, and the welding effect is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a pulse welding method and system. Background technique [0002] In the prior art, when welding with small current pulses, the pulse period is generally relatively long, and the main time is distributed in the base value period. In general, the base current is relatively low, usually below 20A. Once the molten pool is unstable or the droplet swings, the distance between the tip of the welding wire and the molten pool will change. If the distance becomes longer, because the energy storage of the reactor is limited, and the welding The increase speed of the output energy of the machine is also limited, and it is easy to break the arc. However, increasing the base current as a whole can prevent arc breakage, but because of the increase in energy, the pulse period will be longer and the welding performance will be worse. Contents of the invention [0003] Aiming at the problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/09B23K9/32
CPCB23K9/092B23K9/32
Inventor 王伟孙永涛
Owner PANASONIC WELDING SYST TANGSHAN
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