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Control method and device for welding electric-arc length

A technology of arc length and control method, which is applied in the direction of electrode support devices, welding equipment, welding accessories, etc., can solve the problems of easy wear of mechanical probes, poor welding effect, and difficult to guarantee the accuracy of arc length control, so as to avoid human intervention in welding Process, low cost, and the effect of improving the level of automatic control

Pending Publication Date: 2021-06-04
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology

[0006] The embodiment of the present invention provides a method and device for controlling the length of the welding arc, which can solve the problems in the related art that the mechanical probe is easy to wear, the control accuracy of the arc length is difficult to guarantee, and the welding effect is poor

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  • Control method and device for welding electric-arc length
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Embodiment Construction

[0045] Unless otherwise defined, all technical terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art.

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] During the gas shielded welding construction process, it is necessary to adjust the arc length according to the welding process requirements to achieve different welding effects and ensure welding quality. Traditional manual welding relies on manual observation of the arc and manual adjustment of the arc length. The accuracy of manual adjustment is difficult to guarantee, and the labor intensity is high. In order to realize automatic control, contact follow-up tracking technology has appeared. The mechanical probe is in contact with the base material,...

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Abstract

The invention discloses a control device and device for welding electric-arc length, and belongs to the technical field of welding. The method comprises the following steps: obtaining welding current during welding by a current sensor; transmitting the welding current to a calculating controller through a data acquisition card; obtaining a first electric-arc length according to the welding current by the calculating controller, and comparing the first electric-arc length with a theoretical electric-arc length to obtain compared results; obtaining electric-arc length adjusting information according to the compared results by the calculating controller, and sending the adjusting information to a step motor driver; and adjusting a distance between a welding gun and a mother material by the step motor driver according to the adjusting information to control the electric-arc length. The control method solves the problems that gas-protective welding arc length automatic control is inaccurate, unstable and the like, so that control on welding process parameters is quicker and more accurate.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method and device for controlling the length of a welding arc. Background technique [0002] During the gas shielded welding construction process, it is necessary to adjust the arc length according to the welding process requirements to achieve different welding effects and ensure welding quality. [0003] In the related art, the mechanical probe in the welding torch contacts the base material, and the arc length is indirectly judged according to the position change of the mechanical probe, so as to realize the adjustment of the arc length. [0004] The inventors have found that the related art has at least the following problems: [0005] The mechanical probe is easy to wear, the arc length control accuracy is difficult to guarantee, and the welding effect is poor. Contents of the invention [0006] The embodiments of the present invention provide a method and device for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095B23K9/133B23K9/28B23K9/32
CPCB23K9/095B23K9/133B23K9/28B23K9/32
Inventor 王新升张毅张倩张锋尹铁马志锋邓俊周伦鲍峰刘晓文
Owner BC P INC CHINA NAT PETROLEUM CORP
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