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Device applying pulsed TIG electric arc for assisting MIG welding and welding method achieved by adopting device

An arc and pulse technology, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve problems such as poor stability, and achieve the effects of improving stability, simple structure, and reducing welding spatter

Inactive Publication Date: 2016-05-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention solves the problem of poor stability of small current short circuit transition and large drop transition in MIG welding in the prior art

Method used

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  • Device applying pulsed TIG electric arc for assisting MIG welding and welding method achieved by adopting device
  • Device applying pulsed TIG electric arc for assisting MIG welding and welding method achieved by adopting device
  • Device applying pulsed TIG electric arc for assisting MIG welding and welding method achieved by adopting device

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specific Embodiment approach 1

[0040] Specific embodiment one: see figure 1 with figure 2 To explain this embodiment, a device that uses pulsed TIG arc assisted MIG welding described in this embodiment includes a MIG welding power source 1, a TIG welding power source 2, a MIG welding gun 3, a TIG welding gun 4, an IGBT switch control system 5 and an IGBT Switch 6;

[0041] The MIG welding torch 3’s fuser electrode clamp is used to clamp the fuser welding wire, and the TIG welding torch 4’s tungsten electrode clamp is used to clamp the tungsten electrode.

[0042] The positive output terminal of the MIG welding power source 1 is connected to the fusion electrode clamp of the MIG welding torch 3, and the negative output terminal of the MIG welding power source 1 is connected to one end of the workpiece to be welded.

[0043] The negative output terminal of the TIG welding power source 2 is connected to the other end of the workpiece to be welded, the positive output terminal of the TIG welding power source 2 is con...

specific Embodiment approach 2

[0045] Embodiment 2: The difference between this embodiment and the device for assisting MIG welding using pulsed TIG arc as described in the first embodiment is that the MIG welding power source 1 is a constant voltage MIG welding power source, and the TIG welding power source 2 is Constant current TIG welding power source.

specific Embodiment approach 3

[0046] Embodiment 3: The difference between this embodiment and the device for applying pulsed TIG arc-assisted MIG welding described in the first embodiment is that it also includes two four-degree-of-freedom clamping mechanisms, and the two four The degree of freedom clamping mechanism is used to clamp the MIG welding torch 3 and the TIG welding torch 4, and each four-degree-of-freedom clamping mechanism is used to realize translational movement along the x-axis, y-axis and z-axis and rotation around the y-axis .

[0047] In this embodiment, two four-degree-of-freedom clamping mechanisms are included, and the two four-degree-of-freedom clamping mechanisms are used to clamp the MIG welding torch 3 and the TIG welding torch 4, each of which is used for It realizes translational movement along the x-axis, y-axis and z-axis and rotation around the y-axis, which improves the automation level of welding, and improves welding efficiency and welding accuracy.

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Abstract

The invention discloses a device applying pulsed TIG electric arc for assisting MIG welding and a welding method achieved by adopting the device and belongs to the technical field of welding. The problem that low-current short circuiting transfer and globular transfer of MIG welding are poor in stability in the prior art is solved. The positive electrode output end of an MIG welding power source is connected with a consumable electrode holder of an MIG welding gun. The negative electrode output end of the MIG welding power source is connected with one end of a to-be-welded workpiece. The negative electrode output end of a TIG welding power source is connected with the other end of the to-be-welded workpiece. The positive electrode output end of the TIG welding power source is connected with the positive electrode input end of an IGBT switch. The negative electrode input end of the IGBT switch is simultaneously connected with a tungsten electrode holder of a TIG welding gun and the electrical signal input end of an IGBT switch control system. The control signal output end of the IGBT switch control system is connected with the control end of the IGBT switch. The device is mainly used for welding the to-be-welded workpiece.

Description

Technical field [0001] The invention belongs to the field of welding technology. Background technique [0002] GMAW is one of the most widely used welding methods in industrial production. GMAW welding is efficient and easy to automate. However, compared to GTAW (Tungsten Argon Arc Welding), due to the disturbance of the welding arc and molten pool by the GMAW droplet transfer phenomenon, the arc stability and welding quality are not as good as GTAW. At the same time, the traditional GMAW process cannot obtain a stable droplet transfer under too low welding current, and its available welding current range is therefore limited. These problems limit the application of GMAW in the precision welding of modern manufacturing, especially the welding of thin plate precision components. Therefore, the key to improving the quality of GMAW welding is to control its droplet transfer. [0003] To control the droplet transfer as a direct means to reduce welding spatter, reduce heat input, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167B23K9/173B23K9/067
CPCB23K9/067B23K9/167B23K9/173
Inventor 高洪明王世博李然李永哲
Owner HARBIN INST OF TECH
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