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Magnetic field phase regulation type plasma MIG welding device and method

A technology of plasma welding and welding equipment, which is applied in the field of ion MIG welding equipment, can solve problems affecting the stability of the welding process, pore defects, etc., and achieve the effects of improving welding spatter and welding stability, improving repulsion, and improving weld structure

Active Publication Date: 2021-10-29
HARBIN INST OF TECH AT WEIHAI
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AI Technical Summary

Problems solved by technology

However, since the MIGMAW power supply usually uses the pulse mode for welding, the electromagnetic force received by the external magnetic field under a constant magnetic field will change with the change of the pulse current, thereby causing the MIGMAW arc and the plasma arc heat source The periodic change of the spacing affects the stability of the welding process and brings porosity defects

Method used

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  • Magnetic field phase regulation type plasma MIG welding device and method
  • Magnetic field phase regulation type plasma MIG welding device and method
  • Magnetic field phase regulation type plasma MIG welding device and method

Examples

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Embodiment 1

[0020] This example provides a magnetic field phase control plasma MIG welding method, as attached figure 1 - attached image 3 As shown, first, the plasma electrode 1 and the workpiece 6 are respectively connected to the negative pole and the positive pole of the plasma power supply to form a conductive path; the MAG welding wire 3 and the workpiece are respectively connected to the positive and negative poles of the melting electrode gas shielded welding power supply to form a conductive path to generate a MAG arc 5; The nozzle 2 is used to thermally and mechanically compress the arc generated by the plasma electrode 1 to form a stable plasma arc 7; the protective gas cover 4 is used to ensure that the molten metal pool is not oxidized by the external atmosphere during the welding process; the flat magnetic field is controlled by the coil 10, 11 Generate and control the plasma arc 7 and the MAG arc 5 through the conduction and coupling arc parts of the magnetizers 8 and 9; ...

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Abstract

The invention relates to a magnetic field phase regulation type plasma MIG welding device and method. The device is characterized in that a magnetic pole regulation mechanism is arranged, the magnetic pole regulation mechanism comprises a first coil and a second coil which are used for generating parallel magnetic fields, the magnetic induction line directions of the parallel magnetic fields generated by the first coil and the second coil are perpendicular to the connecting line direction of a plasma arc and an MAG arc, a pulsed magnetic field excitation power supply is arranged in the magnetic pole regulation mechanism, and the pulsed magnetic field excitation power supply is connected with the first coil and the second coil. According to the device and the method, a transverse magnetic field perpendicular to the connecting line direction of the two arcs is added, and phase regulation of the pulsed MAG and the intermittent magnetic field is achieved, so that the MAG arc is flexibly compounded with the plasma arc under the action of Lorentz force, the repulsive interaction between the two arcs is effectively improved, and welding spattering and welding stability are remarkably improved at the same time; meanwhile, a welding pool can be oscillated and stirred through the MAG arc under the pulsating action of the magnetic fields, and the welding seam structure is improved.

Description

Technical field: [0001] The invention relates to the field of welding technology, in particular to a magnetic field phase control plasma MIG welding device and method capable of effectively improving welding stability and reducing porosity defects. Background technique: [0002] With the rapid development of the global marine economy, high-end equipment manufacturing technology has gradually become a technical bottleneck restricting the development of my country's manufacturing industry. As one of the key processing technologies in equipment manufacturing, welding is of great significance to the development of our national economy and national defense construction. At the same time, the implementation of my country's manufacturing power strategy has prompted relevant companies to put forward higher requirements for the efficiency and quality of high-end equipment welding manufacturing. It is urgent to develop advanced and efficient welding technology, improve construction ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K10/02B23K9/167B23K9/32
CPCB23K28/02B23K10/02B23K9/167B23K9/32
Inventor 张洪涛于江王波
Owner HARBIN INST OF TECH AT WEIHAI
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