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Magnetic control melting electrode welding method, and its developed application, and its universal equipment

A welding method and welding equipment technology, applied in the field of magnetron melting electrode welding method and its extended application and general equipment, can solve the problems such as the stability of continuous high-current droplet transfer, and achieve enrichment of basic theory and technical practice capabilities , The equipment is simple, and the effect of overcoming the limitation of use

Inactive Publication Date: 2008-08-20
WUHAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Other researchers hope to obtain a stable rotating jet transition form by changing the mixed gas ratio and adopting a helium-free mixed gas. Practice has proved that this single measure cannot solve the stability of the droplet transfer in the continuous high current range.

Method used

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  • Magnetic control melting electrode welding method, and its developed application, and its universal equipment
  • Magnetic control melting electrode welding method, and its developed application, and its universal equipment
  • Magnetic control melting electrode welding method, and its developed application, and its universal equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] Example 1: When LD10CS aluminum alloy (US brand 2014-T6) is controlled by intermittent alternating longitudinal magnetic field for TIG welding, the welding process parameters are as follows to obtain good weld formation: the applied magnetic field strength is 0.01-0.05T, and the magnetic field frequency is 1-4Hz , The welding current is 100-140A, the welding speed is 300-400mm / min, and the arc length is 1-1.5mm.

example 2

[0085] Example 2: When 1Cr16Ni9Ti (American brand AISI 340) is controlled by intermittent alternating longitudinal magnetic field for TIG welding, the welding process parameters are as follows to obtain a good weld shape: the applied magnetic field strength is 0.01T, the magnetic field frequency is 1.5Hz, and the welding current is 140A. The welding speed is 150mm / min, and the arc length is 1mm.

[0086] Example 3: When Q235 steel (old national standard A3 steel) is welded with intermittent alternating longitudinal magnetic field to control high cladding rate MAG welding, a good weld shape can be obtained under the following welding process parameters: the shielding gas is Ar+20% CO 2 The gas flow rate is 20~30L / min, the excitation current is 10~30A, the excitation frequency is 1~10Hz, the welding current is 500~800A, the arc voltage is 30~50V, the welding wire diameter is 0.8~1.6mm, and the wire feeding speed is 20 ~35m / min.

[0087] Example 4. When 20G boiler steel (US bran...

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Abstract

A magnetically controlled welding method with consumable electrode features that a pair of exciting coils for upper and lower electrodes are arranged respectively above and under the workpiece to be welded, and an exciting power supply is used to provide the exciting current to said coils and generate an external vertical magnetic field for controlling and perform the welding to the workpiece protected by active gas or CO2. Its welding apparatus has exciting power supply, exciting unit and water cooling system.

Description

technical field [0001] The invention relates to the field of welding, in particular to a magnetron melting electrode welding method, its extended application and general equipment. Background technique [0002] As mentioned before (including textbooks), the fusion welding in the form of rotating jet droplet transfer is considered unapplicable to the actual welding production process because of the large spatter and poor weld shape in the welding process. At present, the similar technology widely used at home and abroad is a mixed gas melting electrode welding technology (such as TIME, RAPID MELT, LINFAST, etc.) with high helium as the main component. At the same time, the protective gas formula also has international intellectual property rights, making The use of process and equipment is relatively expensive. At present, two patent applications in this area have been published in China: one is the magnetron high cladding rate molten electrode mixed gas shielded welding (MA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/08B23K9/173
Inventor 罗键王颖
Owner WUHAN UNIV OF TECH
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