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A High Frequency-Arc Hybrid Welding Method

A hybrid welding and arc welding technology, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as difficult general application, and achieve the effects of solving heat shortage, increasing welding capacity, and heating directly and quickly

Active Publication Date: 2021-11-16
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such high welding efficiency is unmatched by other welding methods
However, traditional high-frequency welding requires an external upsetting force to act on the base metal on both sides of the weld, so that the surface to be welded is squeezed at high temperature to form a bond, so it has great limitations in terms of welding structure and welding quality, and it is difficult to widely used
There is no report on the combination of high frequency contact welding and arc welding

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0041] 3.5mm thick carbon steel Q235-b butt welding. The parameters of high-frequency-melting electrode gas-shielded arc hybrid welding are: weld gap 5 controlled at 0.8mm, welding speed 25mm / s (1500mm / min), high-frequency power supply output current frequency 600kHz, anode voltage 5kV, anode current 2A, arc The welding voltage of the welding machine is 20V, the current is 170A, the wire feeding speed is 16m / min, the shielding gas is argon, the flow rate is 15L / min, and the welding wire is ER50-6 low carbon steel welding wire with a diameter of 1.0mm. The parameters of high frequency-non-melting electrode gas shielded arc hybrid welding are: weld gap 5 controlled at 0.8mm, welding speed 10mm / s (600mm / min), high frequency power supply output current frequency 600kHz, anode voltage 5kV, anode current 2A, The welding voltage of the arc welding machine is 10V, the current is 120A, the wire feeding speed is 8m / min, the shielding gas is argon, the flow rate is 15L / min, and the weldi...

Embodiment 2

[0043] 3.0mm thick carbon steel Q235-b and 3.0mm 1060 pure aluminum butt fusion brazing, high frequency-melting electrode gas shielded arc composite detailed parameters are as follows: weld gap 5 is controlled at 0.8mm, welding speed 20mm / s (1200mm / min ), high-frequency power supply output current frequency 600kHz, anode voltage 2kV, anode current 0.5A, arc welding machine welding voltage 13V, current 110A, wire feeding speed 11m / min, shielding gas is argon, flow rate 15L / min, welding wire diameter 0.8mm ER4043 Al-Si alloy welding wire. The detailed parameters of the high-frequency-non-melting electrode gas-shielded arc composite are as follows: the weld gap 5 is controlled at 0.8mm, the welding speed is 10mm / s (600mm / min), the output current frequency of the high-frequency power supply is 600kHz, the anode voltage is 2kV, and the anode current is 0.5A , The arc welding machine has a welding voltage of 10V, a current of 100A, a wire feeding speed of 6m / min, a shielding gas of ...

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Abstract

The invention discloses a high-frequency-arc hybrid welding method. The method combines two welding methods, arc welding and high-frequency welding. A high-frequency current is fed to a workpiece at the same time as the arc welding, and the strong skin effect of the high-frequency current is utilized. And the proximity effect, the high-frequency resistance heat is generated inside the weld pool and the weld sidewall at the front of the weld pool, and part of the welding energy is directly fed to the base metal to be welded, which can break through the traditional arc welding, which is determined by the heat conduction mechanism. The limitation of slow welding speed greatly increases the welding penetration and welding efficiency. At the same time, the high-frequency alternating magnetic field generated by the high-frequency current has a certain stirring and stirring effect on the molten pool metal, which is beneficial to improve the weld structure and weld formation. In addition, the method can also be used for dissimilar metal fusion brazing and brazing: in the welding process using the flux, the method can effectively improve the film removal effect of the flux, and greatly promote the solder metal on the surface of the base metal, especially Wetting and spreading of the backside of the base metal to improve weld formation.

Description

technical field [0001] The invention belongs to the technical field of technical material processing and welding, and in particular relates to a high-frequency-arc compound welding method. Background technique [0002] As the most widely used welding method, arc welding has the advantages of simple equipment, low cost, and convenient operation, which is difficult for other welding methods, and it has created its irreplaceable position in welding production. With the development of modern industry and the continuous application of new materials and thick structures, industrial production has higher and higher requirements for welding efficiency and quality. Traditional arc welding is a typical heat conduction welding method. The heating of the workpiece depends on heat conduction. The heat conduction rate in the workpiece varies with the nature of the material itself and takes a certain amount of time. Therefore, the penetration depth is limited by the heat conduction efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/02
Inventor 黄继华叶政程志谢立
Owner UNIV OF SCI & TECH BEIJING
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