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Method and device for stably forming all-position welding pool

An all-position welding and molten pool technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of low efficiency, small average current, easy flow of molten pool, etc., and achieve large welding current, high efficiency, and complete welding Effective positional effect

Inactive Publication Date: 2011-08-17
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0005] Aiming at the problems that the molten pool is easy to flow, the average current is small and the efficiency is low during the current all-position MI6 / MAG welding, the technical problem to be solved by the present invention is to provide a method and device for the stable formation of the all-position welding molten pool

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  • Method and device for stably forming all-position welding pool
  • Method and device for stably forming all-position welding pool
  • Method and device for stably forming all-position welding pool

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Embodiment Construction

[0015] Further describe the present invention below in conjunction with embodiment:

[0016] The method (abbreviation method, see Figure 1-6 ), the method consists of the left coil 33-middle coil 31 and the middle coil 31-right coil 32 to form a left-right symmetrical external high-frequency alternating magnetic field, which is installed on the welding torch 2, so that the molten iron in the welding pool can generate eddy currents, And make the eddy current interact with the external high-frequency alternating magnetic field to generate electromagnetic force, use the generated electromagnetic force to offset part or all of the gravity that affects the stable formation of the weld pool, and maintain the stable formation of the weld pool in all positions The number of turns of each coil is 20 to 200 turns respectively, and the center distance between the left coil and the middle coil and between the middle coil and the right coil is symmetrically called 50mm to 150mm, and the e...

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Abstract

The invention discloses a method and a device for stably forming an all-position welding pool. In the method, a eudipleural external high-frequency alternating magnetic field is designed; the magnetic field is added on a welding gun so that liquid iron in the welding pool can generate an eddy current, and the eddy current and the external high-frequency alternating magnetic field interact with each other to generate an electromagnetic force; the generated electromagnetic force is used for counteracting partial or all gravity which influences the stable forming of the welding pool, so that thestable forming of the all-position welding pool can be kept. The device is applicable to the method and mainly comprises a middle winding and a middle iron core, a right winding and a right iron core, a left winding and a left iron core, and a beam for fixing the windings and the iron cores; the middle iron core has a hollow structure and is arranged at the middle of the beam; the welding gun canpass through the hollow of the middle iron core; the left iron core and the right iron core have solid structures and arranged on the beam symmetrically; and the device can be detachably and adjustably fixed on the welding gun by using the beam.

Description

technical field [0001] The invention relates to welding technology, in particular to a method and device for stably forming an all-position welding molten pool. The method and device are based on the action of external electromagnetic force. Background technique [0002] With the rapid development of industries such as petrochemical industry, pipeline installation and shipbuilding, there are more and more occasions where all-position welding technology is used. On the premise of ensuring the welding quality, realizing low-cost and high-efficiency welding in all positions undoubtedly has broad application prospects. However, the current all-position welding process generally has the problems of low welding efficiency and high cost. The reason is that the key lies in the influence of gravity, the molten pool is prone to instability, causing the molten iron to flow, which affects the stability of the welding process on the one hand, and is also prone to welding defects such a...

Claims

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Application Information

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IPC IPC(8): B23K31/02
Inventor 李亮玉岳建锋姜旭东
Owner TIANJIN POLYTECHNIC UNIV
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