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Electric arc welding method and device using additional acoustic pressure mode

An arc welding and acoustic technology, applied in the direction of arc welding equipment, welding equipment, welding accessories, etc., can solve the problems of large amount of spatter, difficult control of droplet transfer, difficulty in ensuring welding quality, etc., achieve a broad application market, and effectively control welding Heat input, beneficial effect on welding production

Inactive Publication Date: 2008-09-24
HARBIN INST OF TECH
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Problems solved by technology

GMA welding has higher production efficiency and lower welding cost, but the droplet transfer during GMA welding is not easy to control, and the amount of spatter is large, so it is difficult to ensure high-quality welding quality during welding

Method used

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  • Electric arc welding method and device using additional acoustic pressure mode

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Embodiment 1

[0018] Embodiment 1, combining figure 1 , the electrical signal of the acoustic source is converted into mechanical vibration through the transducer, the mechanical vibration amplitude of the transducer is small, and it is amplified to 10μm-150μm by the horn of the next stage, and then the vibration is transmitted to the fixed place The protective gas nozzle on the horn and on the electrode, such as figure 1 shown. The above-mentioned device can work under the acoustic vibration with a frequency of 100 Hz to 2 MHz, and generate the corresponding frequency of acoustic vibration on the electrodes. The input power of the acoustic system can be adjusted arbitrarily between 1W and 3000W, and then the welding is performed according to the method of ordinary gas shielded welding. After the acoustic vibration is applied, the sound pressure generated by the shielding gas nozzle and the electrode will have a certain compression effect on the welding arc, so when the arc processes the ...

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Abstract

The invention relates to an arc welding method adopting an external sound pressure mode and a device, and the arc welding method aims to provide a gas shielded welding device of a complex method which can realize stable process, high welding formation quality and greatly improved welding efficiency. The device consists of an acoustic energy transducer (2), an acoustic amplitude-change rod (3), a protective gas injecting nozzle (4), a welding electrode clamp (5), an acoustic generation source (9) and a welding source (8). Under the non-melt electrode mode, the arc welding method has the advantages of stable welding process, improved weld penetration of a single-pass weld and high welding formation quality, as well as realization of high effective welding under the common non-melt electrode welding environment. When being used under the melt electrode mode, the arc welding method has the advantages of greatly improved welding efficiency, effective control of welding heat input quantity, changed weld penetration due to the changed acoustic frequency, the protective gas injecting nozzle, the welding height and other parameters, and effective control of solidification and crystalline state of the molten metal.

Description

technical field [0001] The invention relates to a welding device, in particular to an arc welding method and device using an external sound pressure method. The invention belongs to the technical field of gas shielded arc welding and arc smelting. technical background [0002] Gas shielded arc welding is a kind of welding, which is usually divided into gas metal shielded welding (GTAW) and gas metal shielded welding (GMAW). Ordinary non-melting inert gas shielded welding (TIG) is characterized by the ability to obtain high-quality welded joints, and is widely used in the welding production of titanium alloys, aluminum alloys, stainless steel and high-temperature alloys, etc., but the arc energy is not concentrated during welding, resulting in single pass The weldable thickness is small, the welding efficiency is low, and the grains grow after welding. For weldments with larger thickness, it is necessary to open the groove before welding or perform multi-layer multi-pass we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/32
Inventor 杨春利孙清洁吕世雄范成磊赵国庆兰玲
Owner HARBIN INST OF TECH
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