An ultrasonic vibration gtaw composite device based on acoustic-thermal synchronization and its application method

Abstract

The invention proposes an ultrasonic vibration GTAW composite device based on sound-thermal synchronization and its use method, belonging to the technical field of welding metallurgy. In the original ultrasonic vibration GTAW composite technology, the ultrasonic effect on the welding pool is uneven, the ultrasonic output power is low, the ultrasonic effect is not good in a large molten pool, the equipment operation is complicated, and the adjustment accuracy is low. It includes welding platform, GTAW welding torch, welding torch three-dimensional mobile platform, ultrasonic output device, ultrasonic output device three-dimensional mobile platform and pressure device, welding torch three-dimensional mobile platform is fixedly connected with welding platform, GTAW welding torch is fixedly connected with welding torch three-dimensional mobile platform, The three-dimensional mobile platform of the ultrasonic output device is fixedly connected to the welding platform, the ultrasonic output device is connected to the pressure device, the pressure device is fixedly connected to the three-dimensional mobile platform of the ultrasonic output device, the GTAW welding torch is connected to the welding power supply through a wire, and the ultrasonic output device is connected to the ultrasonic generator through a wire. Power is connected. It is mainly used in ultrasonic GTAW composite technology.

Description

technical field [0001] The invention belongs to the technical field of welding metallurgy, and in particular relates to an acoustic-thermal synchronous ultrasonic vibration GTAW composite device and a use method thereof. Background technique [0002] Gas Tungsten Arc Welding (GTAW) is a kind of welding that uses tungsten materials or tungsten alloy materials as electrodes and is performed under the protection of inert gas. GTAW is a very common welding method, and its advantages are: it can accurately control the welding heat input, low equipment cost, and simple operation. But there are also some shortcomings, such as the poor metallurgical properties of the weld, mainly reflected in the coarse structure of the weld and the defects such as welding pores and cracks. These deficiencies have seriously affected the quality of GTAW joints. Therefore, how to improve the quality of GTAW joints has attracted much attention. In order to obtain better quality GTAW joints, many new...

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Problems solved by technology

However, the traditional method is to fix the ultrasonic tool head at a certain position of the base metal. The biggest disadvantage of this method is that with the increase of the welding distance, the ultrasonic effect on the molten pool at different positions will change significantly, and this At present, most of these methods use simple pressure fixation, which cannot guarantee that the fixed pressure of each welding is constant, so the external pressure of each welding will inevitably be different, thus affecting the input of ultrasound, and it is impossible to guarantee whether the ultrasound input is constant each time.

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