Non-contact electromagnetic ultrasonic auxiliary welding equipment

Abstract

The invention relates to non-contact electromagnetic ultrasonic auxiliary welding equipment. The non-contact electromagnetic ultrasonic auxiliary welding equipment comprises a heat preservation chamber and a console; the heat preservation chamber is arranged on the console; a permanent magnet connecting column is fixed to a cross beam of the console; the lower end of the permanent magnet connecting column extends into the heat preservation chamber to be connected with a permanent magnet clamp; a permanent magnet is clamped by the lower end of the permanent magnet clamp; a workbench and a resistance heating device are arranged under the permanent magnet; the upper end of a lifting knob penetrates through the bottom face of the heat preservation chamber to be supported below the resistance heating device; a multi-turn coil is arranged between the permanent magnet and the workbench; the permanent magnet, the multi-turn coil and the workbench are arranged at intervals; the permanent magnet and the multi-turn coil are used for interacting to generate electromagnetic ultrasonic waves; a thermocouple is arranged at the bottom of the heat preservation chamber; the multi-turn coil and the thermocouple are both connected with the console; the heat preservation chamber is provided with an observation window and a glove connector; and the glove connector corresponds to the workbench. Ultrasonic waves are generated in liquid brazing filler metal in situ, oxidation films on the surfaces of base metal and the liquid brazing filler metal are removed, and effective connection of welding joints is achieved.

Description

Technical field: [0001] The invention relates to a welding device, in particular to a non-contact electromagnetic ultrasonic assisted welding device. Background technique: [0002] With the development of new technologies such as aviation, aerospace, nuclear energy, and electronics, the adoption of new materials and new structural forms has put forward higher requirements for connection technology, so brazing technology has received more attention and developed rapidly. . Ultrasonic assisted brazing has the advantage of being able to achieve good welding of difficult-to-wet materials under the condition of non-vacuum and no flux. When ultrasonic vibration is introduced into the liquid solder, cavitation effect can be generated in the liquid solder, cavitation The high-temperature and high-pressure micro-jet impact at the moment of bubble collapse destroys the oxide film on the metal surface. After a period of accumulation, the oxide film on the surface of the base metal is ...

AI Technical Summary

Problems solved by technology

[0004] At present, the ultrasonic assisted brazing technology is mainly realized through the contact between the ultrasonic tool head and the base metal. There are problems such as difficult control of the experimental process and possible cracking of brittle materials such as ceramics, and the current commonly used equipment is in the air environment. Brazing, when the melting point of the solder is high, the temperature is difficult to control and the heat loss is serious, it is difficult to obtain an ideal welding joint

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