A semi-solid vibration assisted brazing equipment

Abstract

The invention provides a semisolid vibrating auxiliary brazing device which comprises a brazing part, a mechanical vibrating part, an electromagnetic vibrating part and a control part, wherein a vibration exciter is mounted under the middle position of a vibrating platform; a brazing platform is mounted above the middle position of the vibrating platform; an electromagnetic coil is arranged around the brazing platform; the electromagnetic coil, the vibrating platform and the brazing platform are free from being contacted with each other; the vibration exciter is used for driving the vibratingplatform and the brazing platform on the vibrating platform to vibrate; and the electromagnetic coil is used for generating electromagnetic stirring and vibration. Under the effect of the electromagnetic stirring and vibration, the mass transfer and heat transfer processes in a molten-pool molten metal crystallizing process are changed, thereby changing the crystallizing direction of a crystal grain, refining primary tissue, reducing segregation, promoting mechanical property of brazing joint, reducing the sensibility of the brazing defects, such as pore, crack, and the like, and realizing the high-efficient high-quality brazing between aluminum alloy and magnesium alloy as well as realizing the homogeneous brazing of the magnesium alloy and the aluminum alloy.

Description

technical field [0001] The invention relates to a semi-solid vibration auxiliary brazing equipment. Background technique [0002] The characteristic of dissimilar metal welded components is that they can maximize the use of the respective advantages of the materials, receive the effect of "making the best use of everything", and obtain better economic benefits. Due to the large difference in weldability of dissimilar metals, the welding quality and welding efficiency are low, especially the welding of dissimilar metals of magnesium and aluminum. Due to its high specific stiffness, good thermal and electrical conductivity, good electromagnetic shielding and damping performance, and low price, Mg has become one of the most promising non-ferrous metal materials in the new century. The welding of aluminum-magnesium dissimilar materials combines the high specific strength, high specific elastic modulus, high damping and shock absorption, high thermal conductivity, high electrost...

AI Technical Summary

Problems solved by technology

During the welding process, the steel wire is required to scrape the surface of the workpiece, and the removal of the oxide layer is not complete and it is not easy to realize automation. At the same time, it is easy to get involved in the gas during the scraping process, which makes the weld very easy to produce pores

[0017] In summary, the weldability of aluminum alloys and magnesium alloys is special. No matter which welding method is used, there is a high-hardness brittle Mg-Al intermetallic compound phase in the joint zone of the Mg / Al dissimilar metal welded joint, which is very important for the welding process. Improving the plastic toughness and application of Mg / Al dissimilar metal joints is unfavorable

The main reason is that the joining process is difficult to control due to the brittle Al-Mg intermetallic compound

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