Squeeze casting equipment based on power ultrasonic and pressure coupling

Abstract

The invention discloses a squeeze casting method and equipment based on the coupling of power ultrasound and pressure. The method is to simultaneously apply power ultrasound and pressure to a metal melt, and change the physical structure of the metal melt through the synergistic coupling of pressure and power ultrasound. Then, while cooling the mold cavity, the corresponding experimental data is collected and processed through data acquisition; its equipment includes mold cavity, heat preservation heater, punch, power ultrasonic generator, mold cooling system and data collector, mold The wall of the mold cavity is equipped with a heat preservation heater, the punch is set above the mold cavity, the power ultrasonic generator is set on the side of the mold cavity, the mold cavity is equipped with a mold cooling system, the data collector and the mold mold The outer side of the lumen wall is connected. The invention has a simple principle, can improve the efficiency and speed of squeeze casting, effectively improve the microstructure and performance of the metal melt, and also builds a platform for subsequent experiments, and the real-time measured data can help in-depth experimental analysis.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a squeeze casting method and equipment based on power ultrasonic and pressure coupling. Background technique [0002] The quality of metal products (such as ingots, castings, etc.) directly depends on the quality of metal melts. Therefore, in the process of metal material processing, the forming process and treatment methods of metal melts are particularly important. Compared with other casting forming methods, the extrusion casting forming process has the advantages of uniform and compact structure, excellent mechanical properties, high surface finish and high dimensional accuracy, so it is widely used in machinery, automobiles, home appliances, aviation, aerospace, national defense and other fields. [0003] Ultrasound usually refers to frequencies higher than 2×10 4 Hz sound waves can be divided into detection ultrasound, power ultrasound and medical ultras...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing research methods are all focused on immersing the ultrasonic tool bar into the metal melt to be treated for ultrasonic treatment. This method can improve the quality of the metal melt to a certain extent, but this method is only for the metal melt. The effect of a single physical field has not been studied in combination with the processing technology of squeeze casting, so there is still room for improvement in the quality of the metal melt

[0005] There are two ways to introduce power ultrasound into molten metal: direct introduction and indirect introduction. The direct introduction method is limited by factors such as space size and possible pollution; Acting on the metal melt through the medium, such introduction may cause loss of ultrasonic energy

At present, there are studies that pass the current through the coil to generate electromagnetic force, and through the electromagnetic force, the ultrasonic tool rod is adsorbed on the surface of the crucible containing the metal melt. Using this method, the power ultrasonic can be indirectly introduced into the metal melt, but the attenuation law of the ultrasonic is relatively complicated. , cannot be quantitatively analyzed

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