Preparation and transfer device for semi-solid rheological forming slurry of aluminum alloy wheel hub

Abstract

A semi-solid rheological forming slurry preparation and transfer device for an aluminum alloy wheel hub, including a main frame and a slurry storage and preparation system installed on it, a slurry handling device, a control and an accessory device; the main frame includes a vehicle body The main body and the bottom of the main body are connected with a moving device, and the moving device is divided into a caster type or a track type; the slurry storage and preparation system includes a sample cup placed above the main body of the body, and an electromagnetic stirrer and a measuring cup are arranged on the outside of the sample cup. A temperature and heat preservation device, an indirect ultrasonic vibration device is provided under the sample cup; the control and accessory device includes a console installed on the body of the body, a hybrid battery or power source, and a high-temperature flow sensor system that cooperates with the sample cup; The invention combines two pulping methods of indirect ultrasonic vibration and electromagnetic stirring, and then combines with a moving device to realize the preparation, storage and transportation of semi-solid pulp at a certain distance.

Description

technical field [0001] The invention belongs to the technical field of semi-solid metal processing, and in particular relates to a semi-solid rheological forming slurry preparation and transfer device for an aluminum alloy wheel hub. Background technique [0002] Since the semi-solid forming technology was proposed by Professor Flemmings of the Massachusetts Institute of Technology in the 1970s, because it combines the advantages of solid-state hot forging and liquid casting, it has good fluidity during processing, low forming force, and easy solidification. The formed tissue has high density, good uniformity, and can achieve near-net shape, which has always been the focus of researchers at home and abroad. [0003] Since the metal semi-solid slurry has rheology and thixotropy, there are two main forming process routes for semi-solid processing: Rheoforming and Thixoforming. [0004] In the early days, thixoforming was the most widely used metal semi-solid forming method du...

AI Technical Summary

Problems solved by technology

However, the ultrasonic sound pressure tends to attenuate sharply with the distance from the end face of the ultrasonic head. When the volume of the melt is large, it is difficult to distribute the crystal nuclei throughout the melt, which ultimately makes it difficult to refine the tissue far away from the ultrasonic head.

When ultrasonically treating liquid metal materials, the horn can be inserted below the liquid surface to directly act on the molten metal, but the horn inserted into the melt is easily corroded by the molten metal and pollutes the molten metal; Acting on the metal container wall to treat the metal melt in the container in an indirect way, although corrosion and pollution are avoided, but if the horn is not tightly combined with the container, the utilization rate of sound energy will be reduced

[0008] In summary, there are some shortcomings in the rheological forming semi-solid slurry transfer process: the lack of temperature control and heat preservation measures for the slurry leads to unstable solid phase ratio; the lack of measures such as electromagnetic stirring and oscillation in the slurry structure leads to the number of nucleation Reduced, the performance cannot be maintained; insufficient sealing of the device is easy to get involved in air and impurities, etc., these problems will affect the quality of the slurry and the production and processing of subsequent parts to a certain extent

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