Stirring device and stirring method for preparing aluminum alloy semi-solid composite slurry and application

A technology of stirring device and composite slurry, which is applied in the direction of stirring device, lighting and heating equipment, process efficiency improvement, etc. Uniformity effect and other problems, to achieve the effect of excellent microstructure, fine grain and excellent performance

Active Publication Date: 2022-03-08
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the actual production of semi-solid slurry and metal matrix composites by mechanical stirring, there will be a dead zone that cannot be reached by mechanical stirring, and defects such as excessive temperature difference between the upper and lower layers are prone to occur, which will affect the uniformity of the slurry
Ultrasonic vibration is severely attenuated in the molten metal, and it is difficult to reach deep or wide areas.
The microstructure near the horn area is refined, and the microstructure grains in the area far away from the horn are coarse, which makes the microstructure of the treated alloy melt uneven

Method used

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  • Stirring device and stirring method for preparing aluminum alloy semi-solid composite slurry and application
  • Stirring device and stirring method for preparing aluminum alloy semi-solid composite slurry and application
  • Stirring device and stirring method for preparing aluminum alloy semi-solid composite slurry and application

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Effect test

Embodiment 1

[0045] see Figure 1 ~ Figure 3, this embodiment provides a stirring device for preparing aluminum alloy semi-solid and aluminum-based composite slurry, including a cylinder 1, a stirring rod 2, a mounting base 3, a double-joint universal coupling 4 and an ultrasonic amplitude changer pole 5. The barrel 1 of this embodiment has a cavity inside, and the bottom is provided with a through hole 11 communicating with the cavity, the upper end of the stirring rod 2 is arranged in the cavity through the through hole 11, and the lower end of the stirring rod 2 is provided with a stirring paddle. The installation base 3 is arranged on the upper end of the cylinder body 1, and the inside of the installation base 3 is provided with an installation groove, and the structure of the installation groove matches the structure of the double joint universal coupling, and the installation groove communicates with the above-mentioned cavity. The double-joint universal coupling 4 is installed in...

Embodiment 2

[0048] see Figure 1 ~ Figure 3 , this embodiment provides a stirring device for preparing aluminum alloy semi-solid and aluminum-based composite slurry.

[0049] In order to ensure that the stirring rod 2 can be driven to rotate, a mounting hole 31 is provided on one side of the mounting base 3 in this embodiment, and the mounting hole 31 communicates with the mounting groove, and the mounting hole 31 is used for connecting the output shaft of the drive mechanism Double joint universal coupling 4 transmission connection.

Embodiment 3

[0051] In this embodiment, on the basis of Embodiment 1, in order to ensure that the second phase structure is uniformly dispersed into the aluminum liquid, there is a gap between the stirring rod 2 and the cavity wall in this embodiment, and on the side wall of the cylinder 1 A feed port 12 is provided, and the feed port 12 communicates with the above-mentioned gap. Through the feed port 12, the second phase tissue, such as graphene, can be added into the gap. The generator enables mechanical stirring to be carried out in the center of the ultrasonic field, thereby ensuring the simultaneous action of mechanical stirring and ultrasonic vibration, which is conducive to the formation of a slurry with fine grains, uniform structure, and excellent microstructure.

[0052] The graphene particles added in this embodiment are slowly pushed into between the cylinder 1 and the stirring rod 2 from the feeding port 12 at a constant speed, and are naturally added to the molten aluminum in ...

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Abstract

The invention belongs to the technical field of aluminum alloy semi-solid slurry preparation, and discloses a stirring device and method for preparing aluminum alloy semi-solid composite slurry and application, and the device comprises a base, a stirring mechanism and an ultrasonic mechanism; the stirring mechanism is arranged on the base and comprises a driving motor, a transmission rod, a two-section universal coupling and a stirring rod; the driving motor is arranged on the base; the transmission rod is horizontally arranged above the base, one end of the transmission rod is connected with the driving motor, and the other end of the transmission rod is in transmission connection with the stirring rod through the two-section universal coupling; the stirring rod is vertically arranged, and a stirring paddle is arranged at the lower end of the stirring rod; and the ultrasonic mechanism and the stirring rod are coaxially arranged. The stirring device disclosed by the invention can be used for simultaneously carrying out ultrasonic stirring and mechanical stirring on the slurry, so that the semi-solid and aluminum-based composite slurry with excellent performance, uniform structure and fine crystal grains is finally prepared.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy semi-solid slurry preparation, in particular to a stirring device, a stirring method and application for preparing aluminum alloy semi-solid composite slurry. Background technique [0002] Semi-solid metal casting molding technology (SSM) has more than 20 years of research and development history. It is a kind of material molding that processes a solid-liquid mixture containing dendrites in the temperature range between the liquidus line and the solidus line. Technology, known as "the most promising green industrial technology in the 21st century", semi-solid molding technology can significantly reduce processing costs, improve production efficiency, and finally achieve near-net molding. [0003] The stirring casting process is the earliest method to prepare semi-solid slurry, and it is also the most widely used method at present. During the solidification process, the metal material is vig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/10C22B9/02F27D27/00C22C21/00
CPCC22B9/026F27D27/00C22C1/1036C22C21/00C22C1/12C22C1/1047Y02P10/20
Inventor 张晋崔瀚中杨洲范龙毅管仁国
Owner DALIAN JIAOTONG UNIVERSITY
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