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Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring

A semi-solid slurry, mechanical stirring technology, applied in chemical instruments and methods, mixers, dissolution and other directions, can solve problems such as complex equipment structure, and achieve the effect of solving complex equipment structure

Inactive Publication Date: 2006-11-08
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiency of "complex equipment structure" existing in the existing preparation method, and to provide a kind of aluminum 20 tin semi-solid slurry capable of preparing tin droplets evenly suspended in the aluminum 20 tin melt Preparation method of mechanical stirring

Method used

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  • Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring
  • Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring
  • Method for preparing aluminium 20 tin semi solid slurry by mechanically stirring

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Embodiment Construction

[0023] The specific description of the aluminum 20 tin semi-solid slurry device prepared by the inventive method in conjunction with the accompanying drawings is as follows:

[0024] The mechanical stirring preparation device for aluminum 20 tin semi-solid slurry is mainly composed of a mechanical stirrer and its drive and up and down movement control device, graphite crucible 3, upper cover 8, plug 7, Ar gas pipe 9 and thermocouple 10.

[0025] The graphite crucible 3 is fixed on the base frame 11 by means of mechanical connection, and the heating pipe 4 and the cooling pipe 5 are evenly distributed in the wall, and are respectively connected with the external power supply and the cooling liquid supply system;

[0026] The mechanical stirrer is composed of a circular stirring rod 1 and four double-sided double-curved blades 2, and the material is heat-resistant ceramics; the lower end of the circular stirring rod 1 is square, and its four sides are tangent to the circular stir...

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Abstract

The mechanically stirring method of preparing semi-solid Al20Sn slurry utilizes one rotating double-sided double arc blade device moving vertically to produce circumferential motion, inward motion and upward motion of the Al20Sn melt to break the initial solid phase of the melt, stir the melt and arrest the centrifugal motion and precipitating motion of the liquid Sn drop. The rotating direction of the blades is changed alternately. The present invention has excellent stirring effect so as to form homogeneously distributed semi-solid Al20Sn slurry in apparatus in simple structure.

Description

technical field [0001] The invention relates to a method for preparing aluminum 20 tin semi-solid slurry by mechanical stirring. Background technique [0002] Publication number: CN1740369A, title of invention: "A method for preparing aluminum 20 tin semi-solid slurry", described the method for preparing aluminum 20 tin semi-solid slurry, the basic technical scheme is as follows: 1) use electromagnetic stirring device to break The primary dendrites formed during the solidification of the Al-20-Sn alloy liquid; 2) Using a mechanical stirring device to prevent the centrifugation and sedimentation of the tin droplets to obtain an Al-20-Sn semi-solid slurry with evenly distributed tin droplets. In this method, the joint action of the electromagnetic stirring device and the mechanical stirring device prevents the centrifugation and sedimentation of tin droplets caused by the difference in density between aluminum and tin, and obtains an aluminum-20-tin semi-solid slurry with unif...

Claims

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Application Information

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IPC IPC(8): C22C1/02B01F13/08C22C45/08C22F3/02
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV
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