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QTi3.5-10 graphite semi-solid size mechanical stirring producing method

A semi-solid slurry, mechanical stirring technology, applied in mechanical equipment, stirring device, lighting and heating equipment, etc., can solve the problem of inability to directly prepare graphite semi-solid slurry

Inactive Publication Date: 2007-01-03
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
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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 "cannot directly prepare QTi3.5-10 graphite semi-solid slurry from liquid state" existing in the conventional mechanical stirring method, and provide a method that can prepare graphite particles uniformly suspended in QTi3.5 Preparation method of QTi3.5-10 graphite semi-solid slurry in titanium bronze melt

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  • QTi3.5-10 graphite semi-solid size mechanical stirring producing method

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Embodiment Construction

[0023] In conjunction with accompanying drawing, the specific description of the inventive method to prepare QTi3.5-10 graphite semi-solid slurry device is as follows:

[0024] The mechanical stirring preparation device of QTi3.5-10 graphite 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 arc-shaped straight 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 st...

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Abstract

A QTi3.5-10 black lead half-solid slurry mechanical whisk and preparation method belong to the QTi3.5-10 black lead half-solid research field. It uses peripheral and downward movements, which formed by the rotating of continuous up and down locomotive double arc straight blades, to break up the juvenile solid state formed during QTi3.5 melt solidification process and keep adding black lead grain to QTi3.5 melt. Change rotating way of the double arc straight blades to keep the disperse effect of the black lead grain, when QTi3.5 melt peripheral movement estate approaches the same estate of double arc straight blades. Use high viscosity of QTi3.5 melt and juvenile solid state grain to stop float of the black lead grain and get QTi3.5-10 black lead half-solid slurry, and also solve the problem that it couldn't get QTi3.5-10 black lead half-solid slurry directly form liquid state with conventionality engine.

Description

technical field [0001] The invention relates to a mechanical stirring preparation method of QTi3.5-10 graphite semi-solid slurry. Background technique [0002] According to reports in the literature "Flemings M. Behavior of metal alloys in the semisolid state, MetallTrans, 1991, 22A: 957-981" and "Mao Weimin. Semisolid Metal Forming Technology, Beijing: Mechanical Industry Press, 2004", the mechanical stirring method is It is an effective method to prepare semi-solid slurry from a high-temperature liquid state by cooling and stirring. The principle is: during the cooling and solidification process of the prepared liquid, the primary dendrites are broken by means of regular circumferential motion generated by mechanical stirring, forming Semi-solid slurry in which spherical or ellipsoidal primary solid phase particles are suspended in the liquid phase. QTi3.5-10 graphite composite material has the advantages of QTi3.5 titanium bronze's good electrical conductivity, high stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D23/04C22C1/10C22C9/00F27D27/00
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV
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