Continuous production device for semisolid slurry

A technology of semi-solid slurry and preparation equipment, which is applied in the field of semi-solid metal processing to achieve the effects of uniform distribution, simple operation and convenient disassembly

Inactive Publication Date: 2013-02-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a device for continuously preparing s

Method used

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  • Continuous production device for semisolid slurry
  • Continuous production device for semisolid slurry

Examples

Experimental program
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Effect test

Example Embodiment

[0020] Example 1:

[0021] (1) The liquidus line of the ZL101A aluminum alloy used in the test is 615°C. Melt the alloy in a crucible resistance furnace. When the temperature of the alloy reaches about 720°C, use a bell jar to press the dried hexachloroethane into the melt The lower part (the addition amount is 0.5% of the total weight of the alloy liquid) is gently shaken to carry out the degassing and slag removal refining treatment of the alloy melt, and finally the temperature of the alloy melt is lowered to 630°C for heat preservation.

[0022] (2) Set the temperature of the stirring chamber of the device of the present invention to 590°C, turn on the speed-regulating motor to make the rotating speed of the stirring screw rod 500rad / min, control the graphite blockage at a certain height, and after the parameters reach the set value, smelt the previous step The alloy liquid is poured into the mixing chamber of the device of the present invention through the feed port, an...

Example Embodiment

[0023] Example 2:

[0024] (1) The liquidus temperature of the 7075 aluminum alloy used in the test is 640°C. Put the aluminum alloy ingot into a crucible resistance furnace with a preheating temperature of 400°C. After the temperature of the alloy liquid reaches 720°C, it is refined. Press the dried hexachloroethane into the lower part of the melt (the amount added is 0.5% of the total weight of the alloy liquid), and shake it gently to degas the alloy melt, remove slag and refine it, and finally melt the alloy Body temperature dropped to 650°C for heat preservation.

[0025] (2) Set the temperature of the stirring chamber of the device of the present invention to 600°C, turn on the speed-regulating motor to make the rotating speed of the stirring screw rod 500rad / min, and after the parameter reaches the set value, pass the molten alloy melted in the previous step through the feed port to continue Pour into the stirring chamber of the device of the present invention, pour ...

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Abstract

The invention relates to a ribbed-plate mixing-cone continuous production device for semisolid slurry and belongs to the technical field of processing of semisolid metals. The device comprises a discharge hole 1, a heating element 2, a cooling element 3, a mixing and cooling ribbed plate 4, a discharge hole 5, a bearing 6, a gear 7, a mixing shaft 8, a bearing block 9, a washer 10, an air hole 11, an insulation layer 12, a stainless steel cone 13, an inner graphite cone 14, a graphite stopper 15 and the like. Under cooling action of the cone walls and the ribbed plate in continuous production, slurry of alloy melt is supercooled, and under shear action of the mixing ribbed plate, the slurry in primary solid phase directly grows into spheres, and semisolid slurry is prepared. Outflowing speed of the slurry is controlled through the graphite stopper, and accordingly the semisolid slurry can be subjected to rheoforming by conventional devices such as die-casting devices, rolling devices and die-forging devices, and can also be continuously made into semisolid ingots. The continuous production device for semisolid slurry has the advantages that structure is compact, demounting is simple, temperature control precision is high, continuous production is stable and reliable, no blockage occurs, and no daily cleaning but regular monthly maintenance is required.

Description

[0001] technical field [0002] The invention relates to a device and a method for preparing a rib plate stirring cone type semi-solid slurry. The invention belongs to the technical field of semi-solid metal processing. Background technique [0003] Since the early 1970s, researchers such as M C Flemings of the Massachusetts Institute of Technology created the concept of metal semi-solid forming, and the preparation and forming technology of semi-solid metal paste has attracted widespread attention from all over the world as a new technology. Semi-solid processing is a method of forming using the characteristics of metals in the process of transitioning from liquid to solid or from solid to liquid (that is, the coexistence of liquid and solid). This new forming method combines the strengths of solidification processing and plastic processing. That is, the processing temperature is lower than that of the liquid state, the filling is stable, and the thermal impact on the mold...

Claims

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Application Information

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IPC IPC(8): B22D1/00B22D17/20
Inventor 康永林周冰郜俊震张军
Owner UNIV OF SCI & TECH BEIJING
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