Technique of preparing novel grain reinforced aluminum base composite material and special equipment thereof

A technology for particle-reinforced aluminum and composite materials, which is applied in the field of preparation technology and equipment of metal matrix composite materials, can solve problems such as affecting the mechanical properties of composite materials, uneven distribution of SiC particles, and inability to achieve industrialized production, and achieves simplified melting pool and Mixing pool system, simple structure, convenient control effect

Inactive Publication Date: 2008-06-11
汪喜和
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that as the protective gas rises, small bubbles adhere to the SiC particles and float to the liquid surface, forming a certain amount of scum, and reducing the content of SiC particles in the composite material
In addition, during the process of mechanical stirring, the SiC particles are not in complete contact with the Al-base

Method used

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  • Technique of preparing novel grain reinforced aluminum base composite material and special equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example one, see figure 1 In the figure, the melting pool 3 and the mixing pool 6 of the special equipment used in the preparation method of the new particle-reinforced aluminum-based composite material are connected in a conjoined structure. They are longitudinally separated by a cavity 2 with an open upper end. The lower end of the body wall is provided with a communicating hole, the opening and closing valve 4 is provided at the communicating hole, the cavity 2 is arranged in an open shell 5, and a heating device 8 is arranged between the cavity 2 and the open shell 5 And the heat preservation device 1, the upper end of the open shell 5 is provided with an end cover 14, the end cover 14 above the melting pool 3 is provided with a matrix alloy feeding hole 13 and a sealing cover, and the end cover 14 above the mixing pool 6 is provided with silicon carbide The feeding hole 12 and the sealing cover, the mixing tank 6 is respectively provided with a stirring device 11, a di...

Example Embodiment

[0039] The second embodiment is basically the same as the first embodiment, but the difference lies in:

[0040] The aluminum base alloy is 6061. The volume of the aluminum base alloy accounts for 90% of the total volume of the raw material. The average particle size of SiC is 12μm. The surface oxidation treatment of SiC is carried out at 900℃×0.8h. The volume of SiC accounts for 10% of the total volume of the raw material. %; The stirring time is 1h, the stirring speed is 600r / min, and finally the product is directly cast by the mold. The rest is the same as the first embodiment.

Example Embodiment

[0041] The third embodiment is basically the same as the first embodiment, but the difference lies in:

[0042] The aluminum base alloy is 6061, the volume of the aluminum base alloy accounts for 80% of the total volume of the raw material, the volume of SiC accounts for 20% of the total volume of the raw material, the stirring time is 0.8h, and the stirring speed is 800r / min. The rest is the same as the first embodiment.

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Abstract

The invention discloses a preparation process and the special equipment thereof for novel grain intensifying aluminum radical composite material. The melting and mixing process of the preparation method are performed in a body-connected sealing equipment, the aluminum matrix alloy is added through a charging opening of a melting pool, after the aluminum matrix alloy is melted, a valve at the bottom part of the melting pool is opened, the melted liquid state aluminum matrix alloy directly flows into the mixing pool, when the liquid level of the mixing pool reaches the defined height, the valve is closed, the pretreated SiC is added through a charging opening at the top part of the mixing pool, a charging rod adopting an aluminum casing as covering material is adopted when material is charged, as the aluminum casing of the charging rod is melted, the SiC is melted in the aluminum matrix alloy, then the material is sent into the die assembly through a discharging pump, and directly made into billet material or a product. In the invention, the melting and the mixing are effectively combined, the system of melting pool and mixing pool is simplified, the structure is simple, the controlling is simple, the cost is reasonably reduced, the content of the silicon carbide grain in the aluminum radical composite material of the product is stable and uniformly distributed, and the whole performance of the aluminum radical composite material is enhanced.

Description

1. Technical field: [0001] The invention relates to a preparation process and equipment of a metal-based composite material, in particular to a preparation process and special equipment for an aluminum-based composite material. 2. Background technology: [0002] Metal matrix composites have a series of performance advantages such as high specific strength, specific modulus and specific stiffness, good high temperature performance and wear resistance, stable size, small thermal expansion coefficient and adjustable. At present, this material, especially the aluminum-based composite material, has been applied in aerospace, military, energy, automobile and other industries. From the perspective of development trend, the scope of application of this material will change from high-tech applications to general industrial and civil applications with the continuous maturity of its preparation technology and the continuous decline of costs. [0003] In fact, the main reason that limi...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/00B22D21/04
Inventor 汪喜和范林
Owner 汪喜和
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