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

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...

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-based base material, resulting in uneven distribution of SiC particles, which directly affects the mechanical properties of the composite.

The second process, which uses feeding and casting under vacuum conditions, is relatively expensive, suitable for small batch production, and cannot achieve industrial production

Therefore, the production cost increases accordingly

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