Method for in-situ synthesis aluminum-based composite material with vacuum degassing function

Abstract

The invention discloses a method for an in-situ synthesis aluminum-based composite material with a vacuum degassing function. The method comprises the following steps of providing a vacuum bag comprising an extraction opening and an immersion pipe, and arranging the immersion pipe to be capable of being immersed into an aluminum melt in an aluminum smelting furnace; providing a graphite rotor used for argon rotary injection, wherein the graphite rotor is provided with a rotating rod and a spray head, the rotating rod is arranged to penetrate through a vacuum chamber of the vacuum bag through a sealing bearing arranged at the top of the vacuum bag, and the spray head is inserted into the bottom of the aluminum melt; providing a hydraulic lifting platform; melting pure aluminum or an aluminum alloy matrix in the aluminum smelting furnace, adding reaction salt and a reaction auxiliary agent for a reaction, and placing the aluminum smelting furnace on the hydraulic lifting platform; lifting the hydraulic lifting platform, so that the immersion pipe of the vacuum bag is immersed in the aluminum melt, and vacuumizing the vacuum chamber through the extraction opening; and lowering the graphite rotor, so that the rotating rod penetrates through the vacuum chamber of the vacuum bag through the sealing bearing arranged at the top of the vacuum bag, and inserting the spray head into the bottom of the aluminum melt for argon rotary blowing.

Description

technical field [0001] The invention relates to aluminum-based composite materials, in particular to the preparation of in-situ self-generated aluminum-based composite materials. Background technique [0002] The in-situ self-generated aluminum matrix composite material is to use the chemical reaction between different elements or chemicals under certain conditions to generate one or several ceramic phase particles in the aluminum matrix to achieve the purpose of improving the performance of a single metal alloy. The composite material prepared by in-situ self-generation has no pollution on the surface of the reinforcement, and the compatibility between the matrix and the reinforcement is good. By selecting the reaction type and controlling the reaction parameters, different types and quantities of in-situ reinforced particles can be obtained. [0003] However, the in-situ self-generated aluminum matrix composites have high requirements on the conditions including degassing...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the aluminum melt degassing rotors are made of graphite material, because graphite material has excellent thermal shock resistance and can be machined, and aluminum liquid does not infiltrate graphite, but the weakness of graphite material is that it is not resistant to high temperature oxidation, resulting in long service life. Only need to replace in 14-20 days

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