System for in-situ synthesis aluminum matrix composite with vacuum degassing function

An aluminum-based composite material, in-situ self-generated technology, applied in the field of aluminum-based composite materials, can solve problems such as high temperature oxidation resistance

Active Publication Date: 2021-05-07
ALUMICS MATERIALS INST SHANGHAI JIAO TONG UNIV (ANHUI HUAIBEI) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • System for in-situ synthesis aluminum matrix composite with vacuum degassing function
  • System for in-situ synthesis aluminum matrix composite with vacuum degassing function
  • System for in-situ synthesis aluminum matrix composite with vacuum degassing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the pure aluminum or aluminum alloy substrate is melted at 700-760° C., the aluminum melting furnace 1 containing the aluminum melt 2 is placed on the hydraulic lifting table 10, and reaction salts and reaction aids are added for reaction. The hydraulic lifting table 10 is raised so that the dip tube 5 of the vacuum bag 3 arranged above the aluminum melting furnace 1 is immersed into the aluminum melt 2 . The vacuum chamber 8 of the vacuum bag 3 is evacuated through the pumping port 4, so that the aluminum melt 2 enters the vacuum bag 3 under atmospheric pressure.

[0041] At the same time, the aluminum melt is sprayed with argon rotation: the graphite rotor is lowered, and the rotating rod 6 of the graphite rotor passes through the sealed bearing 7 arranged on the top of the vacuum bag 3, passes through the vacuum chamber 8, and inserts the nozzle 9 into the bottom of the aluminum melt 2. At the bottom, argon gas is blown in through the midd...

Embodiment 2

[0050] Such as figure 2 As shown, the pure aluminum or aluminum alloy substrate is melted at 700-760°C, the aluminum melt 2 is placed in the aluminum melting furnace 1, and reaction salts and reaction aids are added for reaction. The immersion tube 5 of the vacuum bag 3 arranged above the aluminum melting furnace 1 is immersed into the aluminum melt 2 . The vacuum chamber 8 of the vacuum bag 3 is evacuated through the pumping port 4, so that the aluminum melt 2 enters the vacuum bag 3 under atmospheric pressure.

[0051] At the same time, the aluminum melt is sprayed with argon rotation: the graphite rotor is lowered, and the rotating rod 6 of the graphite rotor passes through the sealed bearing 7 arranged on the top of the vacuum bag 3, passes through the vacuum chamber 8, and inserts the nozzle 9 into the bottom of the aluminum melt 2. At the bottom, argon gas is blown in through the middle hole of the rotating rod 6 and ejected from the rotating nozzle 9. The formed bubbl...

Embodiment 3

[0061] Such as image 3 As shown, the pure aluminum or aluminum alloy substrate is melted at 700-760°C, the aluminum melt 2 is placed in the aluminum melting furnace 1, and reaction salts and reaction aids are added for reaction. The immersion tube 5 of the vacuum bag 3 arranged above the aluminum melting furnace 1 is immersed into the aluminum melt 2 . The vacuum chamber 8 of the vacuum bag 3 is evacuated through the pumping port 4, so that the aluminum melt 2 enters the vacuum bag 3 under atmospheric pressure.

[0062] At the same time, the aluminum melt is sprayed with argon rotation: the graphite rotor is lowered, and the rotating rod 6 of the graphite rotor passes through the sealed bearing 7 arranged on the top of the vacuum bag 3, passes through the vacuum chamber 8, and inserts the nozzle 9 into the bottom of the aluminum melt 2. At the bottom, argon gas is blown in through the middle hole of the rotating rod 6 and ejected from the rotating nozzle 9. The formed bubble...

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Abstract

The invention discloses a system for an in-situ synthesis aluminum matrix composite with a vacuum degassing function. The system comprises an aluminum smelting furnace containing an aluminum melt, a vacuum bag and a graphite rotor. The vacuum bag is provided with an immersion pipe and an extraction opening, and the immersion pipe is arranged to be capable of being immersed into the aluminum melt in the aluminum smelting furnace; and the graphite rotor is used for argon rotary injection and 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.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22B9/04C22B9/05C22B21/06
CPCC22C1/026C22B9/05C22B9/04C22B21/064C22B21/068
Inventor 王浩伟王建中李爱平
Owner ALUMICS MATERIALS INST SHANGHAI JIAO TONG UNIV (ANHUI HUAIBEI)
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