Method for in-situ synthesis aluminum matrix composite material and with permanent magnet stirring process

A technology of aluminum-based composite materials and permanent magnetic stirring, which is applied in the field of aluminum-based composite materials and can solve problems such as high-temperature oxidation resistance

Pending Publication Date: 2021-05-11
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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  • Method for in-situ synthesis aluminum matrix composite material and with permanent magnet stirring process
  • Method for in-situ synthesis aluminum matrix composite material and with permanent magnet stirring process
  • Method for in-situ synthesis aluminum matrix composite material and with permanent magnet stirring process

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 middl...

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 method for an in-situ synthesis aluminum matrix composite material and with a permanent magnet stirring process. The method comprises the steps that a vacuum bag which comprises an air exhaust opening and an immersion pipe is provided; a permanent magnet stirring device is provided and comprises a track and a carrier, wherein the track and the carrier are arranged below an aluminum smelting furnace, the carrier can move on the track, and a permanent magnet device, a motor and a transmission belt are arranged on the carrier; after pure aluminum or an aluminum alloy matrix in the aluminum smelting furnace is molten, reaction salt and reaction auxiliaries are added to react, the immersion pipe of the vacuum bag can be immersed in an aluminum melt, and a vacuum chamber is vacuumized through the air exhaust opening; a graphite rotor descends; argon blowing is carried out through an argon blowing pipe and an outer pipe; powder in a powder conveying bin is blown into the aluminum melt through a powder conveying pipe and an inner pipe; and the carrier moves to the bottom of the aluminum smelting furnace through the track, and the permanent magnet stirring device is started to stir 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): C22C1/06C22C1/10C22C21/00C22C32/00
CPCC22C1/06C22C1/1036C22C21/00C22C32/0073C22C1/1052
Inventor 王浩伟王建中李爱平
Owner ALUMICS MATERIALS INST SHANGHAI JIAO TONG UNIV (ANHUI HUAIBEI)
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