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Preparation method and preparation device of self-healing aluminum alloy

A technology for preparing devices and aluminum alloys, which is applied in the direction of transmission devices, mechanical equipment, heat exchange equipment, etc., can solve the problems of narrow applicability, and achieve the effects of easy uniform distribution, good convenience, and convenient disassembly and demoulding

Inactive Publication Date: 2017-03-29
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method has narrow applicability and requires a specific alloy system

Method used

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  • Preparation method and preparation device of self-healing aluminum alloy
  • Preparation method and preparation device of self-healing aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] 1. Casting mold processing of self-repairing aluminum alloy

[0036] 45# steel is used to process the casting mold, the size is as follows figure 1It is shown that the length, width and height of the mold are 130mm×45mm×60mm, and the internal cavity size of the mold is 90mm×20mm×40mm. At the same time, the mold is split along the axial direction. The mold fixture is made of ordinary steel and fixed with four upper and lower bolts. Clamp and assemble the split mold with a jig. Assembled molds such as figure 2 shown. When the casting is completed, the bolts can be removed, the clamps can be loosened, and the two sides of the mold can be separated to take out the casting.

[0037] 2. Arrangement of low melting point alloy microtubes

[0038] The inner wall of the microtube is roughened in advance, such as pickling, to improve the wettability between the low melting point alloy and the base metal, thereby enhancing the bonding force. Use aluminum foam as the support...

example 2

[0044] Dimensions of casting molds for self-healing aluminum alloys are as in Example 1. Aluminum oxide tubes are used for low-melting point alloy microtubes, and the arrangement is still as in Example 1. The base alloy is 2-series aluminum-copper-magnesium Al-Cu-Mg alloy with a melting temperature of 720°C and a heat preservation time of 20 minutes. The casting process and low melting point alloy packaging are the same as in Example 1. The self-healing alloy can also repair voids or cracks with a size ≧1mm.

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Abstract

The invention discloses a preparation device for self-repairing aluminum alloy. The preparation device comprises a casting mold and a clamp of the casting mold. The casting mold is composed of a left part and a right part which are symmetrical. A casting area for the self-repairing aluminum alloy is formed between the two parts. The clamp is composed of two clamp steel plates which are arranged in parallel. The left part and the right part of the casting mold which is arranged in the middle and composed of the left part and the right part are clamped through four bolts which are arranged at the two ends of the clamp steel plates in the vertically-symmetrical mode, wherein the left part and the right part are symmetrical. The bottom of the casting mode and the bottom of the clamp are placed on a bottom steel plate gasket. When the self-repairing aluminum alloy is cast, the bolts are detached, the clamp is released, and a casting can be taken out by separating the two sides of the mold. The homemade casting mold is adopted, the simple casting method is adopted, a low-melting-point alloy self-repairing reinforced micro pipe is uniformly packaged in a base aluminum alloy material, and therefore the aluminum alloy composite material with the good self-repairing performance is successfully prepared and has great application prospects in the aerospace field, the war industry and petroleum industry field and other fields.

Description

technical field [0001] The invention belongs to the technical field of preparation of materials for space movement of spacecraft, and in particular relates to a preparation method of a self-repairing aluminum alloy and a preparation device of the aluminum alloy. Background technique [0002] Space debris is one of the greatest dangers to spacecraft. Due to the high speed of debris movement, its actual destructive power is huge. If it is hit by space debris with a diameter of 1mm, the depth of the impact crater can reach 2.17mm, which can penetrate a 4.8mm thick aluminum plate, and the perforation diameter can reach 4.7mm. Therefore, the current aerospace industry mainly relies on early warning and avoidance methods to deal with space debris, but there are still many tiny debris that are difficult to detect, avoid and protect. In this case, lightweight high-strength alloy materials with excellent self-repairing properties will play As an important new material, self-healing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/00
CPCB22D19/10
Inventor 孙伟王勇孙立臣闫荣鑫孟冬辉邵容平任国华李唯丹綦磊赵月帅
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG