High-pressure counter-pressure casting method of Al-5 percent Cu base alloy

A technology of al-5%cu and differential pressure casting machine, which is applied in the field of high-pressure differential pressure casting of Al-5%Cu-based alloys, which can solve the problems of low density, low tensile strength of Al-5%Cu-based alloys, and elongation. Low rate and other problems, to achieve the effect of improving density, improving tensile strength and elongation mechanical properties, and improving feeding ability
CN101653825BInactive Publication Date: 2011-06-15HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-06-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-pressure counter-pressure casting method of an Al-5 percent Cu base alloy, solving the problems of little tensile strength, low extensibility and low density of an Al-5 percent Cu base alloy obtained by the prior counter-pressure casting method. The casting method comprises the following steps: (1) adjusting a counter-pressure casting machine to form a high-pressure counter-pressure casting machine; (2) weighting and welding raw materials to obtain a melt; and (3) carrying out the high-pressure counter-pressure casting on the melt to obtain Al-5 percent Cu basealloy. The casting method combines a high-pressure solidification technology and a counter-pressure casting technology, and the obtained Al-5 percent Cu base alloy achieves the tensile strength of 519.5 MPa, the extensibility of 16.97 percent and high density. The invention can be favorably applied to the aerospace industry, the nuclear industry and the weapon industry.
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Description

technical field

[0001] The invention relates to a differential pressure casting method of Al-5% Cu base alloy. Background technique

[0002] As a kind of aluminum alloy material, Al-Cu alloy has very high mechanical properties at room temperature and high temperature, especially a wide range of strength and elongation indicators, great performance potential, and obvious heat treatment strengthening. It is widely used in aviation, aerospace, Automobile, machinery and other industries. The Al-5% Cu-based alloy (ZL205A) in the Al-Cu system is a high-strength cast aluminum alloy developed by my country, and it is one of the cast aluminum alloys with high strength in the world's industrial production. It has gradually shown a wide range of application prospects in industry and weapon industry.

[0003] In recent years, with the development of the aerospace industry, the demand for large, complex, thin-walled, precise, high-quality high-strength aluminum alloy castings has been i...

Claims

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