Casting process of 7475 aluminium alloy slab ingot

A technology of aluminum alloy and flat ingot, which is applied in the field of aluminum alloy casting, can solve problems such as cracks and porosity easily, and achieve the effect of improving the purity of the melt, preventing cracks, and strengthening grain refinement
CN103572081AInactive Publication Date: 2014-02-12JIANGSU JIANGXU CASTING GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU JIANGXU CASTING GROUP
Publication Date
2014-02-12
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a casting process for a 7475 aluminium alloy slab ingot. By the control to chemical components, regulation of the casting stress, improvement on melt purity, strengthening of grain refinement and the like, the defects of cracks and loosening of the 7475 aluminium alloy slab ingot in the casting process are prevented.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy casting, and in particular relates to a 7475 aluminum alloy flat ingot melting and casting process. Background technique

[0002] 7475 aluminum alloy is used to produce aerospace structural parts, which are required to have high strength, high toughness, fatigue resistance, corrosion resistance and other properties, and the final products are required to pass Class A flaw detection inspection and fracture oxide film inspection. In order to ensure the performance and service life of alloy products, in the melting and casting stage, in addition to requiring good casting and forming, the main components should be strictly controlled to reduce the impurity content and ensure the high purity of the metal.

[0003] At present, cracks and loose defects are prone to occur during casting of 7475 aluminum alloy flat ingots. Contents of the invention

[0004] The object of the present invention is ...

Claims

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