Method for manufacturing high-strength 7055 aluminum alloy forge piece formed by spraying

A technology of spray forming and manufacturing method, which is applied in the field of aluminum alloy manufacturing to achieve the effects of stable quality, no component segregation, and improved mechanical properties
CN101695753AInactive Publication Date: 2010-04-21JIANGSU HAORAN SPRAY FORMING ALLOY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HAORAN SPRAY FORMING ALLOY
Publication Date
2010-04-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to a manufacturing technology of aluminum alloy and relates to a method for manufacturing a high-strength 7055 aluminum alloy forge piece formed by spraying. The method sequentially comprises the following steps: (a) melting components of 7055 alloy in an intermediate frequency furnace; (b) degassing, deslagging, refining and filtering an aluminum alloy fusant; (c) forming the filtered fusant by spraying to obtain a columnar aluminum alloy ingot blank; (e) carrying out hot extrusion on the aluminum alloy ingot blank formed by spraying; (f) constantly cutting the extrusion ingot as required and then carrying out free forging; (g) carrying out blocker-type forging and / or stamp forging on the blank after the free forging to obtain a stamp forging piece; and (h) carrying out T6 heat treatment on the stamp forging piece. A large-specification and high-property 7055 product can be obtained by using the method which is suitable for industrial production.
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Description

technical field

[0001] The invention belongs to the manufacturing technology of aluminum alloys, and relates to a manufacturing method of high-strength spray-formed 7055 aluminum alloy forgings. Background technique

[0002] High-strength and tough aluminum alloy is the main structural material of aerospace vehicles represented by large aircraft. The main body is 7XXX series (Al-Zn-Mg-Cu) aluminum alloy with Zn as the main alloying element, which has high specific strength, good plasticity, Low density and other advantages, also known as ultra-high-strength aluminum alloy.

[0003] 7055 aluminum alloy is an ultra-high zinc content aluminum alloy developed in the United States. It is the highest strength aluminum alloy currently used in practice and belongs to a typical 7XXX aluminum alloy. The existing 7055 aluminum alloy at home and abroad is produced by traditional casting. The casting process has shortcomings such as coarse grains, serious segregation, and low solid solu...

Claims

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