Superplastic Forming Method of LC4 Aluminum Alloy Ring with Complicated Section

A technology of aluminum alloy and ring parts, applied in metal rolling, metal processing equipment, etc., can solve the problems of superplastic forming that have not been reported yet

Active Publication Date: 2017-04-05
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the superplasticity of LC4 aluminum alloy is limited to the tensile test of the material; and in the field of ring rolling, there has been no report on the superplastic forming of LC4 aluminum alloy ring parts with complex cross-sections.

Method used

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  • Superplastic Forming Method of LC4 Aluminum Alloy Ring with Complicated Section
  • Superplastic Forming Method of LC4 Aluminum Alloy Ring with Complicated Section
  • Superplastic Forming Method of LC4 Aluminum Alloy Ring with Complicated Section

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specific Embodiment approach

[0023] To implement the superplastic forming method of the LC4 aluminum alloy ring with complex cross-section described in the present invention, it is necessary to provide equipment such as a high-temperature heating furnace, a press, a manipulator, and a ring rolling mill. The diameter of the main roll of the ring rolling mill is Φ860mm. The specific implementation is as follows:

[0024] The main chemical element content (percentage by weight) of LC4 aluminum alloy is: 0.40%-0.60% Si content, 0.40%-0.60% Fe content, 1.40%-2.00% Cu content, 0.20%-0.60% Mn content, 0.20%-0.60% Mn content, The Mg content is 1.80%-2.80%, the Cr content is 0.1%-0.25%, the Zn content is 5.00%-7.00%, and the balance is Al.

[0025] The superplastic forming process steps of LC4 aluminum alloy ring parts with complex cross-section are as follows:

[0026] Cut the LC4 aluminum alloy into rods according to certain specifications; in the salt bath, heat the LC4 aluminum alloy rods to 460±10°C for 2 ho...

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Abstract

The invention discloses a super-plasticity forming method for an LC4 aluminum alloy ring part with a complex section. The method comprises the steps that an LC4 aluminum alloy is heated to the temperature of 460+ / -10 DEG C, the temperature is kept for 2 hours, and water cooling is performed; the LC4 aluminum alloy is heated to the temperature of 380+ / -10 DEG C, the temperature is kept for 6 hours, and water cooling is performed; the alloy is heated to the temperature of 200+ / -10 DEG C, after forge deformation with deflection larger than or equal to 80%, the temperature is kept at 460+ / -10 DEG C for 30 minutes, water cooling is performed, and a crystal LC4 aluminum alloy blank is obtained; the LC4 aluminum alloy blank is rapidly rolled and formed at the maximum feed speed of 2.6 mm / s at the temperature of 480-510 DEG C, and the LC4 aluminum alloy ring part with the complex section is obtained. According to the method, the LC4 aluminum alloy can be in a super-plasticity state in the forming process, so that the LC4 aluminum alloy ring part with the complex section and both the performance and the size meeting requirements is obtained. The ring part is mainly taken as a connection ring, a bearing ring and the like to be widely applied to mechanized equipment in the industry areas such as aviation and aerospace.

Description

technical field [0001] The invention relates to a superplastic forming method, in particular to a superplastic forming method of an LC4 aluminum alloy complex section ring piece. Background technique [0002] Ring parts with complex cross-sections are widely used as connections, slewing support rings, bearing rings, etc. in large-scale mechanical equipment in aviation, aerospace, construction machinery, wind power, petrochemical and other industrial fields. This kind of ring has harsh service conditions, high requirements on its performance, and the structure of the ring is complex. It is difficult to meet the performance and size requirements of the ring at the same time by using the traditional forming method. [0003] Superplastic forming technology has been widely used in aviation, aerospace and other fields due to its advantages of low deformation resistance, high material plasticity, and the ability to precisely form complex parts at one time. At present, the research...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21H1/06C22F1/053
Inventor 占立水郑永灵卢艳刘建蒋礼萍陈祖祥王斌
Owner GUIZHOU ANDA AVIATION FORGING
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