Spinning deformation preparation method for particle reinforced aluminum-based composite pipe

A particle-reinforced aluminum and composite material technology, applied in the field of metal matrix composite material pipe processing, can solve problems such as easy cracking and poor plasticity

Active Publication Date: 2017-06-06
有研金属复材技术有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor plasticity of hot isostatic pressing blanks of particle reinforced aluminum matrix composites and easy cracking during deformation, the invention provides a spinning deformation preparation method of particle reinforced aluminum matrix composites. After mixing raw material powders, cold pressing, hot Spinning blanks prepared by isostatic pressing, characterized in that the spinning blanks prepared by hot isostatic pressing are directly hot-spun and opened

Method used

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Examples

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Embodiment Construction

[0014] The invention provides a method for preparing particle-reinforced aluminum-based composite material by spinning deformation, and the following specific examples will further illustrate the invention.

[0015] The size of the spinning blank prepared by hot isostatic pressing is: inner diameter 80.5±0.2mm, wall thickness 16±0.1mm, length 300±5mm; inner diameter 240±0.2mm, wall thickness 32±0.1mm, length 400±5mm; inner diameter 530±0.2mm, wall thickness 50±0.1mm, length 600±5mm.

[0016] The steps of blank spinning deformation are as follows:

[0017] (1) Heat the mandrel to 450±10°C;

[0018] (2) Install the blank on the mandrel and heat the blank to 450±10°C;

[0019] (3) The thinning rate of the first pass is 15%, the feed speed is 80mm / min, the rotation speed is 80r / min, and the temperature in the deformation zone is guaranteed to be controlled at 370-450°C;

[0020] (4) Heating the billet to 500±10°C, cooling naturally to 450±10°C, and annealing;

[0021] (5) The ...

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Abstract

The invention discloses a spinning deformation preparation method for a particle reinforced aluminum-based composite pipe, and belongs to the technical field of metal-based composite processing. A spinning blank prepared by adopting a powder metallurgy method is subjected to the hot-spinning and cogging operation and the warm-spinning finished product preparing operation to obtain the composite pipe, wherein the deformation temperature of the hot-spinning and cogging operation is 290-450 DEG C, the number of the spinning passes is five, and on-line annealing treatment is carried out between every two spinning passes. According to the method, the deformation of the first two spinning passes is small, and the inner surface of the blank is prevented from cracking; and a wire annealing process is adopted between the spinning passes, and machining hardening is eliminated. The particle reinforced aluminum-based composite large-diameter and thin-wall pipe prepared through the spinning method can be widely applied to aerospace vehicles.

Description

technical field [0001] The invention belongs to the technical field of metal-matrix composite material pipe processing, and in particular relates to a spinning deformation preparation method of particle-reinforced aluminum-matrix composite material pipe. Background technique [0002] At present, the pipes for a ship in China are mostly made of aluminum alloy or steel. The main problem is that the aluminum alloy has low rigidity, while the steel parts increase the weight of the cylinder, which seriously restricts the product in complex environments (such as sea water). under the use. Particle-reinforced aluminum-based composite materials have the advantages of low specific density, high specific stiffness, and high specific strength. In recent years, aluminum-based composite materials have been used to manufacture pipes abroad, but there is still no related work in China, which restricts further upgrading of products. . [0003] The powerful spinning process is to use the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/16B22F3/15C22F1/04
CPCB21D22/16B22F3/15C22F1/04
Inventor 柴国强李德富魏少华
Owner 有研金属复材技术有限公司
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