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Solid particle medium thermal expansion forming method for light alloy tubular component

A technology of solid particles and tubular components, which is applied in the field of solid particle medium thermal expansion forming of light alloy tubular components, can solve the problems of restricting wide application and difficulty in applying the forming temperature range, and achieve simple process control, good chemical stability and mechanical properties , The effect of improving the forming limit

Inactive Publication Date: 2014-07-02
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of high-pressure valves, seals, pipelines, and the heat resistance of the pressure transmission medium in the pressurization and transmission system, it is difficult to apply to a higher forming temperature range
At the same time, expensive external special pressurization equipment and control systems also limit the wide application of this process

Method used

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  • Solid particle medium thermal expansion forming method for light alloy tubular component
  • Solid particle medium thermal expansion forming method for light alloy tubular component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, the upper pressing head 1, the upper pressing cover 2, the upper die 4, the lower die 7, the lower pressing head 8, and the lower pressing head 9 in the mold device are closed and preheated to the process setting temperature of AA5052 aluminum alloy pipe 6 forming 270 ℃, the heating device 3 adopts resistance heating and a closed-loop temperature control system, and at the same time, the steel ball particle medium 5 is heated externally by a heating furnace, and preheated to a process setting temperature of 270°C; the mold is closed, and the lower gland and the lower pressure head are moved To the set position, the moving positions of the lower gland and the lower pressure head are respectively set according to the length of the tube blank and the filling volume of the heat-resistant solid granular medium. Put the AA5052 aluminum alloy tube blank into the cavity of the above-mentioned heated mold, and fill the above-mentioned heated heat-resistant solid particle m...

Embodiment 2

[0020] First, close and preheat the upper pressing head, upper gland, upper mold, lower mold, lower gland, and lower pressing head in the mold device to the process setting temperature of TC4 titanium alloy pipe forming at 850°C. The heating device adopts intermediate frequency heating and Closed-loop temperature control system. At the same time, the heat-resistant ceramic granular medium is heated externally by the heating furnace, and preheated to the process setting temperature of 850°C; the mold is closed, and the lower gland and the lower pressure head are moved to the set position, and the lower gland and the moving position of the lower pressure head are respectively set according to the length of the tube blank and the filling volume of the heat-resistant solid granular medium. Put the TC4 titanium alloy tube blank into the cavity of the above-mentioned heated mold, and fill the above-mentioned heated heat-resistant solid particle medium into the cavity formed by the tu...

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Abstract

A solid particle medium thermal expansion forming method for a light alloy tubular component mainly includes: preheating a mould device and a heatproof solid particle medium; closing a mould and moving a lower pressure cover and a lower pressure head to set positions which are set according to tube blank length and heatproof solid particle medium filling size respectively; putting a tube blank in a cavity of the heated mould, and filling the heated heatproof solid particle medium into a cavity formed by the tube blank, the lower pressure cover and the lower pressure head; closing an upper pressure cover and an upper pressure head one after another, and continuing heating to reach a technical set temperature; loading the upper and lower pressure heads and pressure covers according to set paths to enable the tube blank to be transformed, so that a designed light alloy tubular component is achieved. The solid particle medium thermal expansion forming method for the light alloy tubular component is technically simple and convenient to control, low in input cost, environment friendly and free of pollution, light alloy hollow variable-section tubular components in complex shapes can be formed at one time, and tube forming limit can be further improved.

Description

technical field [0001] The invention relates to a method for forming a light alloy tubular member. Background technique [0002] With the continuous development of science and technology and industrial production, high-tech fields such as aviation, aerospace and military industry continue to require high-performance, lightweight, high-reliability and high-efficiency functions of components. The light-weight structural features of the tubular member, such as integration, thin shell, and hollow variable section, are meeting the needs of development. At the same time, key components are often used in extremely harsh environments. Due to their low density, high strength, high hardness, heat resistance, wear resistance, and corrosion resistance, light alloy materials have become the preferred materials for key components. Light alloy materials mainly include aluminum alloys, magnesium alloys, titanium alloys and special composite materials. However, most of these materials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/00B21D37/16B21D37/10
Inventor 董国疆赵长财曹秒艳
Owner YANSHAN UNIV
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