Method for forming magnesium alloy pipe fitting

A technology for magnesium alloys and pipe fittings, applied in the field of forming methods and devices for magnesium alloy pipe fittings, can solve the problems of complex pretreatment process, production of magnesium alloy pipes, affecting practicability, etc., achieve good comprehensive mechanical properties, improve material utilization, Easy-to-use effects

Inactive Publication Date: 2006-06-28
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires a complicated pretreatment process, which makes the process complicated and the cost increases, which affects its practicability
At present, there is no production of magnesium alloy tubes by superplastic composite technology.

Method used

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  • Method for forming magnesium alloy pipe fitting
  • Method for forming magnesium alloy pipe fitting

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Experimental program
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Effect test

Embodiment 1

[0024] as attached figure 1 As shown, this embodiment provides a superplastic forming process and device for magnesium alloy pipe fittings. The device is composed of a mold, a tube billet sealing mechanism, a pressure medium source and a heating mechanism. The mold is composed of an upper mold 1 and a lower mold 5. The lower end surface of the upper mold 1 and the end surface of the lower mold 5 have a mold cavity for bending the tube blank and providing bulging; the sealing mechanism is sealed on both sides of the upper and lower mold clamping parts. Plugs 3 and 4 (with air inlet holes) and hydraulic cylinders 7 and 8 are used to seal the tube blank; the pressure medium is compressed air, which is provided by a pressure conversion device composed of hydraulic cylinder (10) and cylinder (9); The heating mechanism is composed of an electric heating tube 6 placed inside the upper mold 1 and the lower mold 5 .

[0025] The forming process provided in this embodiment is as follo...

Embodiment 2

[0027] as attached figure 2 As shown, this embodiment provides a superplastic forming process and device for magnesium alloy pipe fittings. The device is composed of a mold, a tube billet sealing mechanism, a pressure medium source and a heating mechanism. The mold is composed of an upper mold 1 and a lower mold 5. The lower end surface of the upper mold 1 and the end surface of the lower mold 5 have a mold cavity for bending the tube blank and providing bulging; the sealing mechanism is sealed on both sides of the upper and lower mold clamping parts. Plugs 3, 4 and hydraulic cylinders 7, 8 are used to seal the tube blank; the pressure medium is pressure oil, which is directly taken from the oil supply system of the hydraulic machine and controlled by the reversing valve 12; the heating mechanism is composed of a low-pressure two-way pump 13, Heating oil tank 14 forms.

[0028] The forming process provided in this embodiment is as follows: put the AK60 magnesium alloy tube ...

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Abstract

A method for shaping a Mg-alloy pipe includes such steps as putting a Mg-alloy pipe blank in a mould for generating superplastic bending, and introducing a pressure medium to the inside of said pipe blank for generating superplastic expansion to form a Mg-alloy pipe. Its apparatus is composed of mould consisting upper and lower moulds, sealing unit consisting of sealing block and two hydraulic cylinders, pressure medium source, and heating unit.

Description

technical field [0001] The invention belongs to the technical field of forming magnesium alloy pipes, and mainly relates to a forming method and device for magnesium alloy pipe fittings. Background technique [0002] Magnesium alloy is one of the lightest metal structural materials currently used in practical applications. It has the advantages of high specific strength and specific stiffness, high damping and shock absorption, high thermal conductivity, high electrostatic shielding, and high machinability. It is widely used in Industries such as aviation, aerospace, automobiles, computers, communications and home appliances. However, the plasticity of magnesium alloy is poor, and it is difficult to carry out plastic processing directly, especially magnesium alloy tube products such as motorcycle handlebar tubes, because of their complex shapes, they have not yet been produced by plastic methods. For example, domestic motorcycle handlebars are basically bent from traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/033B21D37/10B21D37/16
Inventor 杨永顺陈拂晓郭俊卿杨茜李慧丽
Owner HENAN UNIV OF SCI & TECH
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