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A method and device for forming a light alloy reducing pipe

A technology of reducing tubes and light alloys, which is applied in the forming of light alloy reducing tubes and thin-walled magnesium alloy reducing tubes. It can solve the problems of complex hydraulic equipment and large springback, and overcome internal stress, strength and hardness. The effect of reducing and disappearing internal stress

Active Publication Date: 2016-09-28
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] The object of the present invention is to provide a method and device for forming light alloy reducing pipes in order to solve the problem that the existing light alloy pipes have a large amount of rebound after forming at room temperature and require complex hydraulic equipment

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  • A method and device for forming a light alloy reducing pipe

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Embodiment Construction

[0024] The specific device and forming method for forming a magnesium alloy tube with a diameter of Φ16 mm and a wall thickness of 0.6 mm using the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] The device includes mold workpiece system, heating system and vibration system. The mold workpiece system includes pressure screw 1, compression bolt 2, spring washer 3, pressure plate 4, upper gasket 5, soft spring 6, lower gasket 7, metal tube blank 8, split mold 9, plug 10, anti Loose washer 16, liquid plastic 17, adjustment block 18, strong spring 22 and spring retaining ring 23. The heating system includes a heater 19 , mineral oil 20 and a container 21 . The vibration system includes a clamping plate 11 , a vibrator table 12 , fastening bolts 13 , spring washers 14 and nuts 15 .

[0026] The specific steps of the forming method are as follows:

[0027] (1) First, heat the mineral oil 20 in the container 2...

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Abstract

The invention discloses a method and a device for forming a light alloy reducing pipe, and belongs to the field of metal plastic molding machining. A metal pipe blank and liquid plastic in the pipe are pressurized by rotating a screw rod manually; the metal pipe blank expands according to the incompressibility of the liquid plastic till the metal pipe is attached to a die profile; the shape of the deformed metal pipe blank is consistent with a split die cavity; a split die and the metal pipe blank are put into mineral oil, and vibration is performed for a certain time period. Through heating and vibration, the elimination of the forming resistance of the metal pipe blank is facilitated, the plastic flowing and forming of a metal pipe are accelerated, and the resilience value of the reducing pipe during forming is lowered. The method and the device have the characteristics of simple equipment, convenience in operation, low elasticity recovery, high forming accuracy, and the like.

Description

Technical field: [0001] The invention belongs to the technical field of plastic processing of parts, and in particular relates to a method and a device for forming a light alloy reducing tube. The forming method and device are especially suitable for forming a thin-walled magnesium alloy reducing tube. Background technique: [0002] The reducing tube is a hollow pipe with variable cross-section. It moves the core material to the surroundings of the tube, fully exerts the effectiveness of the material, saves materials, and realizes weight reduction. Therefore, the reducing tube is widely used in the automotive industry, aerospace, etc. areas have important applications. In order to further reduce the weight, reducing tubes made of lightweight materials such as aluminum alloys and magnesium alloys have attracted more and more attention. At present, the common manufacturing methods of reducing pipes include segmental welding and hydraulic pressure expansion. Due to the presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/033
Inventor 张兴权张鑫李胜祗段士伟周煜黄志来王会廷吴晓措李明明陈鹏
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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