Magnesium-aluminum double-layer composite barrel-shaped part and staggered-distance spin forming process thereof

A double-layer composite and staggered-pitch spinning technology is applied in the field of forming and spinning of composite cylindrical parts, which can solve the problems of difficult plastic deformation and corrosion resistance of magnesium alloys, and achieve improved plasticity and corrosion resistance, easy forming, high precision effect

Active Publication Date: 2018-07-24
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of difficult plastic deformation and corrosion resistance of magnesium alloys, the present invention proposes a magnesium-aluminum double-layer composite cylindrical part. In order to obtain a magnesium-aluminum double-layer composite cylindrical part with good interface bonding strength, a magnesium-aluminum double-layer composite cylindrical part is proposed. Staggered Spinning Process of Cylindrical Parts

Method used

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  • Magnesium-aluminum double-layer composite barrel-shaped part and staggered-distance spin forming process thereof
  • Magnesium-aluminum double-layer composite barrel-shaped part and staggered-distance spin forming process thereof
  • Magnesium-aluminum double-layer composite barrel-shaped part and staggered-distance spin forming process thereof

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Embodiment 1

[0030] This embodiment provides a staggered-pitch spinning forming process for a magnesium-aluminum double-layer composite cylindrical part, which includes grinding and cleaning the aluminum alloy outer cylinder and magnesium alloy inner cylinder obtained by machining, and then performing staggered-pitch spinning, The specific implementation process of staggered spinning is as follows:

[0031] S1, heat the aluminum alloy outer cylinder and the magnesium alloy inner cylinder to 390°C and keep it warm for 10 minutes, heat the spinning spindle 4 and the rotary wheel 6 of the three-spinning wheel spinning machine to 200±10°C;

[0032] S2, the magnesium alloy inner cylinder is sleeved on the spinning spindle 4, the aluminum alloy outer cylinder is sleeved outside the magnesium alloy inner cylinder, and the spinning is carried out by using the three-wheel staggered forward rotation method, and the rotation speed of the spinning spindle 4 is 600r / min , the feed speed of the rotary w...

Embodiment 2

[0044] This embodiment provides a magnesium-aluminum double-layer composite cylindrical part, which is made according to the staggered spinning process of the magnesium-aluminum double-layer composite cylindrical part described in Embodiment 1, including an aluminum alloy outer cylinder and an aluminum alloy outer cylinder. Magnesium alloy inner barrel inside the barrel.

[0045] The composite cylindrical part uses aluminum alloy as the outer layer material to improve the corrosion resistance of the cylindrical part while maintaining its great advantage of light weight; the overall thinning rate is 65%; there are no spinning cracks and wrinkles on the inner and outer surfaces And macroscopic defects such as peeling appear; through the observation and analysis of the microstructure of the bonding interface with a metallographic microscope and a scanning electron microscope, it is found that the two interfaces are well bonded; according to the nano-indentation curve, it can be co...

Embodiment 3

[0047] This embodiment takes AZ31 magnesium alloy plate and 2024Al aluminum alloy plate as examples to further illustrate the staggered pitch spinning process of the magnesium-aluminum double-layer composite cylindrical part described in embodiment 1 and the magnesium-aluminum double-layer described in embodiment 2. Composite barrel. The size of the AZ31 magnesium alloy plate is 300mm×300mm×25mm, and the size of the 024Al aluminum alloy plate is 300mm×300mm×30mm.

[0048] The staggered spinning forming process of magnesium-aluminum double-layer composite cylindrical parts is as follows.

[0049] (1) Machining

[0050] The machining process of aluminum alloy outer cylinder and magnesium alloy inner cylinder is: blanking - rough turning - semi-finishing turning - calibration - finishing turning, the specific implementation process is:

[0051] S1, cutting cylindrical blanks with a wire cutting machine on the magnesium alloy plate and the aluminum alloy plate;

[0052] S2, use...

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Abstract

The invention provides a magnesium-aluminum double-layer composite barrel-shaped part and a staggered-distance spin forming process thereof, and belongs to the technical field of composite barrel-shaped part forming and spin processing. The staggered-distance spin forming process comprises the following steps of: machining to obtain an aluminum alloy outer barrel and a magnesium alloy inner barrel; grinding and cleaning the aluminum alloy outer barrel and the magnesium alloy inner barrel; and performing staggered-distance spin forming on the aluminum alloy outer barrel and the aluminum alloy inner barrel. The magnesium-aluminum double-layer composite barrel-shaped part is manufactured through a staggered-distance spin forming technology, and the composite barrel-shaped part takes the aluminum alloy as an outer-layer material to improve plasticity and corrosion resistance of the barrel-shaped part; and meanwhile, the great advantage of being light of the barrel-shaped part is kept.

Description

technical field [0001] The invention relates to the technical field of forming and spinning processing of composite cylindrical parts, in particular to a magnesium-aluminum double-layer composite cylindrical part and a staggered pitch spinning forming process thereof. Background technique [0002] Magnesium alloys are known as environmentally friendly and energy-saving materials in the 21st century due to their advantages such as low density, high specific strength and specific stiffness, excellent dimensional stability, and abundant resources. In recent years, magnesium alloys have become a research hotspot for many scholars. However, since the magnesium alloy has a close-packed hexagonal crystal structure, there is only one slip plane (0001) at room temperature and there are three close-packed directions on this surface, that is, three slip systems. The small number of slip systems leads to plastic deformation of the magnesium alloy at room temperature. Difficult; in addit...

Claims

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Application Information

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IPC IPC(8): B21D22/16
Inventor 陈洪胜刘瑞峰张媛琦王文先刘润爱张宇阳
Owner TAIYUAN UNIV OF TECH
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