Forming and composite preparation method and device of a clad magnesium alloy multilayer structure

Abstract

The invention discloses a method and device for forming and compounding a clad magnesium alloy multilayer structural part. The steps are as follows: performing surface treatment on magnesium alloy and other alloy plates, stacking them alternately, and putting them between a die and a barrel , and apply blankholder force to the barrel; fill the barrel with an appropriate amount of solid particles as the pressure transmission medium; the press drives the pressure head to apply a certain pressure on the solid particle medium, and heats the mold and the blank to a certain temperature; the multi-layer board Forming under the action of pressure transmission of solid particle medium; heat preservation and pressure holding for a certain period of time to realize diffusion connection between multi-layer boards, open the mold, and obtain other metal-clad magnesium alloy multi-layer structural parts. Compared with the traditional method of preparing multi-layer composite boards first and then forming the composite boards, this invention saves the preparation process of composite boards and can avoid problems such as cracking between layers of composite boards, thereby significantly improving the quality and production of multi-layer structural parts efficiency and greatly reduce production costs.

Description

technical field [0001] The invention discloses a method and device for forming and compounding a clad magnesium alloy multilayer structural part, belonging to the technical field of composite plate forming. Background technique [0002] The poor corrosion resistance of magnesium and magnesium alloys is one of the main factors limiting their wide application. In order to improve its corrosion resistance, it can be modified on the surface. Commonly used methods include chemical conversion coating, anodic oxidation, vapor deposition, laser cladding, thermal spraying, etc. However, these methods require special equipment, and the process is complicated and the production cost is relatively high. In contrast, other metals such as aluminum and aluminum alloys usually have better corrosion resistance and plastic formability, and the surface is repairable and modifiable. Therefore, coating a layer of other alloys with good corrosion resistance on the surface of magnesium alloy pro...

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Problems solved by technology

These three methods can successfully produce other metal-clad magnesium alloy composite panels, but hard and brittle intermetallic compounds will be formed at the interface, which will reduce the formability of the composite panel during subsequent processing and easily cause interlayer cracking.

Therefore, the process of preparing the composite plate first and then forming the parts is not only complicated, but also has large energy consumption, low production efficiency, high production cost, and the layer interface of the formed multi-layer structure is severely cracked, and the quality of the parts is not high.

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