A magnesium alloy composite plate continuous casting device

Abstract

The invention belongs to the technical field of magnesium alloy board continuous casting, and relates to a continuous casting device and continuous casting method of a magnesium alloy composite board. The continuous casting device of the magnesium alloy composite board comprises a crystallizer, a dummy bar head and locating rolls, and is characterized in that a first melting pool is connected with the crystallizer through a first flow tank, a through hole is formed in the center of the crystallizer, the dummy bar head capable of sliding vertically is arranged at the bottom of the through hole, and the solidified magnesium alloy board is supported in the dummy bar head; the locating rolls are symmetrically arranged below the crystallizer and on the two sides of the solidified magnesium alloy board; a second melting pool and a composite crystallizer which are connected through a second flow tank are arranged below the locating rolls, a through hole larger than the through hole in the center of the crystallizer is formed in the center of the composite crystallizer, and the difference of the sizes of the two through holes is an aluminum coating layer; the outer side wall of the crystallizer and the outer side wall of the composite crystallizer are welded together through a connecting rod. The outer layer of the magnesium board can be coated with aluminum coating layer metal easily, operation is easy, high safety and the high rate of finished products are achieved, the device and method are suitable for large-scale production, and the produced magnesium alloy composite board is good in corrosion resisting performance.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy plate continuous casting, and in particular relates to a magnesium alloy composite plate continuous casting device and a continuous casting method. Background technique [0002] Magnesium and magnesium alloys have a series of excellent properties, and are known as "the green project of the 21st century". Among them, the high-performance magnesium alloy sheet has the advantages of light weight, high strength, good rigidity, good processing performance, high dimensional stability, impact resistance, good attenuation performance, and easy recycling. It can replace plastics, steels and other materials in many aspects to meet It is a good material for manufacturing automobiles, aircraft skins and frames, and electronic and electrical product shells. At present, the research on the preparation of magnesium alloy sheet has become a hot spot in the field of material processing. [0003] However,...

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Problems solved by technology

However, the traditional plating metal is mostly electroplating, which requires high production equipment and high cost.

Lu Jiashun (Chinese Patent Publication No. CN 102284405A) and others mentioned the method of cold spraying on the surface of magnesium, but the equipment required by this method is relatively high, and the requirements for the process are also more complicated; Wang Yaying (Chinese Patent Publication No. CN101250733A ) and others invented the production process of copper plating on aluminum and magnesium. Although this process can coat a layer of copper on the surface of magnesium, the process is relatively complicated; Li Feng (Chinese Patent Publication No. CN 102031541A) et al. The production method of coated steel plate uses electroplating solution to coat zinc and magnesium on the metal surface, which wastes energy and is very important for the phase formed on the surface

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