The Process For Clad Metal Of Al-Si And Al-Mg Under Direct Electromagnetic Field

Clad material, which is a new type material, has become one of research focus in material field because of its good performance. Aluminum and its alloy is applied abroad in architecture, packaging, traffic, avigation and petroleum field for that the aluminum which is light metal has high performance of corrosion-resistance, plasticity and its surface can be treated easily. Magnesium is lighter than aluminum that has best specific strength, nice machining and shielding properties of electromagnetic interference. But magnesium is oxidizable and high cost. In order to make the best of the excellent nature of aluminum and magnesium, ZL102 alloy and ZL301 alloy is selected in this paper to found clad material of aluminum-silicon and aluminum-magnesium.With the development of technology in electromagnetic processing and the expander of electromagnetic application, the technology of EMBR (electromagnetic brake) has become sophisticated. In this paper, the EMBR technique is applied in producing the clad material.In order to analyze the feasibility and choose reasonable technological parameters, the program of ANSYS is used to simulate the molten metal flow in the mould affected by electromagnetic field. The two kinds of alloys can't mix together when magnetic flux density is 0.15T. The apparatus for continuous casting is designed and advanced to fit for the aluminum alloy, which mainly include the crystal, irrigate and tundish and so on. The perfect result is finally obtained by adjust the experimental apparatus and the technical parametersThe slabs including the ones are obtained with electromagnetic filed and the ones are obtained without electromagnetic field are analyzed by means of the XRD, EPSM and SEM. The results show that there are same compositions on two sides of the slab obtained without electromagnetic field, and another results show there are different compositions on two sides of the slab obtained by magnetic flux density of 0.5T. One conclusion is made out that the electromagnetic field restrains the flow of the melt effectively and on the different sides of the slab there are different elements, no obvious interface was found in the slab.