Semi-continuous casting method for light alloy and dedicated apparatus for implementing the same

Abstract

The invention discloses a method of light alloy semi-continuous casting and relative special device. Wherein, said method comprises: using upright semi-continuous device to guide out the heat of metallic liquid hole with inorganic heat pipe, while the liquid hole is formed by flowing metal into crystallizer. And said special device comprises a mixer driven by motor, several heat pipes, and a cooling water tank, while the mixer has one mandrel whose upper end is through the water tank and driven by motor and lower end is connected to a mixing cylinder; said mixing cylinder is filled with alloy whose fusion point is lower; said heat pipes are mounted at the bottom of cooling water tank and inserted into said alloy. The invention can effectively improve the nucleation rate of light alloy liquid, reduce the non-uniform crystallized range, and improve the solidified organize of light alloy.

Description

Technical field [0001] The invention relates to a light alloy semi-continuous casting casting method and a special device for implementing the method. Background technique [0002] The current casting method for light alloys is to pour the smelted light alloy into a mold and cool it with water outside the mold. The solidification of the alloy starts from the outer wall from the outside to the inside, so the crystallization temperature gradient is large, and the light alloy Generally solid solution type, it is easy to cause typical uneven casting structure, especially aluminum alloys like Al-Cu series, Al-Mg series, Al-Zn-Mg series, etc., which have a wide crystallization temperature range, so casting defects are easy to occur. As a result, it is difficult to produce qualified products for lightly larger alloys and alloy ingots. Summary of the invention [0003] The purpose of the present invention is to provide a light alloy semi-continuous casting casting method capable of redu...

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Problems solved by technology

[0002] At present, the casting method of light alloy is to pour the smelted light alloy into the crystallizer and cool it with water around the crystallizer. The solidification of the alloy starts from the outer wall from the outside to the inside, so the crystallization temperature gradient is large, and the light alloy Generally solid solution type, it is easy to cause typical uneven casting structure, especially aluminum alloys such as Al-Cu series, Al-Mg series, Al-Zn-Mg series, etc., the crystallization temperature range is wide, so it is easy to produce casting defects. As a result, it is difficult to produce qualified products for slightly larger light alloys and alloy ingots

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