Preparation method for aluminum alloy continuous casting ingot with low surface segregation layer thickness

The invention discloses a preparation method for an aluminum alloy continuous casting ingot with a low surface segregation layer thickness, and belongs to the field of aluminum alloy preparation and processing. The preparation method specifically comprises the following steps of: injecting electrolytic aluminum liquid into an aluminum alloy melting furnace, adjusting the melt temperature and adding other alloying elements; electromagnetically stirring alloy melt, purifying the melt, analyzing the components of a sample, after the components are qualified, adding Al-Ti-B(C) intermediate alloy for refining, on-line purifying, continuous casting of oil and gas lubrication, sawing, quality inspection, etc. The method provided by the invention is beneficial to reduce the thickness of the segregation layer on the surface of the ingot and improve the surface quality of the ingot, and the method has a good industrial application prospect. 本发明公开了一种低表面偏析层厚度铝合金连铸锭的制备方法，属于铝合金制备加工领域。该制备方法具体包括以下步骤：将电解铝液注入铝合金熔炼炉、调节熔体温度并加入其他