摘要：【中文】本发明公开了一种压铸铝合金化学抛光方法，包括以下步骤，步骤一、去油：将除油剂制备成10‑12％的水溶液，在超声波设备中加热至80‑90度与压铸铝合金混合处理10‑30min；步骤二、碱腐蚀：将溶液为10％的NaOH加热至50‑70度与去油后的压铸铝合金在超声波设备内混合处理1‑3min；步骤三、抛光：步骤四、去灰：制备含有氟化物的酸性溶液，在温室中将抛光后的压铸铝合金投入含有氟化物的酸性溶液内处理1‑3s后清洗并利于干燥设备烘干；步骤五、氧化处理。本发明制备的抛光液能够快速去除铝合金表面气孔、裂纹、夹杂、局部凹陷或流痕等，工艺较为简单，设备投资少，生产成本较低，处理后的工件表面色泽较为美观，而且提高了压铸铝合金的耐蚀性，可以满足日后的使用需求。 【EN】The invention discloses a chemical polishing method for die-casting aluminum alloy, which comprises the following steps of: preparing the degreasing agent into 10-12% aqueous solution, heating to 80-90 ℃ in ultrasonic equipment, and mixing with die-casting aluminum alloy for 10-30 min; step two, alkali corrosion: heating 10% NaOH solution to 50-70 deg.C, and mixing with deoiled aluminum die-casting alloy in ultrasonic equipment for 1-3 min; step three, polishing: step four, deashing: preparing an acid solution containing fluoride, putting the polished die-casting aluminum alloy into the acid solution containing fluoride in a greenhouse, treating for 1-3s, cleaning and drying by using drying equipment; and step five, oxidation treatment. The polishing solution prepared by the invention can quickly remove air holes, cracks, impurities, local depressions or flow marks and the like on the surface of the aluminum alloy, has the advantages of simple process, less equipment investment and lower production cost, and the surface of a processed workpiece has beautiful color, improves the corrosion resistance of the die-casting aluminum alloy, and can meet the use requirements in the future.