Multi-layer aluminum alloy composite plate for honeycomb floor and preparation method thereof

The invention discloses a multi-layer aluminum alloy composite plate for a honeycomb floor and a preparation method thereof. The multi-layer aluminum alloy composite plate is prepared by combining a coating layer, an interlayer, a core layer and an outer-layer casting plate in sequence from top to bottom and then carrying out welding, hot rolling, cold rolling and finished product air cushion furnace annealing, wherein the coating layer is made of 4xxx series aluminum alloy, the interlayer is made of 3xxx series aluminum alloy, the core layer is made of 6xxx series aluminum alloy, and the outer layer is made of 3xxx series aluminum alloy. The multi-layer aluminum alloy composite plate has the advantages of no glue, high strength, wide width, no toxicity, long service life, ability of facilitating subsequent processing and the like. 本发明公开了一种蜂窝地板用多层铝合金复合板及其制备方法，由包覆层、夹层、芯层和外层铸造板按照由上至下的顺序组合后经焊接、热轧、冷轧和成品气垫炉退火后制成；所述包覆层为4xxx系铝合金，所述夹层为3xxx系铝合金，所述芯层为6xxx系铝合金，所述外层为3xxx系铝合金；该多层铝合金复合板具有无胶、强度高、宽幅、无毒、使用寿命长、有利于后续加工等优点。