Connection of aluminum honeycomb panel honeycomb core and panel

aluminum honeycomb panel蜂窝芯和面板的连接方法也有胶结和焊接2species. The gluing method is to heat and pressurize the panel and core with hot curing glue in a continuous forming machine and then compound them. With this method of connection, the honeycomb panels are not subjected to external heating cycles, but surface pretreatment is required before connection. In addition, the strength, service life and allowable working environment of the adhesive honeycomb panel are largely affected by the performance of the adhesive.

例如：由于高空辐照强和温度低，航天领域所用蜂窝夹层结构中的有机胶粘剂很容易发生分子断链和冷脆，进而使Honeycomb Panel的平直拉伸强度下降约50%. Therefore, this method is less used today in the increasingly high demand for cellular performance.

焊接法又分为钎焊、缝焊、激光焊接和瞬间液相连接。由于缝焊的过程比较复杂，而且由于缝焊过程中焊轮在每一焊点上停留时间短，所以焊件表面的散热条件差，很容易发生过热，从而影响所制备Honeycomb Panel的整体力学性能;While transient liquid phase diffusion bonding is mostly used in multi-alloy systems;The investment cost of laser welding equipment is large, so the brazing method is currently the most widely used.

The assembly and clamping method before brazing of honeycomb plates is to assemble the honeycomb core one by one with an assembly fixture, then clamp the honeycomb core with the upper and lower panels, and finally clamp the whole metal honeycomb plate with a flat thin steel plate using a five-point clamping method.

In general, whether it is the connection of the honeycomb core of the aluminum honeycomb panel or the connection of the honeycomb core and the panel, the welding method is used to connect it, which can form a strong metallurgical bond between the joints, and its overall mechanical properties are much better than the cemented honeycomb sandwich panels. Therefore, in order to obtain high-performance metal honeycomb sandwich panels, brazing has broad prospects for development.

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