International aluminium panels for moving trains

International aluminium panels for moving trains

In the international, France's TGV series and Italy's ETR series of high-speed trains, early use of honeycomb sandwich structure composite materials to produce the interior wall and roof plate, followed by many European railway vehicle manufacturing enterprises using aluminum honeycomb plate manufacturing railway vehicle parts, the scope of application throughout the interior structure of the side wall plate, inside the roof plate, between the wall plate, floor, inside and outside the door of the door and luggage rack and other parts. Among them, Italy in the application of aluminium honeycomb panel relatively leading, Italy has long begun to use aluminium honeycomb panel manufacturing complex shape of the luggage rack and with curved window of the inner side wall plate and other structural parts.

In China, the earliest application of aluminium honeycomb panels was in the manufacture of the inter-package walls of Type 25A soft-sleeper buses, which was not very satisfactory due to the lack of mastery of manufacturing technology at the time. As a result, it was not used in subsequent Type 25 coaches. At the end of the 20th century, due to the high demand for lightweight vehicles in the development process of the rolling stock, aluminium honeycomb panels were first applied to the prototypes of the domestic rolling stock to manufacture the inter-pack walls, flat roof panels and door panels, with good results. Subsequently, aluminium honeycomb panels were applied on a large scale. At that time, aluminium honeycomb panels were not only used to manufacture interstitial walls, flat roof panels, undercarriage equipment cabin floor panels and various car door panels. Aluminium honeycomb panels were also used to manufacture air conditioning ducts and air conditioning unit deflectors, of which the application of ask walls, flat roof panels, air conditioning ducts and air conditioning unit deflectors had the most significant effect, which not only substantially reduced the mass of the relevant components and achieved the overall light weight of the vehicle, but also improved the manufacturing precision and quality of the components, which in turn improved the manufacturing quality of the whole vehicle. However, it is the CRH series of rolling stock that has really made a breakthrough in the application of aluminium honeycomb panels. The breakthrough mentioned here is mainly reflected in two aspects.