Application of Honeycomb Aluminum Plate Innovation Technology in EMU

在国外，法国的TGVseries and ItalianETRSeries of high-speed trains, early on the use of honeycomb sandwich structure composite materials to make interior wall panels and roof panels, and then many European railway vehicle manufacturers adopted.Honeycomb aluminum plate制造铁道车辆零部件，应用的范围遍及内装结构中的侧墙板、内顶板、间壁板、地板、内外车门的门板和行李架等零部件。其中，意大利在aluminum honeycomb panel的应用方面相对比较领先，意大利早就开始采用aluminum honeycomb panel制造形状复杂的行李架和带弯曲窗口的内侧墙板等结构件。

在国内，Honeycomb aluminum plate最早的应用是制造25AThe application effect of the compartment wall of the type soft sleeper bus was not very ideal due to the lack of mastery of manufacturing technology at that time. Therefore, it cannot be used in the subsequent25Continue to promote the application of the bus. In20At the end of the century, due to the high requirements for lightweight vehicles in the development process of EMU, the partition wall, flat roof panel and door panel were manufactured by using aluminum honeycomb panel on the domestic EMU prototype, and good results were achieved. Subsequently, aluminum honeycomb panels were applied on a large area. At that time, aluminum honeycomb panels were not only used to manufacture partitions, flat roof panels, underfloor equipment compartments and various door panels. The air conditioning duct and air conditioning unit deflector are also manufactured with aluminum honeycomb panels. Among them, the application effect of the wall, flat roof panel, air conditioning duct and air conditioning unit deflector is the most significant, which not only greatly reduces the quality of related parts, Realize the overall lightweight of the vehicle, and improve the manufacturing accuracy and quality of parts, thereby improving the manufacturing quality of the vehicle. However, the real breakthrough in the application of aluminum honeycomb panels is stillCRHSeries EMU. The breakthrough progress mentioned here is mainly reflected in two aspects:

(1)在CRHThe honeycomb aluminum plate is used to manufacture the inner wall panel with complex shape, very high manufacturing tolerance and appearance quality requirements on the series EMU, which breaks through the design concept of parts that aluminum honeycomb plate can only be used to manufacture plane structures or can only be bent in one direction, thus making its application range break through the application range limits of interior floor, partition wall, various vehicle interior and exterior door panels and air supply duct of air conditioning system.

(2)在CRHThe application of honeycomb aluminum sheet on the series of EMUs has not only complicated shape, but also high load-bearing and wear-resistant luggage racks, breaking through the traditional design concept that aluminum honeycomb panels cannot be applied to the manufacture of important stress components in vehicle interior structures, thus expanding its scope of application to a new field and bringing the domestic aluminum honeycomb panel application technology into a new stage.

随着近年来CRHWith the continuous deepening of the localization process of the series of EMU, the domestic has been able to use the honeycomb aluminum plate forming processing technology to manufacture parts with complex shapes, and has reached a high level in the field of aluminum honeycomb plate forming manufacturing and application. However, in order to further improve the application level of honeycomb aluminum plate and improve the rationality, maturity and reliability of design and manufacturing parts, we should further strengthen the research on the characteristics and applicability, application design methods, manufacturing technology and specific manufacturing methods and means of honeycomb aluminum plate, so as to truly master the characteristics and application design methods of aluminum honeycomb plate, so as to further expand the application scope of aluminum honeycomb plate and promote the further lightweight of railway vehicles.

Honeycomb aluminum plate dry hanging facing, for arc-shaped plate wall facing, the traditional method is steel frame base, narrow aluminum plate folding line assembly installation, aluminum plate around the corner code and steel frame lock, wide seam lock code, then fill sealant, this installation method is mostly used for outdoor, not suitable for indoor decoration, the disadvantage is that the line is not smooth, aluminum plate patchwork is too wide, not beautiful. At present, the more fashionable and popular process is to use molds to form aluminum plates, weld and form, the inner and outer arcs are perpendicular to the installation surface, close seam splicing and installation, corner codes are locked on one side, and the other side is inserted and hung in a staggered phase. The installation method can achieve the effect of straight, smooth, beautiful and generous lines, and realize the real effect of circular arc-shaped honeycomb aluminum plate forming wall.

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