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首页> 外文会议>IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies >A HIGH FLOW PIEZOELECTRIC CERAMIC CHOKE FOR AN ADAPTIVE VEHICLE GAS SPRING DAMPER MANUFACTURED BY CERAMIC INJECTION AND CERAMIC INSERT MOLDING
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A HIGH FLOW PIEZOELECTRIC CERAMIC CHOKE FOR AN ADAPTIVE VEHICLE GAS SPRING DAMPER MANUFACTURED BY CERAMIC INJECTION AND CERAMIC INSERT MOLDING

机译：用于通过陶瓷注射和陶瓷插入成型制造的自适应车辆气体弹簧阻尼器的高流量压电陶瓷扼流圈

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The current research presents recent work respective to the development of a high flow ceramic choke unit to control the air flow of an adaptive gas spring damper in a vehicle. Accordingly, the choke comprises a hybrid structure of a piezoelectric ceramic and a polymer. A small contraction of the integrated piezoelectric ceramic ring actuator is transformed by a particular polymer spoke design. At the same time, the resulting angular displacement of the chokes outer ring is increased. Multiple micro structured holes are placed in the actuator ring to adjust theair flow through the choke and, thereby, the damping characteristic of the gas spring damper system. The actuator disc is manufactured by ceramic injection molding (CIM). CIM is a low cost process for large-scale production which is distinguished by high size accuracy. In order to conjoin the polymer spokes with the ceramic actuator a new technology is developed: The ceramic insert molding. Hence, a lot of research is carried out with regard to material behaviour and most importantly the occurrence of material shrinking. In the process, shrinking is caused by debinding and sintering of the ceramic feedstock. These technical expertises are used for the final design of two required injection molding tools and forming processes. Another challenge focuses on deriving the piezoelectric properties of the final product. Due to the fact of using a mixed compound piezoelectric ceramic powder and a thermoplastic binder composite as injection molding aid, the properties of the finally polarized PZT are equivalent to other processing technologies like dry pressing, thick film, etc.Respectively, only the ceramic injection molding process and, especially, the ceramic insert molding principles allow for implementation of such a piezoelectric ceramic choke unit. It is distinguished by the required adjusting range for controlling an accurate airflow in a commercial gas spring damper.
机译：目前的研究据近期对高流量陶瓷扼流单元的开发来控制车辆中自适应气体弹簧阻尼器的空气流动的工作。因此，扼流圈包括压电陶瓷和聚合物的混合结构。集成压电陶瓷环致动器的小收缩由特定的聚合物辐条设计转换。同时，扼流圈外圈的所得到的角位移增加。多个微结构孔放置在致动器环中以通过扼流圈调节尾部流动，从而调节气体弹簧阻尼系统的阻尼特性。致动盘通过陶瓷注射成型（CIM）制造。 CIM对于大规模生产的低成本过程，以高尺寸的精度特征。为了将聚合物辐条与陶瓷执行器联合起来，开发了一种新技术：陶瓷嵌件成型。因此，关于材料行为进行了大量研究，最重要的是材料缩小的发生。在该过程中，缩小是由陶瓷原料的脱脂和烧结引起的。这些技术专业专业人士用于最终设计两种所需的注塑工具和成型过程。另一个挑战重点是导出最终产品的压电性质。由于使用混合复合压电陶瓷粉末和热塑性粘合剂复合材料作为注射成型助剂，最终偏振的PZT的性质等同于其他加工技术，如干压，厚膜等。只有陶瓷注射模塑工艺，特别是陶瓷插入件模制原理允许实现这种压电陶瓷扼流单元。通过所需的调节范围来区分，用于控制商用气体弹簧阻尼器中的精确气流。

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