论文部分内容阅读
通过采用具有高频响应性能的压电传感器和高采样频率的数字记忆存储示波器,捕获冲击紧实过程中各种瞬态信号,绘制出空气冲击造型过程的动态曲线。并以此为手段,对紧实过程和紧实机构进行了系统的试验与研究。在接近于生产条件下的试验基础上,获得了冲击动态曲线,砂型紧实效果、紧实机构参数之间的定性和定量关系,为空气冲击紧实机构的优化设计提供了依据。冲击阀是空气冲击紧实机构的核心,提高冲击阀性能的主要途径是提高其阻流面积增长速率,并相应加大最大阻流面积。
By using piezoelectric sensors with high frequency response and digital memory storage oscilloscopes with high sampling frequency, various transient signals during impact compacting are captured and the dynamic curve of the air impact modeling process is drawn. And as a means to carry out a systematic test and study of the compaction process and compaction. On the basis of the test which is close to the production conditions, the qualitative and quantitative relationship between the impact dynamic curve, the sand compacting effect and the compacting mechanism parameters is obtained, which provides the basis for the optimization design of the air impact compacting mechanism. Impact valve is the core of the air impact compaction mechanism, the main way to improve the performance of the impact valve is to increase the rate of growth of the flow area, and the corresponding increase the maximum flow area.