振动强化对金属粉末注射成型中模腔压力的影响  

EFFECTS OF VIBRATION ENHANCING ON THE CAVITY PRESSURE OF METAL POWDER INJECTION MOLDING PROCESS

作　　者：殷小春[1] 瞿金平[1] 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心,广州510640

出　　处：《工程塑料应用》2005年第2期33-35,共3页Engineering Plastics Application

摘　　要：　　　介绍金属粉末振动辅助注射成型设备的原理、结构及其应用,利用自制的模腔压力传感器对振动力场强化金属粉末注射成型过程中模腔压力的变化历程进行实时采集。试验结果表明,振动力场可以改变熔体在模具内的流动方式;在试验研究的范围内,不同径向位置处的模腔最大压力随振动振幅、频率的增加而减小,从而可以在不影响制品性能的条件下降低注射成型中的压力,以拓宽金属粉末注射成型的适用范围。The principle, structure and application of the vibration-assisted metal powder injection molding(MIM) machine are presented. By using the self-made pressure transducers, the real-time change of cavity pressure is gathered during the vibration enhancing on the MIM. The experimental results show that the vibration field can change the flow pattern of melt in the mold. The maximum cavity pressure of different radial place decreases with the increase of vibration amplitude, frequency. The metal parts can be molded at a low injection pressure without sacrificing the parts’quality. Vibration field can widen the application of MIM.

关 键 词：注射成型设备 振动力场 金属粉末 熔体 最大压力 制品 强化 影响 改变 辅助 

分 类 号：TQ320[化学工程—合成树脂塑料工业]