超声波辅助超临界CO_2清洗精密零部件设备设计

Design of Precision Parts Cleaning Equipment Using Supercritical Carbon Dioxide Assisted with Ultrasound

传统的清洗方法及设备由于水溶液的表面张力大,很难有效清洗精密零部件的微孔及狭缝中的污物,且干燥过程复杂,以超声波辅助超临界CO2清洗可以克服上述缺点。超临界CO2具有表面张力小、快速移动能力,高溶解性、强扩散性、不添加化学试剂、循环利用的特性,在精密零部件的微孔及狭缝清洗中有良好的应用前景。提出了一种超声波辅助超临界CO2清洗精密零部件设备,包括筒体、内夹套、超声波换能器、料框、磁力驱动装置、封头、快开结构,该设备可同时实现超临界CO2、超声波振荡及零部件旋转清洗,为精密零部件的无水精密清洗提供了可能。

Conventional cleaning technology and equipments could hardly satisfy effective cleaning of slit micropores from the precision parts because of high surface tension of the water solution, and the process of drying is complex, but ultrasound- assisted cleaning technology with supercritical carbon dioxide （SC CO2） would solve these problems. SC CO2 have characteristics of low surface tension, fast moving, high dissolubility, strong diffusivity, no chemical additives and recyclable use. The precision parts would widely use this cleaning technology. In the article a ultrasound-assisted cleaning equipment of precision parts with SC CO2 is proposed, including the cylinder, the internal jacket, the ultrasound transducer, the material framework, the magnetic drive equipment, the head and the catch hoop, and the equipment could use the cleanout of SC CO2, ultrasonic oscillation and rotating the cleaning parts together, it is possible to achieve waterless cleaning of precision parts.