文章摘要
卢斌斌,卢义刚.超声强化超临界二氧化碳除锈除油污[J].声学技术,2020,39(3):306~310
超声强化超临界二氧化碳除锈除油污
Ultrasound enhanced supercritical carbon dioxide rust removal and oil removal
投稿时间:2019-06-09  修订日期:2019-07-19
DOI:10.16300/j.cnki.1000-3630.2020.03.009
中文关键词: 超声波  超临界  二氧化碳  清洗  除锈
英文关键词: ultrasonic  supercritical  carbon dioxide  cleaning  rust removal
基金项目:国家自然科学基金(11574089)资助项目。
作者单位E-mail
卢斌斌 华南理工大学物理与光电学院, 广东广州 510640 735581904@qq.com 
卢义刚 华南理工大学物理与光电学院, 广东广州 510640  
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中文摘要:
      结合超声清洗的优势与超临界二氧化碳的特性,设计出超声强化超临界二氧化碳复合清洗实验平台,超声换能器最大发射声功率为1 200 W,换能器每工作10 s停止20 s,即一个工作周期为30 s。利用实验平台开展了CD03钢片表面除锈实验,使用ZEISS Merlin高分辨率热场发射扫描电镜对CD03钢片表面进行扫描电子显微镜(Scanning Electronic Microscopy,SEM)和能谱(Energy Dispersive Spectrometer,EDS)分析,实验结果表明,随着清洗时间的延长,铁锈在超声作用下逐渐剥落,超声作用适当的工作周期数后,清洗效果达到最佳,超声作用时间太长会造成对钢片基体的损伤。利用实验平台开展了碳钢片表面油污清除实验,使用徕卡光学显微镜对清洗后的碳钢片做表面形貌观察,利用JA2003电子天平等手段对清洗效果进行了计算分析,同样,超声强化超临界二氧化碳油污清洗也存在一个最佳清洗时间。但是,不同污染所需的最佳清洗时间不同,甚至可以相差很大。在实际的清洗中要先根据污染物的类别确定最佳清洗时间,然后进行清洗。
英文摘要:
      Combining the advantages of ultrasonic cleaning and properties of supercritical carbon dioxide, an experimental platform of ultrasound enhanced supercritical CO2 composite cleaning is designed. The maximum acoustic power of ultrasonic transducer is 1200 W, and in a working cycle of 30 s the transducer works for 10 s and keeps silent for 20 s. The descaling experiment of CD03 steel sheet is carried out on the experimental platform. SEM and EDS analysis are performed on the surface of CD03 steel sheet by using ZEISS Merlin high resolution thermal field emission scanning electron microscopy. The experimental results show that with the prolongation of cleaning time, the rust gradually peels under the action of ultrasound. After the appropriate number of working cycles of ultrasonic action, the cleaning effect reaches the best. If the ultrasonic action time is too long, the substrate will be damaged. The oil removal experiment for the surface of carbon steel sheet is also carried out on the experimental platform. Leica optical microscope is used to observe the surface of the cleaned carbon steel sheet. The cleaning effect is calculated and analyzed by JA2003 electronic scales method. In the same way, there is an optimal cleaning time for ultrasonic-supercritical carbon dioxide oil cleaning. However, the optimal cleaning time for different pollution is different or even varies greatly. In actual cleaning, the optimal cleaning time should be determined according to the type of pollutant and then cleaned.
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