王友涛,陈阳,仇学露,郑珺予,宋金龙.航空发动机积碳/油污超低温冰粒气射流清洗工艺研究[J].表面技术,2025,54(4):165-179.
WANG Youtao,CHEN Yang,QIU Xuelu,ZHENG Junyu,SONG Jinlong.Carbon Deposit/Greasy dirt Cleaning of Aero-engine by Air Jet with Ultra-low Temperature Ice Particles[J].Surface Technology,2025,54(4):165-179 |
| 航空发动机积碳/油污超低温冰粒气射流清洗工艺研究 |
| Carbon Deposit/Greasy dirt Cleaning of Aero-engine by Air Jet with Ultra-low Temperature Ice Particles |
| 投稿时间：2024-06-25 修订日期：2024-11-11 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.04.013 |
| 中文关键词: 冰粒 气射流 积碳 油污 发动机 清洗 |
| 英文关键词:ice particles air jet carbon deposit greasy dirt engine cleaning |
| 基金项目: |
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| Author | Institution |
| WANG Youtao | Liyang Aero Power Co., Ltd., AECC, Guiyang 550014, China;School of Energy and Power Engineering,Liaoning Dalian 116024, China |
| CHEN Yang | School of Mechanical Engineering, Dalian University of Technology, Liaoning Dalian 116024, China |
| QIU Xuelu | School of Mechanical Engineering, Dalian University of Technology, Liaoning Dalian 116024, China |
| ZHENG Junyu | Liyang Aero Power Co., Ltd., AECC, Guiyang 550014, China |
| SONG Jinlong | School of Mechanical Engineering, Dalian University of Technology, Liaoning Dalian 116024, China |
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| 中文摘要: |
| 目的 利用超低温冰粒气射流清洗技术对某型号航空发动机典型零部件表面积碳/油污进行清洗，探究不同清洗工艺参数对积碳/油污清洗效果的影响。方法 采用质量评价、宏微观形貌和化学元素检测、表面粗糙度测量等方法对积碳/油污件表面清洗效果进行表征，利用单因素试验探究喷射压力、喷射角度、喷射距离、喷射时间和冰粒流量等工艺参数对表面清洗效果的影响。在最佳清洗工艺参数下，探究了超低温冰粒气射流清洗技术对金属基体材料性能的影响。结果 喷射压力、喷射角度、喷射距离、喷射时间和冰粒流量等参数都会影响表面清洗效果，最优清洗工艺参数下仅需5 s即可实现对表面积碳/油污的完全去除，清洗效率较高。通过对射流喷嘴运动的控制实现积碳/油污件表面的连续清洗，进而实现大面积积碳/油污的清洗。此外，超低温冰粒气射流清洗前后K424高温合金材料性能无明显变化，实现了无损伤清洗。结论 超低温冰粒气射流清洗技术具有较高的清洗效率且对基体无损伤，在航空发动机表面积碳/油污清洗方面具有广阔的应用前景。 |
| 英文摘要: |
| Since aero-engine is the power device of an aircraft, carbon deposit/greasy dirt on it seriously affects engine performance and needs to be cleaned in time. However, the existing cleaning technologies have the drawbacks of high pollution, low efficiency, and easy to cause damage to the substrate. Herein, it was proposed to clean the carbon deposit/greasy dirt on the surface of typical parts of aviation engines using air jet with ultra-low temperature ice particles. Firstly, the surface morphology and chemical element of the carbon deposit/greasy dirt was measured by Scanning Electron Microscope (SEM) and X-ray Energy Spectrometer (EDS). SEM images showed that there were two different microstructures distributed on the surface. One was the typical structure of carbon deposit consisting of clusters of nanoscale particles, and the other was a relatively flat greasy dirt surface that contained a small number of bumps and pits. EDS spectra indicated that C was the major element in the carbon deposit/greasy dirt at about 69.59wt.%, which was much larger than 9.25wt.% of the substrate. To explore the optimal cleaning parameters, single-factor experiments were conducted by adjusting the spraying pressure, spraying angle, spraying distance, spraying time and flow rate of ice particles. The results indicated that different parameters had different effects on the cleaning effectiveness that was characterized by the removal of carbon deposit/greasy dirt in an unit area. For example, the spraying pressure and flow rate of ice particles were conducive to the removal of carbon deposit/greasy dirt, while the spraying distance was negatively correlated with that. Then, the optimal cleaning parameters were determined at 0.8 MPa spraying pressure, 65° spraying angle, 4 cm spraying distance and 32.75 g/s flow rate of ice particles, under which the carbon deposit/greasy dirt could be removed completely in 5 s of cleaning time, showing a high cleaning efficiency. The carbon deposit/greasy dirt was removed partially and showed convoluted sheet structures after cleaning for 2 s, resulting in a peak tendency in surface roughness with increasing cleaning time. When the cleaning time was longer than 5 s, there were no obvious changes in the surface roughness, indicating that the impact force of jet was not enough to change the surface morphology of the substrate. Subsequently, through controlling the spraying gun along a defined route, a continuous cleaning process was achieved, and the sample with the size of about 50 mm×14 mm could be cleaned within only 20 s. Finally, to further investigate the influence of the air jet with ultra-low temperature ice particles on the property of the substrate material, the surface morphology, surface roughness, element content and distribution, crystal structure, metallographic organization, and mechanical property of K424 high-temperature alloy were measured. And the results indicated that there were no obvious changes in the performance of the substrate materials before and after jet impact, realizing damage-free cleaning. Overall, this air jet with ultra-low temperature ice particles cleaning technology show a high cleaning efficiency and significant application prospects in the field of carbon deposit/greasy dirt cleaning on the surface of aviation engines. |
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