冯勇兵,毛水强,陈益坪,程辉阳,林俊岑,俞敏波.激光清洗纯铝设备线夹工艺及其对电导率的影响[J].表面技术,2022,51(9):387-394.
FENG Yong-bing,MAO Shui-qiang,CHEN Yi-ping,CHENG Hui-yang,LIN Jun-cen,YU Min-bo.Laser Cleaning Process of Wire Clamp of Pure Aluminum and Its Effect on Electrical Conductivity[J].Surface Technology,2022,51(9):387-394 |
| 激光清洗纯铝设备线夹工艺及其对电导率的影响 |
| Laser Cleaning Process of Wire Clamp of Pure Aluminum and Its Effect on Electrical Conductivity |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.09.041 |
| 中文关键词: 激光干式清洗法 设备线夹 表面形貌 元素质量分数 电导率 |
| 英文关键词:laser dry cleaning wire clamp surface morphology, mass percentage of elements conductivity |
| 基金项目: |
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| Author | Institution |
| FENG Yong-bing | Jinhua Power Transmission Engineering Co., Ltd., Zhejiang Jinhua 321016, China |
| MAO Shui-qiang | Jinhua Power Transmission Engineering Co., Ltd., Zhejiang Jinhua 321016, China |
| CHEN Yi-ping | Jinhua Power Transmission Engineering Co., Ltd., Zhejiang Jinhua 321016, China |
| CHENG Hui-yang | Jinhua Power Transmission Engineering Co., Ltd., Zhejiang Jinhua 321016, China |
| LIN Jun-cen | Jinhua Power Transmission Engineering Co., Ltd., Zhejiang Jinhua 321016, China |
| YU Min-bo | Hangzhou Yingmin Technology Co., Ltd., Hangzhou 310000, China |
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| 中文摘要: |
| 目的 采用激光干式清洗法对模拟纯铝设备线夹的氧化污染表面进行清洗。方法 采用纳秒脉冲激光清洗纯铝板的氧化污染表面。在扫描电镜(SEM)下观察激光清洗前后表面，并采用X射线能谱分析(EDS)测试并分析其元素质量分数。利用电导率测量仪(SIGMATEST 2.069)检测其表面电导率。采用超景深三维显微镜观察激光清洗前后铝板表面形貌，研究激光清洗对其表面形貌、元素含量及电导率的影响规律，从而确定最佳的激光清洗工艺参数。结果 激光干式清洗可有效去除氧化污染表面的O元素和Cl元素，清洗后表面Al、O、Cl元素的质量分数分别达94.02%、5.95%和0.03%，Al元素质量分数较氧化污染表面的37.36%最高提升了151.66%，O和Cl元素则较未清洗表面的59.55%和3.09%最多分别降低了90.01%和99.03%。清洗后的表面电导率可达34.88 MS/m，较氧化污染铝板表面的32.00 MS/m提升9%。最终确定最佳激光清洗工艺为:激光功率120 W，重复频率60 kHz，扫描速度2 875 mm/s，填充线间距0.058 mm，扫描次数3次。结论 激光干式清洗可有效去除铝板氧化污染表面的杂质元素，使得铝元素质量分数大幅提高，并因此提高铝板表面的电导率。 |
| 英文摘要: |
| Laser dry cleaning method was used to clean the oxidized surface of assumed pure aluminum wire clamp. Nanosecond pulsed laser was used to clean the oxidized surface of pure aluminum plate, the surface morphology before and after laser dry cleaning was observed under Scanning Electron Microscope (SEM), and the mass percentages of elements were tested and then analyzed by X-ray Energy Dispersive Spectrometer (EDS). Then the surface conductivity was measured by conductivity tester (SIGMATEST 2.069). The surface morphology of aluminum plate before and after laser dry cleaning was observed by ultra depth of field three-dimensional microscope. The influence of laser dry cleaning on the surface morphology, element content and conductivity was studied, and the best laser dry cleaning process parameters were determined. Results show that O and Cl elements on the oxidized surface could be effectively removed by laser dry cleaning. After cleaning, the mass percentages of Al, O, and Cl on the surface could reach 94.02%, 5.95% and 0.03% respectively. The mass percentage of Al increased at most 151.66% compared with the 37.36% of the oxidized surface, while the O and Cl elements decreased at most 90.01% and 99.03% respectively compared with the 59.55% and 3.09% of the surface without cleaning. The surface conductivity after cleaning could reach 34.88 MS/m, 9% higher than 32.00 MS/m of the oxidized aluminum plate surface. When the laser energy density is too low, it is not enough to vaporize the oxide on the surface of aluminum plate; When the laser energy density is too high, the oxide on the surface of aluminum plate vaporizes, but at the same time, it also leads to a higher heat input, and due to the active chemical properties of aluminum, the surface of aluminum plate would be oxidized again. Finally, the optimal laser dry cleaning process parameters was determined as follows:laser power 120 W, repetition rate 60 kHz, scanning speed 2 875 mm/s, hatching space 0.058 mm, scanning times 3 times. Laser dry cleaning can effectively remove the impurity elements on the surface of oxidized aluminum plate, which greatly increases the mass percentage of aluminum element, and therefore improves the surface conductivity of aluminum plate. |
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