| 引用本文: | 王书文,廖玉红,王腾迪.激光熔覆Ni625/WC涂层的减振降噪和摩擦磨损性能∗[J].中国表面工程,2021,34(2):94~103 |
| Wang Shuwen,Liao Yuhong,Wang Tengdi.Properties of Vibration and Noise Reduction and Friction / Wear Performance of Laser Cladded Ni625 / WC Coatings[J].China Surface Engineering,2021,34(2):94~103 |
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| 摘要: |
| 为了提高汽车和高铁制动盘的耐磨性和减振降噪性能,对激光熔覆 Ni625 和 WC 复合涂层的减振降噪和摩擦磨损性能进行研究,其中粉末配比和熔覆加工工艺参数方案采用均匀分布法设计。 利用 UMT-Tribolab 摩擦磨损试验机进行摩擦磨损试验,并分析摩擦因数的稳定性;在摩擦磨损试验的同时,利用北京东方振动噪声研究所开发的数据采集分析系统,采集并分析处理振动和噪声信号;通过白光干涉仪表征熔覆层磨损形貌及磨损量;在对摩擦磨损和振动噪声试验结果分析的基础上, 建立模糊综合评价模型,并确定出最优激光熔覆工艺参数为:激光功率 2 kW、进给速度 600 mm/ min、送粉盘转速 4. 5 r/ min、保护气体流量 15. 1 L/ min、送粉气体流量 5. 4 L/ min、WC 的质量占比 10%。 研究成果对汽车和高铁铸铁制动盘的表面改性具有重要意义。 |
| 关键词: 激光熔覆 摩擦磨损 振动噪声 均匀分布法 表面改性 |
| DOI：10.11933/j.issn.1007-9289.20200302001 |
| 分类号:U463 |
| 基金项目:上海市科委重点支撑(18060502400)和国家自然科学基金(51275126)资助项目 |
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| Properties of Vibration and Noise Reduction and Friction / Wear Performance of Laser Cladded Ni625 / WC Coatings |
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Wang Shuwen, Liao Yuhong, Wang Tengdi
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College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093 , China
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| Abstract: |
| In order to improve the wear resistance and vibration and noise reduction performance of automobile and high-speed railway brake discs, the vibration and noise reduction and friction and wear properties of laser cladding Ni625 and WC composite coatings were studied. The powder ratio and laser clading parameters were designed by using the uniform distribution method. Friction and wear tests were performed by means of a UMT-Tribolab friction and wear tester. During the tests, the data acquisition and signal processing sys- tem developed by Beijing Oriental Institute of Vibration and Noise was employed to collect and analyze the measured vibration and noise signals. After the experiments, the variation of the coefficients of friction was analyzed, and the tested surfaces were characterized by a white light interferometer. Based on the analysis of the experimental results of friction, wear, and vibration and noise, a fuzzy compre- hensive evaluation model was developed, and the optimal laser cladding process parameters were determined as follows: laser power 2 kW, feed speed 600 mm/ min, powder feeder speed 4. 5 r/ min, shielding gas flow 15. 1 L/ min, powder feeding gas flow 5. 4 L/ min, and WC mass ratio of 10%. This study is of great significance to the surface modification of automobile and high-speed train cast iron brake discs. |
| Key words: laser cladding friction and wear vibration and noise uniform distribution method surface modifiction |
