Optics and Precision Engineering, Volume. 24, Issue 4, 788(2016)

Formation of surface micro-pore texture by grinding and polishing

ZHENG Jin-hua1...2,*, WU Shuang1, WEI Xin-xu1, WANG Jun-jie1 and XU Lu1 |Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
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    As surface texturing technology can significantly improve the friction and wear properties of mechanical components and can extend its lifespan, this paper proposes a technology to rapidly form micro-pores on the metal surface by grinding and polishing method. This technology is characterized by carrying molding process and polishing process simultaneously. By choosing a load of 0.0232 MPa, slurry concentration of 9%, polishing rate of 2.09m/s and an abrasive grain diameter of 0.5μm as the investigation conditions, the formation mechanism of micro-pores on the metal surface is researched. It confirms that the surface micro-pores are formed by the vortex flow motion of the abrasive particles in surface micro defects and the rotation of work component allowing the abrasive particles to grind the wall of defects in turn in the direction of 360°. Moreover, the rounding of micro-pore formed by this technology is arc transition without projections and glitch, which does not require further polishing. By the proposed technology, secondary pores can be formed to extend the specific surface area of the work component under certain texturing condition. In addition, a large amount of micron and sub-micron pores are formed on the surfaces of work components by selecting proper grinding time and texturing condition, which provides a new direction for decreasing the internal film stress and improving interface bonding strength of Diamond-like Carbon (DLC). This study indicates that the micro-pore texturing technology on grinding and polishing shows the characteristics of simple device, high efficiency as well as large area and multi-material textures adapted.

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    ZHENG Jin-hua, WU Shuang, WEI Xin-xu, WANG Jun-jie, XU Lu. Formation of surface micro-pore texture by grinding and polishing[J]. Optics and Precision Engineering, 2016, 24(4): 788

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    Paper Information

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    Received: Nov. 10, 2015

    Accepted: --

    Published Online: Jun. 6, 2016

    The Author Email: Jin-hua ZHENG (zhengjh2005@aliyun.com)

    DOI:10.3788/ope.20162404.0788

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