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Investigation of the flow field for a double-outlet nozzle during minimum quantity lubrication grinding

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Abstract

Efficient application of minimum quantity lubrication (MQL) in grinding is not only related to grinding conditions and delivery parameters but also affected by spraying atomization characteristics. In this study, a double-outlet nozzle is proposed and the flow field of the MQL grinding is investigated by two-stage atomization model. The side-mixing structure of double-outlet nozzle indicates that the grinding fluid is atomized at the windward side and the flow rate of grinding fluid for a single radial hole is smaller than that for the liquid pipe. Therefore, more excellent atomization performances, in terms of liquid droplet size, uniformity, and velocity of the liquid droplets, are obtained for double-outlet nozzle in comparison with single-outlet nozzle. The liquid droplets sprayed from auxiliary outlet of double-outlet nozzle impact on the grinding wheel and change the airflow direction around the grinding wheel. Thus, the air barrier around the grinding wheel is disturbed and the liquid droplets sprayed from main outlet can be injected into the grinding zone easily. Experimental results indicate that two-stage atomization model is reliable.

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Authors and Affiliations

  1. College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, 410114, China

    Cong Mao, Xin Zhou, Lairong Yin, Mingjun Zhang, Kun Tang & Jian Zhang

  2. Hunan Provincial Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Changsha, 410114, China

    Cong Mao, Xin Zhou, Lairong Yin, Mingjun Zhang, Kun Tang & Jian Zhang

Authors
  1. Cong Mao
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  2. Xin Zhou
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  3. Lairong Yin
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  4. Mingjun Zhang
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  5. Kun Tang
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  6. Jian Zhang
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Correspondence to Lairong Yin.

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Mao, C., Zhou, X., Yin, L. et al. Investigation of the flow field for a double-outlet nozzle during minimum quantity lubrication grinding. Int J Adv Manuf Technol 85, 291–298 (2016). https://doi.org/10.1007/s00170-015-7896-2

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  • DOI: https://doi.org/10.1007/s00170-015-7896-2

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