Investigation on Heat Transfer Performance of Rotating Heat Pipe Grinding Wheel in Dry Profile Grinding

doi:10.3901/JME.2021.03.267

Abstract

Abstract: The key issue that restricts the development of profile grinding in difficult-to machine materials is usually the thermal damage. Most studies have focused on the cooling efficiency of the coolant; however only few have investigated the heat transfer potency of the grinding wheel matrix. A new cooling method that incorporates a rotating heat pipe (RHP) in the grinding wheel has been proposed. A rotating heat pipe grinding wheel (RHP-GW) is fabricated according to the characteristic of the typical profile surface. The heat transfer performance of the RHP-GW is analyzed for different factors as rotational speed, heat flux and filling ratio by monitoring the internal temperature distribution. Comparative dry grinding of Ti-6Al-4V between a normal grinding wheel (N-GW) and the RHP-GW, a great cooling advantage of the latter one is demonstrated. The workpiece surface quality and the grinding temperature in both the RHP and along the grinding zone are monitored. The energy consumption and CO₂emission is compared by both coolant cooling and RHP cooling, results show great potency on green machining of heat pipe technology.

Key words: profile grinding, difficult to cut material, axial rotating heat pipe, enhanced heat transfer, green machining

CLC Number:

TG580

CHEN Jiajia, FU Yucan, QIAN Ning, JIANG Huafei. Investigation on Heat Transfer Performance of Rotating Heat Pipe Grinding Wheel in Dry Profile Grinding[J]. Journal of Mechanical Engineering, 2021, 57(3): 267-276.

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