The Optimization of Assembled Turntable Working Teeth Cathode Profile with Riblet Surface

doi:10.3969/j.issn.1000-1093.2015.08.019

Abstract

Abstract: The relation between shape parameter and drag reduction of the riblet surface is discussed to optimize the teeth profile of assembled turntable working teeth cathode (TWTC). According to the linear distributing law to which the flow velocity in viscous sublayer of turbulence boundary layer submits, the characteristic parameters of flow field are calculated by the formula of flow velocity in viscous sublayer, and then a scheme of using the riblet surface and transition fillets for working-teeth is investigated. The flow field in the machining gap of the un-optimized TWTC with riblet surface and transition fillets is verified by simulation and experiments. The results show that the assembled TWTC with riblet surface greatly reduces the resistance of electrolyte flow channel and increases the maximum flow velocity of electrolyte in the machining gap from 42.5 m/s to 58.6 m/s. Meanwhile, it boosts anodic dissolution rate as well as material removal rate of electrochemical machining. The cavitations, eddy flow, separation and bubble can be decreased and even avoided using the transition fillets between working teeth, which realize the stable machining of internal spiral line in the uniformed gap and improve the machining accuracy and surface quality of electrochemical machining.

Key words: ordnance science and technology, riblet surface, electrochemical machining, cathode, flow field

CLC Number:

TG662

JIA Jian-li, LIU Jin-he, SHEN Jian-qiang. The Optimization of Assembled Turntable Working Teeth Cathode Profile with Riblet Surface[J]. Acta Armamentarii, 2015, 36(8): 1508-1517.

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