Research on Milled Surface Roughness of DD5 Single Crystal Superalloy Based on Water-Based MQL Method

doi:10.12068/j.issn.1005-3026.2018.09.016

Abstract

Abstract: In order to explore the relative problems of milled surface roughness of DD5 single crystal Ni-based superalloy， based on the response surface method(RSM)and water-based minimum quantity lubrication(MQL)technique， a series of milling experiments on(001)crystal plane along ［110］ crystal direction with the four flute whole end mill were conducted. The main spindle linear speed， tool feed per tooth， cutting fluid flow rate， air pressure and the flow rate ratio of water and oil were selected as the variables， while the surface roughness R_○a was chosen as the evaluation indicator. Based on the range and variance analysis， the milling and cooling parameters that significantly affect the surface quality were found out and the interactive effects were deeply studied. Moreover， the surface roughness was predicted and optimized with stepwise regression and particle swarm optimization(PSO)method， respectively. The results were verified based on the uniform design method.

Key words: DD5, surface quality, RSM(response surface method), interactive effect, stepwise regression, particle swarm optimization(PSO)

CLC Number:

TH161

LI Qiang， GONG Ya-dong， LIANG Cai-xia， LIU Ming-jun. Research on Milled Surface Roughness of DD5 Single Crystal Superalloy Based on Water-Based MQL Method[J]. Journal of Northeastern University Natural Science, 2018, 39(9): 1293-1298.

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