Surface Finish Evaluation of AISI P100 Steel after Grinding with MQL Technique with Different Flow Rates  

作　　者：Bruno Souza Abrão Mayara Fernanda Pereira Cleudes Guimarães Lurian Souza Vieira da Silva Rodrigo deSouza Ruzzi Rosemar Batista da Silva Eduardo Carlos Bianchi Alisson Rocha Machado 

机构地区：[1]School of Mechanical,Federal University of Uberlandia,Uberlandia/MG,CEP 38.408-208,Brazil [2]School of Engineering,São Paulo State University,Bauru/SP,CEP 17.033-360,Brazil [3]Mechanical Engineering Graduate Program,Pontifícia Universidade Católica do Paraná(PUC-PR),R.Imaculada Conceição,1155,Bairro Prado Velho,CEP 80215-901,Curitiba/PR,Brazil

出　　处：《Journal of Mechanics Engineering and Automation》2020年第2期60-65,共6页机械工程与自动化（英文版）

基　　金：This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil(CAPES)—Finance Code 001;The authors are grateful too to the FAPEMIG and the Post Graduate Program of Mechanical Engineering of UFU for financial support.Authors are also grateful to Villares Metals(Brazil);Saint Gobain Abrasives for supporting this work with workpiece material and wheel.One of authors thanks CNPq(PQ 2013 Project No.308067/2013)for the research scholarship and FAPEMIG project process No.PPM-00265-13 for financial support;The authors are also thankful to ABCM for transferring the copyright of the article.

摘　　要：Grinding operation is a finishing process often employed when high precision and narrow geometric tolerances are required.These requirements can be achieved only if cutting conditions are properly selected,especially the cooling-lubrication technique.In general,grinding is performed in presence of cutting fluid,however,due to the environmental impacts and costs of the conventional coolant delivery technique(flow rates from 4 L/min to 300 L/min),alternative cooling-lubrication techniques have been developed on restriction of the coolants use.Among the several techniques,MQL(minimum quantity of lubricant)technique has received special attention from machining users because of its advantages in terms of surface quality of workpiece and drastic reduction in use of coolant.In this context,this paper evaluated the performance of the MQL technique as compared to the flood coolant in peripheral surface grinding of AISI P100(VP100)steel with conventional aluminum oxide grinding wheel in relation to the surface roughness(Ra and Rz).Input parameters tested were equivalent chip thickness(0.09μm,0.18μm and 0.27μm)and flow rate of the cutting fluid(60 mL/h,150 mL/h and 240 mL/h)of the MQL system.Results showed that the grinding with MQL technique provided lower surface roughness values compared to conventional flood cooling,especially when machining under the intermediary cutting conditions.Also,with exception of heq of 0.09 m,the MQL technique resulted in lower values of Rz parameter as compared to the conventional coolant technique,regardless of the flow rate tested.

关 键 词：GRINDING AISI P100 steel MQL technique equivalent chip thickness surface roughness 

分 类 号：TG5[金属学及工艺—金属切削加工及机床]