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Type: Artigo
Title: Mql With Water In Cylindrical Plunge Grinding Of Hardened Steels Using Cbn Wheels, With And Without Wheel Cleaning By Compressed Air
Author: Ruzzi
Rodrigo de Souza; Belentani
Rafael de Mello; de Mello
Hamilton Jose; Canarim
Rubens Chinali; D'Addona
Doriana M.; Diniz
Anselmo Eduardo; de Aguiar
Paulo Roberto; Bianchi
Eduardo Carlos
Abstract: Minimum quantity of lubricant (MQL) in grinding is an alternative for reducing abundant fluid flow and both environmental and health hazards when compared with conventional fluid application. In spite of the fact that MQL is considered an innovative cost-effective and environmentally friendly technique, when used in grinding its inadequate application can increase cutting temperature and wheel clogging, worsening surface roughness, and increasing geometric and dimensional errors. The present study aims to evaluate improvements in MQL in grinding using MQL + water (1:1, 1:3, and 1:5 parts of oil per parts of water), when compared to MQL without water and conventional cooling-lubrication technique. Wheel cleaning by compressed air was also tested, aimed for unclogging of the wheel pores. The tests were performed in a plunge cylindrical grinder with CBN wheel and workpieces of AISI 4340 for different feed rates. The ground workpieces were analyzed with respect to the surface roughness, roundness errors, microhardness, and microscopic changes. In addition, tangential cutting force and diametric wheel wear were investigated. The results observed for the MQL plus water in the proportion of 1:5, with wheel cleaning system (at 30A degrees inclination angle of the air nozzle) were the best, when compared to MQL without water, and close to the conventional flood coolant, implying that this technique is a potential alternative for cooling-lubrication when applied properly.
Subject: Grinding
Cutting Fluids
Mql With Water
Wheel Cleaning
Editor: Springer London LTD
Rights: fechado
Identifier DOI: 10.1007/s00170-016-9396-4
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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