Cargando…

CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions

Edge finishing is a shaping process that is extremely important in the granite and marble processing industries. It does not only shape the edge but also makes it shiny and durable. However, this process generates dust (fine and ultrafine particles) that can have a significant impact on air quality...

Descripción completa

Detalles Bibliográficos
Autores principales: Bahri, Haithem, Songmene, Victor, Kouam, Jules, Samuel, Agnes Marie, Samuel, Fawzy Hosny
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585234/
https://www.ncbi.nlm.nih.gov/pubmed/34772022
http://dx.doi.org/10.3390/ma14216496
_version_ 1784597641667018752
author Bahri, Haithem
Songmene, Victor
Kouam, Jules
Samuel, Agnes Marie
Samuel, Fawzy Hosny
author_facet Bahri, Haithem
Songmene, Victor
Kouam, Jules
Samuel, Agnes Marie
Samuel, Fawzy Hosny
author_sort Bahri, Haithem
collection PubMed
description Edge finishing is a shaping process that is extremely important in the granite and marble processing industries. It does not only shape the edge but also makes it shiny and durable. However, this process generates dust (fine and ultrafine particles) that can have a significant impact on air quality in the workshop and can put workers’ health at risk. While environmental requirements and occupational health and safety regulations are becoming increasingly stringent, at the same time, industries must continue to produce quality parts at competitive prices. The purpose of this study was to examine the surface quality, the cutting forces, and the emission of fine (FP) and ultrafine (UFP) particles during wet and dry edge finishing of granite edges as a function of the machining parameters and abrasive grit sizes. Three machining operations were investigated: roughing, semi-finishing, and finishing, using diamond abrasives (with grit sizes 45, 150, 300, 600, 1500, and 3000). The experiments were carried out on two granites, one being black and the other white. The tested spindle speeds ranged from 1500 rpm to 3500 rpm and the feed rates from 500–1500 mm/min. It was found that roughing operations produce more fine particles while finishing operations produce more ultrafine particles. These particle emissions, as well as the part quality and the cutting forces are strongly dependent on cutting speed and on the grit size of the abrasive used.
format Online
Article
Text
id pubmed-8585234
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-85852342021-11-12 CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions Bahri, Haithem Songmene, Victor Kouam, Jules Samuel, Agnes Marie Samuel, Fawzy Hosny Materials (Basel) Article Edge finishing is a shaping process that is extremely important in the granite and marble processing industries. It does not only shape the edge but also makes it shiny and durable. However, this process generates dust (fine and ultrafine particles) that can have a significant impact on air quality in the workshop and can put workers’ health at risk. While environmental requirements and occupational health and safety regulations are becoming increasingly stringent, at the same time, industries must continue to produce quality parts at competitive prices. The purpose of this study was to examine the surface quality, the cutting forces, and the emission of fine (FP) and ultrafine (UFP) particles during wet and dry edge finishing of granite edges as a function of the machining parameters and abrasive grit sizes. Three machining operations were investigated: roughing, semi-finishing, and finishing, using diamond abrasives (with grit sizes 45, 150, 300, 600, 1500, and 3000). The experiments were carried out on two granites, one being black and the other white. The tested spindle speeds ranged from 1500 rpm to 3500 rpm and the feed rates from 500–1500 mm/min. It was found that roughing operations produce more fine particles while finishing operations produce more ultrafine particles. These particle emissions, as well as the part quality and the cutting forces are strongly dependent on cutting speed and on the grit size of the abrasive used. MDPI 2021-10-29 /pmc/articles/PMC8585234/ /pubmed/34772022 http://dx.doi.org/10.3390/ma14216496 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bahri, Haithem
Songmene, Victor
Kouam, Jules
Samuel, Agnes Marie
Samuel, Fawzy Hosny
CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title_full CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title_fullStr CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title_full_unstemmed CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title_short CNC Edge Finishing of Granite: Effect of Machining Conditions on Part Quality, Cutting Forces, and Particle Emissions
title_sort cnc edge finishing of granite: effect of machining conditions on part quality, cutting forces, and particle emissions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585234/
https://www.ncbi.nlm.nih.gov/pubmed/34772022
http://dx.doi.org/10.3390/ma14216496
work_keys_str_mv AT bahrihaithem cncedgefinishingofgraniteeffectofmachiningconditionsonpartqualitycuttingforcesandparticleemissions
AT songmenevictor cncedgefinishingofgraniteeffectofmachiningconditionsonpartqualitycuttingforcesandparticleemissions
AT kouamjules cncedgefinishingofgraniteeffectofmachiningconditionsonpartqualitycuttingforcesandparticleemissions
AT samuelagnesmarie cncedgefinishingofgraniteeffectofmachiningconditionsonpartqualitycuttingforcesandparticleemissions
AT samuelfawzyhosny cncedgefinishingofgraniteeffectofmachiningconditionsonpartqualitycuttingforcesandparticleemissions