Cargando…

Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy

Magnesium alloys are of increasing interest in the medical industry due to their biodegradability properties and better mechanical properties as compared to biodegradable polymers. Fiber laser cutting of AZ31 magnesium alloy tubes was carried out to study the effect of cutting conditions on wall sur...

Descripción completa

Detalles Bibliográficos
Autores principales: García-López, Erika, Ibarra-Medina, Juansethi R., Siller, Hector R., Lammel-Lindemann, Jan A., Rodriguez, Ciro A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6215129/
https://www.ncbi.nlm.nih.gov/pubmed/30424418
http://dx.doi.org/10.3390/mi9100485
_version_ 1783368082367971328
author García-López, Erika
Ibarra-Medina, Juansethi R.
Siller, Hector R.
Lammel-Lindemann, Jan A.
Rodriguez, Ciro A.
author_facet García-López, Erika
Ibarra-Medina, Juansethi R.
Siller, Hector R.
Lammel-Lindemann, Jan A.
Rodriguez, Ciro A.
author_sort García-López, Erika
collection PubMed
description Magnesium alloys are of increasing interest in the medical industry due to their biodegradability properties and better mechanical properties as compared to biodegradable polymers. Fiber laser cutting of AZ31 magnesium alloy tubes was carried out to study the effect of cutting conditions on wall surface roughness and back-wall dross. During the experiments, an argon gas chamber was adapted in order to avoid material reactivity with oxygen and thus better control the part quality. A surface response methodology was applied to identify the significance of pulse overlapping and pulse energy. Our results indicate minimum values of surface roughness (R(a) < 0.7 μm) when the spot overlapping is higher than 50%. A back-wall dross range of 0.24% to 0.94% was established. In addition, a reduction in back-wall dross accumulations was obtained after blowing away the dross particles from inside the tube using an argon gas jet, reaching values of 0.21%. Laser cutting experimental models show a quadratic model for back-wall dross related with the interaction of the pulse energy, and a linear model dependent on pulse overlapping factor for surface roughness.
format Online
Article
Text
id pubmed-6215129
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-62151292018-11-06 Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy García-López, Erika Ibarra-Medina, Juansethi R. Siller, Hector R. Lammel-Lindemann, Jan A. Rodriguez, Ciro A. Micromachines (Basel) Article Magnesium alloys are of increasing interest in the medical industry due to their biodegradability properties and better mechanical properties as compared to biodegradable polymers. Fiber laser cutting of AZ31 magnesium alloy tubes was carried out to study the effect of cutting conditions on wall surface roughness and back-wall dross. During the experiments, an argon gas chamber was adapted in order to avoid material reactivity with oxygen and thus better control the part quality. A surface response methodology was applied to identify the significance of pulse overlapping and pulse energy. Our results indicate minimum values of surface roughness (R(a) < 0.7 μm) when the spot overlapping is higher than 50%. A back-wall dross range of 0.24% to 0.94% was established. In addition, a reduction in back-wall dross accumulations was obtained after blowing away the dross particles from inside the tube using an argon gas jet, reaching values of 0.21%. Laser cutting experimental models show a quadratic model for back-wall dross related with the interaction of the pulse energy, and a linear model dependent on pulse overlapping factor for surface roughness. MDPI 2018-09-24 /pmc/articles/PMC6215129/ /pubmed/30424418 http://dx.doi.org/10.3390/mi9100485 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
García-López, Erika
Ibarra-Medina, Juansethi R.
Siller, Hector R.
Lammel-Lindemann, Jan A.
Rodriguez, Ciro A.
Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title_full Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title_fullStr Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title_full_unstemmed Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title_short Surface Finish and Back-Wall Dross Behavior during the Fiber Laser Cutting of AZ31 Magnesium Alloy
title_sort surface finish and back-wall dross behavior during the fiber laser cutting of az31 magnesium alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6215129/
https://www.ncbi.nlm.nih.gov/pubmed/30424418
http://dx.doi.org/10.3390/mi9100485
work_keys_str_mv AT garcialopezerika surfacefinishandbackwalldrossbehaviorduringthefiberlasercuttingofaz31magnesiumalloy
AT ibarramedinajuansethir surfacefinishandbackwalldrossbehaviorduringthefiberlasercuttingofaz31magnesiumalloy
AT sillerhectorr surfacefinishandbackwalldrossbehaviorduringthefiberlasercuttingofaz31magnesiumalloy
AT lammellindemannjana surfacefinishandbackwalldrossbehaviorduringthefiberlasercuttingofaz31magnesiumalloy
AT rodriguezciroa surfacefinishandbackwalldrossbehaviorduringthefiberlasercuttingofaz31magnesiumalloy