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Title: Parametric Study On The CW Nd: YAG Laser Cutting Quality Of 1.25 mm Ultra Low Carbon Steel Sheets Using O2 Assist Gas

Abstract

There are many non-linear interaction factors responsible for the performance of the laser cutting process. Identification of the dominant factors that significantly affect the cut quality is important. In the current research, the gas pressure, laser power and scanning speed were selected as the cutting parameters. Effect of the cutting parameters on the cut quality was investigated, by monitoring the variation in hardness, oxide layer width and microstructural changes within the heat affected zone (HAZ). Results revealed that good quality cuts can be produced in ultra low carbon steel thin sheets, using CW Nd:YAG laser at a window of scanning speed ranging from 1100-1500 mm/min at a minimum heat input of 337watts under an assisting O2 gas pressure of 5 bar. Higher laser power resulted in either strengthening or softening in the HAZ surrounding the cut kerf. The oxide layer width is not affected by the energy density input but rather affected by the O2 gas pressure due to exothermal reaction.

Authors:
 [1]; ; ;  [2]
  1. Department of Mechanical Engineering, American University in Cairo (Egypt)
  2. National Institute of Laser Enhanced Science, NILES, Cairo University (Egypt)
Publication Date:
OSTI Identifier:
21054897
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 888; Journal Issue: 1; Conference: MTPR-06: 2. international conference on modern trends in physics research, Cairo (Egypt), 6-11 Apr 2006; Other Information: DOI: 10.1063/1.2711110; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARBON STEELS; CUTTING; ENERGY DENSITY; HARDNESS; HEAT AFFECTED ZONE; LASER BEAM MACHINING; LASER RADIATION; LAYERS; MICROSTRUCTURE; NEODYMIUM LASERS; NONLINEAR PROBLEMS; OXIDES; OXYGEN; PARAMETRIC ANALYSIS; PERFORMANCE; VARIATIONS

Citation Formats

Salem, Hanadi G., Abbas, Wafaa A., Mansour, Mohy S., and Badr, Yehia A. Parametric Study On The CW Nd: YAG Laser Cutting Quality Of 1.25 mm Ultra Low Carbon Steel Sheets Using O2 Assist Gas. United States: N. p., 2007. Web. doi:10.1063/1.2711110.
Salem, Hanadi G., Abbas, Wafaa A., Mansour, Mohy S., & Badr, Yehia A. Parametric Study On The CW Nd: YAG Laser Cutting Quality Of 1.25 mm Ultra Low Carbon Steel Sheets Using O2 Assist Gas. United States. doi:10.1063/1.2711110.
Salem, Hanadi G., Abbas, Wafaa A., Mansour, Mohy S., and Badr, Yehia A. Wed . "Parametric Study On The CW Nd: YAG Laser Cutting Quality Of 1.25 mm Ultra Low Carbon Steel Sheets Using O2 Assist Gas". United States. doi:10.1063/1.2711110.
@article{osti_21054897,
title = {Parametric Study On The CW Nd: YAG Laser Cutting Quality Of 1.25 mm Ultra Low Carbon Steel Sheets Using O2 Assist Gas},
author = {Salem, Hanadi G. and Abbas, Wafaa A. and Mansour, Mohy S. and Badr, Yehia A.},
abstractNote = {There are many non-linear interaction factors responsible for the performance of the laser cutting process. Identification of the dominant factors that significantly affect the cut quality is important. In the current research, the gas pressure, laser power and scanning speed were selected as the cutting parameters. Effect of the cutting parameters on the cut quality was investigated, by monitoring the variation in hardness, oxide layer width and microstructural changes within the heat affected zone (HAZ). Results revealed that good quality cuts can be produced in ultra low carbon steel thin sheets, using CW Nd:YAG laser at a window of scanning speed ranging from 1100-1500 mm/min at a minimum heat input of 337watts under an assisting O2 gas pressure of 5 bar. Higher laser power resulted in either strengthening or softening in the HAZ surrounding the cut kerf. The oxide layer width is not affected by the energy density input but rather affected by the O2 gas pressure due to exothermal reaction.},
doi = {10.1063/1.2711110},
journal = {AIP Conference Proceedings},
number = 1,
volume = 888,
place = {United States},
year = {Wed Feb 14 00:00:00 EST 2007},
month = {Wed Feb 14 00:00:00 EST 2007}
}