Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field

Continuous-wave (CW) lasers are widely used in laser polishing, but with CW laser polishing, it is difficult to reduce the surface roughness to 0.2 µm from an original value exceeding 1.0 µm. The aim of this study is to develop an innovative method of laser polishing assisted by a steady magnetic fi...

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Main Authors: Haibing Xiao, Yongquan Zhou, Mingjun Liu, Xiaomei Xu
Format: Article
Language:English
Published: AIP Publishing LLC 2020-02-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5116686
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spelling doaj-5e10b55a6a794c5a847d44810cc2820a2020-11-25T00:36:20ZengAIP Publishing LLCAIP Advances2158-32262020-02-01102025319025319-910.1063/1.5116686Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic fieldHaibing Xiao0Yongquan Zhou1Mingjun Liu2Xiaomei Xu3Intelligent Manufacturing and Equipment School, Shenzhen Institute of Information Technology, Shenzhen 518172, Guangdong, ChinaIntelligent Manufacturing and Equipment School, Shenzhen Institute of Information Technology, Shenzhen 518172, Guangdong, ChinaIntelligent Manufacturing and Equipment School, Shenzhen Institute of Information Technology, Shenzhen 518172, Guangdong, ChinaIntelligent Manufacturing and Equipment School, Shenzhen Institute of Information Technology, Shenzhen 518172, Guangdong, ChinaContinuous-wave (CW) lasers are widely used in laser polishing, but with CW laser polishing, it is difficult to reduce the surface roughness to 0.2 µm from an original value exceeding 1.0 µm. The aim of this study is to develop an innovative method of laser polishing assisted by a steady magnetic field to overcome that bottleneck and produce smoother surfaces. Two experiments confirm the hypothesis that the molten pool overflows during melting peaks to flow into valleys in CW laser polishing, resulting in secondary roughness that causes the aforementioned quality bottleneck. To either reduce or eliminate this secondary roughness, a steady magnetic field is used during CW laser polishing to suppress the overflow of the molten pool. A three-dimensional surface profiler, a scanning electron microscope, and a nanometer indentation tester are used to characterize and analyze the microstructure and properties of the materials. The experimental results show that the Lorentz force due to the steady magnetic field plays an important suppression role in reducing the secondary roughness.http://dx.doi.org/10.1063/1.5116686
collection DOAJ
language English
format Article
sources DOAJ
author Haibing Xiao
Yongquan Zhou
Mingjun Liu
Xiaomei Xu
spellingShingle Haibing Xiao
Yongquan Zhou
Mingjun Liu
Xiaomei Xu
Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
AIP Advances
author_facet Haibing Xiao
Yongquan Zhou
Mingjun Liu
Xiaomei Xu
author_sort Haibing Xiao
title Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
title_short Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
title_full Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
title_fullStr Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
title_full_unstemmed Laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
title_sort laser polishing of tool steel using a continuous-wave laser assisted by a steady magnetic field
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2020-02-01
description Continuous-wave (CW) lasers are widely used in laser polishing, but with CW laser polishing, it is difficult to reduce the surface roughness to 0.2 µm from an original value exceeding 1.0 µm. The aim of this study is to develop an innovative method of laser polishing assisted by a steady magnetic field to overcome that bottleneck and produce smoother surfaces. Two experiments confirm the hypothesis that the molten pool overflows during melting peaks to flow into valleys in CW laser polishing, resulting in secondary roughness that causes the aforementioned quality bottleneck. To either reduce or eliminate this secondary roughness, a steady magnetic field is used during CW laser polishing to suppress the overflow of the molten pool. A three-dimensional surface profiler, a scanning electron microscope, and a nanometer indentation tester are used to characterize and analyze the microstructure and properties of the materials. The experimental results show that the Lorentz force due to the steady magnetic field plays an important suppression role in reducing the secondary roughness.
url http://dx.doi.org/10.1063/1.5116686
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AT yongquanzhou laserpolishingoftoolsteelusingacontinuouswavelaserassistedbyasteadymagneticfield
AT mingjunliu laserpolishingoftoolsteelusingacontinuouswavelaserassistedbyasteadymagneticfield
AT xiaomeixu laserpolishingoftoolsteelusingacontinuouswavelaserassistedbyasteadymagneticfield
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