Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing
In this article, we report the results of experimental studies on the impact of ball burnishing parameters on the roughness, microstructure and microhardness of the surface layer of laser-cut C45 steel parts. We also analysed the distribution of residual stresses generated in the surface layer of th...
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MDPI AG
2020-08-01
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Online Access: | https://www.mdpi.com/1996-1944/13/15/3429 |
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author | Agnieszka Skoczylas Kazimierz Zaleski |
author_facet | Agnieszka Skoczylas Kazimierz Zaleski |
author_sort | Agnieszka Skoczylas |
collection | DOAJ |
description | In this article, we report the results of experimental studies on the impact of ball burnishing parameters on the roughness, microstructure and microhardness of the surface layer of laser-cut C45 steel parts. We also analysed the distribution of residual stresses generated in the surface layer of these parts. Laser-cut parts often require finishing to improve the quality of their surface. The tests performed in this study were aimed at assessing whether ball burnishing could be used as a finishing operation for parts of this type. Ball burnishing tests were performed on an FV-580a vertical machining centre using a mechanically controlled burnishing tool. The following parameters were varied during the ball burnishing tests: burnishing force <i>F<sub>n</sub></i>, path interval <i>f<sub>w</sub></i> and the diameter of the burnishing ball <i>d<sub>n</sub></i>. Ball burnishing of laser-cut C45 steel parts reduced the surface roughness parameters <i>Sa</i> and <i>Sz</i> by up to 60% in relation to the values obtained after laser cutting. Finish machining also led to the reorganization of the geometric structure of the surface, resulting in an increase in the absolute value of skewness <i>Ssk</i>. This was accompanied by an increment in microhardness (maximum microhardness increment was Δ<i>HV</i> = 95 HV0.05, and the thickness of the hardened layer was <i>g<sub>h</sub></i> = 40 µm) and formation of compressive residual stresses in the surface layer. |
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issn | 1996-1944 |
language | English |
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spelling | doaj.art-c1c3157927eb4b90bb2f45f598b9d2f72023-11-20T08:59:49ZengMDPI AGMaterials1996-19442020-08-011315342910.3390/ma13153429Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball BurnishingAgnieszka Skoczylas0Kazimierz Zaleski1Department of Production Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka, 20-618 Lublin, PolandDepartment of Production Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka, 20-618 Lublin, PolandIn this article, we report the results of experimental studies on the impact of ball burnishing parameters on the roughness, microstructure and microhardness of the surface layer of laser-cut C45 steel parts. We also analysed the distribution of residual stresses generated in the surface layer of these parts. Laser-cut parts often require finishing to improve the quality of their surface. The tests performed in this study were aimed at assessing whether ball burnishing could be used as a finishing operation for parts of this type. Ball burnishing tests were performed on an FV-580a vertical machining centre using a mechanically controlled burnishing tool. The following parameters were varied during the ball burnishing tests: burnishing force <i>F<sub>n</sub></i>, path interval <i>f<sub>w</sub></i> and the diameter of the burnishing ball <i>d<sub>n</sub></i>. Ball burnishing of laser-cut C45 steel parts reduced the surface roughness parameters <i>Sa</i> and <i>Sz</i> by up to 60% in relation to the values obtained after laser cutting. Finish machining also led to the reorganization of the geometric structure of the surface, resulting in an increase in the absolute value of skewness <i>Ssk</i>. This was accompanied by an increment in microhardness (maximum microhardness increment was Δ<i>HV</i> = 95 HV0.05, and the thickness of the hardened layer was <i>g<sub>h</sub></i> = 40 µm) and formation of compressive residual stresses in the surface layer.https://www.mdpi.com/1996-1944/13/15/3429laser cuttingball burnishing surface roughnessmicrostructuremicrohardnessresidual stress |
spellingShingle | Agnieszka Skoczylas Kazimierz Zaleski Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing Materials laser cutting ball burnishing surface roughness microstructure microhardness residual stress |
title | Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing |
title_full | Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing |
title_fullStr | Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing |
title_full_unstemmed | Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing |
title_short | Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing |
title_sort | selected properties of the surface layer of c45 steel parts subjected to laser cutting and ball burnishing |
topic | laser cutting ball burnishing surface roughness microstructure microhardness residual stress |
url | https://www.mdpi.com/1996-1944/13/15/3429 |
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