Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces
Friction involved in metal-forming processes typically leads to the wear of tool and die surfaces, and in turn shortens the tool’s service life. A thriving need for reducing surface friction requires the tool surface to be modified. This paper presents the surface modification of SKH51 tool steel, o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/11/11/456 |
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| author | Chansovannkumpheak Phun Witthaya Daodon Kamthon Septham Peerapong Kumkhuntod Hao Zhu Viboon Saetang |
| author_facet | Chansovannkumpheak Phun Witthaya Daodon Kamthon Septham Peerapong Kumkhuntod Hao Zhu Viboon Saetang |
| author_sort | Chansovannkumpheak Phun |
| collection | DOAJ |
| description | Friction involved in metal-forming processes typically leads to the wear of tool and die surfaces, and in turn shortens the tool’s service life. A thriving need for reducing surface friction requires the tool surface to be modified. This paper presents the surface modification of SKH51 tool steel, on which the hexagonal array of micro-dimples is fabricated by a nanosecond pulse laser. Using the average laser power of 25 W can create decent dimples for trapping lubricant and enabling hydraulic pressure at the surfaces in contact. The effect of dimple density and sliding speed on the coefficient of friction was examined in this study through the pin-on-disc test, in which a stainless steel pin was applied against the tool steel disc with a constant load. The laser-textured tool steel surface with a dimple density of 35% had a friction coefficient of 0.087, which was lower than that of the untextured surface by 12.6% when using a sliding speed of 15 cm/s. In addition to friction reduction, there was no substantial wear found on the laser-textured surface compared to the untextured sample. The findings of this study can be a processing guideline and benefit the treatment of tool and die surfaces for friction and wear reduction in metal-forming and related processes. |
| first_indexed | 2024-03-09T16:40:41Z |
| format | Article |
| id | doaj.art-ff923503473242dea3ea38ea17254024 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T16:40:41Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-ff923503473242dea3ea38ea172540242023-11-24T14:52:42ZengMDPI AGLubricants2075-44422023-10-01111145610.3390/lubricants11110456Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel SurfacesChansovannkumpheak Phun0Witthaya Daodon1Kamthon Septham2Peerapong Kumkhuntod3Hao Zhu4Viboon Saetang5Department of Production Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Industrial Engineering, Faculty of Engineering and Technology, Rajamangala University of Technology Isan, Nakhon Ratchasima 30000, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaDepartment of Production Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandFriction involved in metal-forming processes typically leads to the wear of tool and die surfaces, and in turn shortens the tool’s service life. A thriving need for reducing surface friction requires the tool surface to be modified. This paper presents the surface modification of SKH51 tool steel, on which the hexagonal array of micro-dimples is fabricated by a nanosecond pulse laser. Using the average laser power of 25 W can create decent dimples for trapping lubricant and enabling hydraulic pressure at the surfaces in contact. The effect of dimple density and sliding speed on the coefficient of friction was examined in this study through the pin-on-disc test, in which a stainless steel pin was applied against the tool steel disc with a constant load. The laser-textured tool steel surface with a dimple density of 35% had a friction coefficient of 0.087, which was lower than that of the untextured surface by 12.6% when using a sliding speed of 15 cm/s. In addition to friction reduction, there was no substantial wear found on the laser-textured surface compared to the untextured sample. The findings of this study can be a processing guideline and benefit the treatment of tool and die surfaces for friction and wear reduction in metal-forming and related processes.https://www.mdpi.com/2075-4442/11/11/456laserdimpletribologyfrictionsurfaceSKH51 |
| spellingShingle | Chansovannkumpheak Phun Witthaya Daodon Kamthon Septham Peerapong Kumkhuntod Hao Zhu Viboon Saetang Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces Lubricants laser dimple tribology friction surface SKH51 |
| title | Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces |
| title_full | Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces |
| title_fullStr | Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces |
| title_full_unstemmed | Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces |
| title_short | Laser-Fabricated Micro-Dimples for Improving Frictional Property of SKH51 Tool Steel Surfaces |
| title_sort | laser fabricated micro dimples for improving frictional property of skh51 tool steel surfaces |
| topic | laser dimple tribology friction surface SKH51 |
| url | https://www.mdpi.com/2075-4442/11/11/456 |
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