Laser Structuring for Development of Metallic Surfaces

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Structural Integrity of Metals".

Deadline for manuscript submissions: closed (15 March 2023) | Viewed by 1594

Special Issue Editor

Department of Production Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Interests: laser material processing; micro/nanomanufacturing; machining; surface engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Laser structuring is a promising method for improving various properties of metallic surfaces or inducing novel properties that the surface does not initially have by itself. Several techniques have been developed and employed either through selective laser ablation or the laser deposition of coating materials on metal surfaces, where micro/nano/multiscale structures are created for a specific surface functionality. This Special Issue on “Laser Structuring for Development of Metallic Surfaces” of Metals aims to present the latest research on laser surface structuring processes and their related technology for improving the properties of metallic surfaces. Novel findings and applications of this topic include, but are not limited to, the laser surface modification of metals for reducing friction, retaining lubricants, diffracting lights in optical applications, and inducing hydrophobic/hydrophilic features. Contributions to the characterization of laser-structured surfaces and subsurfaces, as well as their advanced characterizing techniques in terms of metallurgical microstructures, damage, and changes of mechanical and chemical properties, are invited for this Special Issue. Recent advances in surface structuring processes performed by other high-energy beam techniques are also welcome.

Dr. Viboon Saetang
Guest Editor

Manuscript Submission Information

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Keywords

  • laser
  • surface engineering
  • surface modification
  • texturing
  • deposition
  • coating
  • multiscale structuring
  • tribology
  • wettability

Published Papers (1 paper)

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Research

26 pages, 14319 KiB  
Article
Improvement of Seizure Resistance in Ironing of Aluminum Alloy Sheets and Stainless Steel Cups by Utilizing Laser Textured Die Having Lubricant Pockets
by Yohei Abe, Mika Sugiura, Takumi Ando, Peerapong Kumkhuntod, Kamthon Septham, Witthaya Daodon and Ken-ichiro Mori
Metals 2023, 13(4), 803; https://doi.org/10.3390/met13040803 - 19 Apr 2023
Cited by 1 | Viewed by 1216
Abstract
Seizure during ironing negatively affects the quality of parts and die life. To prevent seizures, lubrication has to be improved. In this study, laser-textured dies with lubricant pockets were utilized to improve seizure resistance in the ironing of aluminum alloy sheets and stainless [...] Read more.
Seizure during ironing negatively affects the quality of parts and die life. To prevent seizures, lubrication has to be improved. In this study, laser-textured dies with lubricant pockets were utilized to improve seizure resistance in the ironing of aluminum alloy sheets and stainless steel cups. The effects of array patterns of micro-pockets, such as grid and crossing array patterns with circular pockets, as well as a grooved array patterns on seizure resistance, were experimentally examined by strip ironing. The sheet and die materials were the A1050-O aluminum alloy and JIS SKD11 tool steel, respectively. Moreover, the underlying physics of the lubricant flow influencing the load-carrying capacity were investigated using three-dimensional computational fluid dynamics simulations. The optimum array patterns of the micro-pockets were then utilized on a tungsten carbide-cobalt (WC-Co) die surface for ironing SUS430 stainless steel cylindrical cups. The strip ironing results showed that the grid array pattern was successful in ironing sheets with a high ironing ratio. The grid array pattern increased the load-carrying capacity of the lubricant more than the crossing pattern, as demonstrated by the simulations, thereby improving the ironing limit. The subsequent ironing of stainless steel cups revealed that when using a textured die with a grid array pattern and lubricant without the extreme pressure additive in comparison to an untextured die, the ironing limit increased by 6% and the average ironing load decreased by 35%. The seizure resistance was improved because the pockets on the surface structured by laser surface texturing improved the load-carrying capacity during ironing. Full article
(This article belongs to the Special Issue Laser Structuring for Development of Metallic Surfaces)
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