Energy consumption and process characteristics of picosecond laser de-coating of cutting tools
| Autor: | Paul Mativenga, Lin Li, Zhu Liu, Jinglei Ouyang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Circular economy 020209 energy Strategy and Management Cleaning Laser 02 engineering and technology engineering.material Industrial and Manufacturing Engineering law.invention Coating chemistry.chemical_compound law Tungsten carbide 0202 electrical engineering electronic engineering information engineering Water cooling Specific energy 0505 law General Environmental Science Energy demand Renewable Energy Sustainability and the Environment business.industry 05 social sciences Energy consumption Carbon footprint Wavelength chemistry 050501 criminology engineering Tool Optoelectronics business Energy (signal processing) |
| Zdroj: | Ouyang, J, Mativenga, P T, Liu, Z & Li, L 2021, ' Energy consumption and process characteristics of picosecond laser de-coating of cutting tools ', Journal of Cleaner Production, vol. 290, 125815 . https://doi.org/10.1016/j.jclepro.2021.125815 Ouyang, J, Mativenga, P, Liu, Z & Li, L 2021, ' Energy consumption and process characteristics of picosecond laser de-coating of cutting tools ', Journal of Cleaner Production, vol. 290, 125815, pp. 1-10 . https://doi.org/10.1016/j.jclepro.2021.125815 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2021.125815 |
| Popis: | Laser de-coating is a promising technology for selective coating removal to facilitate reuse of coated tools in a circular economy. It is timely to understand and optimise the quality, energy requirements and environmental footprint of the laser de-coating process. This paper reports on an investigation into process characteristics, energy demands and carbon footprints in coating removal from tungsten carbide tool inserts using high power picosecond laser sources with different pulse widths and wavelengths. The results demonstrate that although the 355 nm wavelength, 10 ps pulse width laser, has higher processing efficiency in terms of production rates, and lower specific energy for laser beam and material interaction, and results in better surface quality, the overall laser system energy consumption is much higher than that of using the 1064 nm wavelength, 150 ps pulse width laser for the removal of coatings on tungsten carbide cutting tools. This is largely due to the high energy demand of the water cooling system needed for the 355 nm wavelength picosecond laser whilst the 1064 nm picosecond is air cooled. There is therefore a need to optimise the total system energy consumption in the 355 nm picosecond laser, to support its superior laser de-coating performance. The paper shows the importance and challenges of optimising the energy consumption at different system boundaries. |
| Databáze: | OpenAIRE |
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