High-speed imaging of droplet behaviour during the CYCLAM drop-deposition technique

Document identifier: oai:DiVA.org:ltu-75729
Access full text here:10.1016/j.promfg.2019.08.027
Keyword: Engineering and Technology, Materials Engineering, Manufacturing, Surface and Joining Technology, Teknik och teknologier, Materialteknik, Bearbetnings-, yt- och fogningsteknik, Laser additive manufacturing, Circular economy, High-speed imaging, Laser cladding, Recycling, Produktionsutveckling, Manufacturing Systems Engineering
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 12 Responsible consumption and productionSDG 9 Industry, innovation and infrastructureSDG 7 Affordable and clean energy
The SDG label(s) above have been assigned by OSDG.ai


The material in laser additive manufacturing is traditionally supplied in the form of powder or sometimes wire. A technique called CYCLAM was recently presented which is a fast and direct recycling technique which lowers the number of steps that need to be taken in typical recycling, allowing for a more circular economy. The CYCLAM technique proposes that waste metal is directly recycled through laser cutting or laser ablation of one sheet and the molten droplet is directly deposited onto a new product and can be used for additive manufacturing or cladding. The technique also can also use materials that otherwise are not available as powder or wires. Because of the novelty of the technique, it is still scarcely studied, and many aspects still needs to be understood. This paper focusses on high-speed imaging of the technique to understand the droplet behaviour. The material removal of the feeding sheet was done with Remote Fusion Cutting. Different power levels lead to different drop geometry and flight pattern of the drops where the drops at higher power are pushed further forward. The influence of the laser power on the shape of the deposited track can be seen from cross sections of the cladded track where higher power means that more power is transmitted through the feeding sheet and onto the substrate which creates a smoother surface


Jesper Sundqvist

Luleå tekniska universitet; Produkt- och produktionsutveckling
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Ramiz Saeed Matti Samarjy

Luleå tekniska universitet; Produkt- och produktionsutveckling; University of Mosul, College of Engineering, Department of Mechanical Engineering, Mosul, Iraq
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