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A study of preheating characteristics according to various preheating methods for laser-assisted machining

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Abstract

Laser-assisted machining (LAM) is being actively studied as a new method for machining difficult-to-cut materials. In LAM, machining is performed after preheating the material using a laser. Among difficult-to-cut materials, silicon nitride, a type of ceramic material, is difficult to machine due to its high strength at high temperature and high thermal conductivity. Although machining of silicon nitride using laser-assisted turning has been performed, there are few studies and results using laser-assisted milling because it is difficult to maintain the proper preheating temperature of silicon nitride. So, in this study, three preheating methods, one-way, zig-zag, and back-and-forth, are proposed for machining silicon nitride using laser-assisted milling. The preheating effect according to the three preheating methods is analyzed by finite element analyses and experiments. And, the back-and-forth method is verified to be the most effective method.

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Authors and Affiliations

  1. School of Mechanical Engineering, Changwon National University, #9 Sarim-dong, Changwon-si, Gyeongsangnam-do, 641-773, Republic of Korea

    Seong-Ju Hwang, Won-Jung Oh & Choon-Man Lee

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  1. Seong-Ju Hwang
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  2. Won-Jung Oh
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  3. Choon-Man Lee
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Correspondence to Choon-Man Lee.

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Hwang, SJ., Oh, WJ. & Lee, CM. A study of preheating characteristics according to various preheating methods for laser-assisted machining. Int J Adv Manuf Technol 86, 3015–3024 (2016). https://doi.org/10.1007/s00170-016-8387-9

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  • DOI: https://doi.org/10.1007/s00170-016-8387-9

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