Analytical Solution of Temperature Distribution in a Nonuniform Medium Due to a Moving Laser Beam and a Double Beam Scanning Strategy in the Selective Laser Melting Process

Loh Loong-Ee; Song Jie; Guo Fenglin; Bi Guijun

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Analytical Solution of Temperature Distribution in a Nonuniform Medium Due to a Moving Laser Beam and a Double Beam Scanning Strategy in the Selective Laser Melting Process

机译：选择性激光熔化过程中移动激光束和双光束扫描策略在非均匀介质中温度分布的解析解

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Selective laser melting (SLM) has received increasing attention in recent years as an innovative manufacturing technique. The present SLM process only uses a single laser beam to melt and consolidate the powder, which may result in excessive evaporation. In this paper, a double beam scanning strategy is investigated in which the first laser beam preheats the powder just below the sintering point while the second laser beam completely melts the powder. An analytical solution on the temperature distribution heated by a moving laser beam in the powder-bulk domain is derived and is used to determine the critical radius of the first laser beam. The single and double beam scanning strategies are compared numerically and it is found that double beam scanning can effectively reduce material evaporation and increase the amount of powder melted in the SLM process.

机译：选择性激光熔化（SLM）作为一种创新的制造技术，近年来受到越来越多的关注。当前的SLM工艺仅使用单个激光束来熔化和固结粉末，这可能导致过度蒸发。在本文中，研究了一种双光束扫描策略，其中第一激光束将粉末加热到刚好低于烧结点的温度，而第二激光束将粉末完全熔化。推导了在散装体域中由移动的激光束加热的温度分布的解析解，并用于确定第一激光束的临界半径。数值比较了单光束和双光束扫描策略，发现双光束扫描可以有效地减少材料蒸发并增加SLM工艺中熔化的粉末量。

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来源
《Journal of Heat Transfer》 |2018年第8期|082302.1-082302.6|共6页
作者
Loh Loong-Ee; Song Jie; Guo Fenglin; Bi Guijun;
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作者单位

Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore;

Singapore Inst Mfg Technol, Joining Technol Grp, 73 Nanyang Dr, Singapore 637662, Singapore;

Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China;

Singapore Inst Mfg Technol, Joining Technol Grp, 73 Nanyang Dr, Singapore 637662, Singapore;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
analytical solution; selective laser melting; numerical simulation;

机译：解析溶液;选择性激光熔化;数值模拟;

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1. Selective Laser Melting of aluminium alloy using a uniform beam profile: The paper analyzes the results of laser scanning in Selective Laser Melting using a uniform laser beam [J] . L. E. Loh, Z. H. Liu, D. Q. Zhang, Virtual and Physical Prototyping . 2014,第1期

机译：使用均匀光束轮廓的铝合金选择性激光熔化：本文分析使用均匀激光束的选择性激光熔化中的激光扫描结果
2. Analytical solution for a transient, three-dimensional temperature distribution due to a moving laser beam [J] . Guillermo Araya, Gustavo Gutierrez International Journal of Heat and Mass Transfer . 2006,第21a22期

机译：激光光束移动引起的瞬态三维温度分布的解析解
3. High temperature air oxidation behavior of Hastelloy X processed by Electron Beam Melting (EBM) and Selective Laser Melting (SLM) [J] . Romedenne M., Pillai R., Kirka M., Corrosion science . 2020,第Jula期

机译：电子束熔化（EBM）加工的Hastelloy X的高温空气氧化行为和选择性激光熔化（SLM）
4. Simulation Aided Manufacturing: Scanning Strategies for Low Distortion in Laser Beam Melting Processes [C] . Nils Keller, John Schlasche, Hongxiao Xu, Fraunhofer Direct Digital Manufacturing Conference . 2016

机译：仿真辅助制造：激光束熔化过程中低失真的扫描策略
5. Exploring new concepts in directional solidification by electron beam melting and selective laser melting. [D] . Martinez, Edwin. 2013

机译：探索通过电子束熔化和选择性激光熔化进行定向凝固的新概念。
6. Effects of Top-hat Laser Beam Processing and Scanning Strategies in Laser Micro-Structuring [O] . Hoang Le, Pavel Penchev, Anne Henrottin, 2020

机译：礼帽激光束加工和扫描策略在激光微结构中的作用
7. High temperature air oxidation behavior of Hastelloy X processed by Electron Beam Melting (EBM) and Selective Laser Melting (SLM) [O] . M. Romedenne, R. Pillai, M. Kirka, 2020

机译：电子束熔化（EBM）加工的Hastelloy X的高温空气氧化行为和选择性激光熔化（SLM）
8. Effect of Laser Scan Strategy on Distortion and Residual Stresses of Arches made with Selective Laser Melting. [R] . Bagg, S. D., Sochalski-Kolbus, L. M., Bunn, J. 2016

机译：激光扫描策略对选择性激光熔化拱形畸变和残余应力的影响。

Analytical Solution of Temperature Distribution in a Nonuniform Medium Due to a Moving Laser Beam and a Double Beam Scanning Strategy in the Selective Laser Melting Process

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