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A comprehensive evaluation for different post-curing methods used in stereolithography additive manufacturing
Journal of Manufacturing Processes ( IF 6.2 ) Pub Date : 2020-06-05 , DOI: 10.1016/j.jmapro.2020.04.077
Jing Zhao , Yiran Yang , Lin Li

Additive manufacturing, as one of the most promising advanced manufacturing technologies, has been obtaining increasing public interest since its first emergence in the 1980s. Owing to its unique layer-wise production method, additive manufacturing can fabricate complex parts and reduce the production time. Limited by current processes and materials, the overall performance of additive manufactured products is not always exceptional especially in terms of print quality, mechanical property, and sustainability. To address this issue, post-curing is often used to further alter the part performance. In this paper, a comprehensive evaluation is conducted for three most popular post-curing processes, i.e., conventional oven, microwave oven, and Ultraviolet chamber, considering their capabilities of altering ultimate tensile strength, hardness, dimensional variations, surface roughness, production cost, and energy consumption. To characterize the relation between post-curing process parameters and resulting performance, both analytical and statistical models are established and evaluated. The case study results suggest that various post-curing processes can cause different influences on the part performance. As an example, ultimate tensile strength can be improved by 70.83 % and 15.01 % when Ultraviolet and microwave oven are used, respectively. In addition, optimal post-curing strategies under different constraints are obtained based on established models, which will provide useful insights for post-curing process planning and optimization.



中文翻译:

立体光刻增材制造中不同后固化方法的综合评估

自1980年代首次出现以来,增材制造作为最有前途的先进制造技术之一,已引起越来越多的公众关注。由于其独特的分层生产方法,增材制造可以制造复杂的零件并减少生产时间。受当前工艺和材料的限制,增材制造产品的整体性能并不总是出色的,特别是在印刷质量,机械性能和可持续性方面。为了解决这个问题,经常使用后固化来进一步改变零件性能。本文针对三种最流行的后固化工艺(即常规烤箱,微波炉和紫外线室)进行了综合评估,考虑到它们改变极限拉伸强度,硬度,尺寸变化,表面粗糙度,生产成本和能耗。为了表征后固化工艺参数与最终性能之间的关系,建立并评估了分析和统计模型。案例研究结果表明,各种后固化工艺可能会对零件性能产生不同的影响。例如,当使用紫外线和微波炉时,极限拉伸强度可以分别提高70.83%和15.01%。此外,基于已建立的模型,可以获得在不同约束条件下的最佳后固化策略,这将为后固化工艺规划和优化提供有用的见解。为了表征后固化工艺参数与最终性能之间的关系,建立并评估了分析和统计模型。案例研究结果表明,各种后固化工艺可能会对零件性能产生不同的影响。例如,当使用紫外线和微波炉时,极限拉伸强度可以分别提高70.83%和15.01%。此外,基于已建立的模型,可以获得在不同约束条件下的最佳后固化策略,这将为后固化工艺规划和优化提供有用的见解。为了表征后固化工艺参数与最终性能之间的关系,建立并评估了分析和统计模型。案例研究结果表明,各种后固化工艺可能会对零件性能产生不同的影响。例如,当使用紫外线和微波炉时,极限拉伸强度可以分别提高70.83%和15.01%。此外,基于已建立的模型,可以获得在不同约束条件下的最佳后固化策略,这将为后固化工艺规划和优化提供有用的见解。当使用紫外线和微波炉时,极限拉伸强度可以分别提高70.83%和15.01%。此外,基于已建立的模型,可以获得在不同约束条件下的最佳后固化策略,这将为后固化工艺规划和优化提供有用的见解。当使用紫外线和微波炉时,极限拉伸强度可以分别提高70.83%和15.01%。此外,基于已建立的模型,可以获得不同约束条件下的最佳后固化策略,这将为后固化工艺规划和优化提供有用的见解。

更新日期:2020-06-05
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