中国激光, 2016, 43 (12): 1202003, 网络出版: 2016-12-09   

分区扫描路径规划及其对SLM成型件残余应力分布的影响 下载: 761次

Planning of Area-Partition Scanning Path and Its Effect on Residual Stress of SLM Molding Parts
作者单位
华南理工大学机械与汽车工程学院, 广东 广州 510641
摘要
为了解决激光选区熔化成型零件时扫描线过长导致的层内累积残余应力过大、易发生翘曲变形和裂纹等问题,提出了一种分区扫描策略。采用S形正交扫描策略和分区扫描策略分别规划了零件扫描路径,实验验证了分区扫描策略的有效性。实验结果表明,采用分区扫描策略能有效降低边界拉应力,减小平面残余应力波动,提高成型件的力学性能。
Abstract
In order to solve such problems as residual stress accumulated within layers being excessive, and warpage and cracks being easy to occur as a result of the long scanning line when selective laser melting is used to mold parts, one scheme of area-partition scanning is proposed. The S-shaped orthogonal layer cross scanning strategy and area-partition scanning strategy are respectively adopted to plan scanning path and the validity of the latter strategy is experimentally confirmed. The experimental results indicate that, with the area-partition scanning strategy, the tensile stress at rims of molding parts is effectively reduced, the fluctuation of residual stress at surface is weakened, and the mechanical property of molding parts is improved.
参考文献

[1] 麦淑珍, 杨永强, 王迪. 激光选区熔化成型NiCr合金曲面表面形貌及粗糙度变化规律研究[J]. 中国激光, 2015, 42(12): 1203004.

    Mai Shuzhen, Yang Yongqiang, Wang Di. Study on surface morphology and roughness variation of NiCr alloy curved surface manufactured by selective laser melting[J]. Chinese J Lasers, 2015, 42(12): 1203004.

[2] 宋长辉, 杨永强, 叶梓恒, 等. 基于选区激光熔化快速成型的自由设计与制造进展[J]. 激光与光电子学进展, 2013, 50(8): 080026.

    Song Changhui, Yang Yongqiang, Ye Ziheng, et al. Development of freeform design and manufacturing based on selective laser melting[J]. Laser & Optoelectronics Progress, 2013, 58(8): 080026.

[3] Wehmller M, Warnke P H, Zilian C, et al. Implant design and production-A new approach by selective laser melting[J]. Proceedings of the 19th International Congress and Exhibition, 2005,1281: 690-695.

[4] Campbell I, Bourell D, Gibson I. Additive manufacturing: Rapid prototyping comes of age[J]. Rapid Prototyping Journal, 2012, 18(4): 255-258.

[5] 黄小毛, 叶春生, 黄伟军, 等. 激光快速成形正多边形格子扫描路径的生成算法[J]. 锻压技术, 2013, 38(3): 152-155.

    Huang Xiaomao, Ye Chunsheng, Huang Weijun, et al. Planning algorithm of regular polygon grid path for laser rapid prototyping[J]. Forging & Stamping Technology, 2013, 38(3): 152-155.

[6] 钱波, 张李超, 黄树槐. 基于平面多边形Voronoi图的算法与快速成形应用[J]. 华中科技大学学报, 2008, 36(1): 125-128.

    Qian Bo, Zhang Lichao, Huang Shuhuai. Voronoi diagrams algorithm based on polygon and in the rapid prototyping applications[J]. Journal of Huazhong University of Science and Technology, 2008, 36(1): 125-128.

[7] Parry L, Ashcroft I, Bracket D, et al. Investigation of residual stresses in selective laser melting[J]. Key Engineering Materials, 2015, 627: 129-132.

[8] 陈德宁, 刘婷婷, 廖文和, 等. 扫描策略对金属粉末选区激光熔化温度场的影响[J]. 中国激光, 2016, 43(4): 0403003.

    Chen Dening, Liu Tingting, Liao Wenhe, et al. Temperature field during selective laser melting of metal powder under different scanning strategies[J]. Chinese J Lasers, 2016, 43(4): 0403003.

[9] Senthilkumaran K, Pandey P M, Rao P V M. Influence of building strategies on the accuracy of parts in selective laser sintering[J]. Materials & Design, 2009, 30(8): 2946-2954.

[10] Dai K, Shaw L. Distortion minimization of laser-processed components through control of laser scanning patterns[J]. Rapid Prototyping Journal, 2002, 8(5): 270-276.

[11] Matsumoto M, Shiomi M, Osakada K, et al. Finite element analysis of single layer forming on metallic powder bed in rapid prototyping by selective laser processing[J]. International Journal of Machine Tools and Manufacture, 2002, 42(1): 61-67.

[12] 陈鸿, 张志钢, 程军. SLS快速成型工艺激光扫描路径策略研究[J]. 应用基础与工程科学学报, 2001, 9(2): 202-207.

    Chen Hong, Zhang Zhigang, Cheng Jun. Scanning path scheme for SLS RP system[J]. Journal of Basic Science and Engineering, 2001, 9(2): 202-207.

[13] 张曼. RP中扫描路径的生成与优化研究[D]. 西安: 西安科技大学, 2006.

    Zhang Man. Study on generation and optimization for scanning path in RP[D]. Xi′an: Xi′an University of Science, 2006.

[14] Lu Y J, Wu S Q, Gan Y L, et al. Study on the microstructure, mechanical property and residual stress of SLM Inconel-718 alloy manufactured by differing island scanning strategy[J]. Optics & Laser Technology, 2015, 75: 197-206.

[15] 王迪, 杨永强, 黄延禄, 等. 选区激光熔化直接成型金属零件致密度的改善[J]. 华南理工大学学报, 2010, 38(6): 107-111.

    Wang Di, Yang Yongqiang, Huang Yanlu, et al. Density improvement of metal parts directly fabricated via selective laser melting[J]. Journal of South China University of Technology, 2010, 38(6): 107-111.

[16] 赵进炎, 仇毅, 刘富荣, 等. SLM成型医用钴铬合金的表面粗糙度与致密度研究[J]. 应用激光, 2014, 34(6): 524-527.

    Zhao Jinyan, Qiu Yi, Liu Furong, et al. Research of surface roughness and relative density of SLM medical Co-Cr alloy[J]. Applied Laser, 2014, 34(6): 524-527.

邓诗诗, 杨永强, 李阳, 王迪, 王安民, 宋长辉. 分区扫描路径规划及其对SLM成型件残余应力分布的影响[J]. 中国激光, 2016, 43(12): 1202003. Deng Shishi, Yang Yongqiang, Li Yang, Wang Di, Wang Anmin, Song Changhui. Planning of Area-Partition Scanning Path and Its Effect on Residual Stress of SLM Molding Parts[J]. Chinese Journal of Lasers, 2016, 43(12): 1202003.

本文已被 12 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!