中国激光, 2010, 37 (12): 3162, 网络出版: 2014-03-12   

载气式同轴送粉喷嘴的数值模拟及实验研究

Numerical Simulation and Experimental Research on Gas-Carrier Coaxial Powder Nozzle
作者单位
西安交通大学机械制造系统工程国家重点实验室, 陕西 西安 710049
摘要
为了提高同轴送粉喷嘴的汇聚性,增大粉末汇聚焦距,解决成形过程中粉末利用率低及粉末反弹造成的喷嘴堵粉等问题,研究了同轴送粉喷嘴结构参数中的粉腔间隙和粉腔锥角对粉末汇聚的影响规律。计算结果表明,在其他工艺参数一定的条件下,粉腔间隙越小,粉末的汇聚性越好;粉腔锥角越大,粉末的汇聚焦距越大,有利于零件的成形。所建模型和模拟结果对同轴送粉喷嘴的结构优化设计具有参考价值。并对模拟结果进行了实验验证,得到了工艺参数对单道高度和宽度的影响,并优化了工艺参数,最终制造出高度均匀的薄壁零件。
Abstract
In order to solve the problems of poor utilization of powder and nozzle blocked by rebounded powder by improving the powder gathering characteristic and increasing the powder focal length, the influence of the cone ring gap and the cone angle of the coaxial nozzle on the powder convergence is studied. The results show that the powder gathering characteristic is better when the cone ring gap is smaller and the nozzle focal length is longer when the cone angle is bigger with other process parameters invariable. The conclusion is valuable for the coaxial nozzle designing and performance improving.The simulation results are verified by experiments. The effects of process parameters on the height and width of the single-trace are studied. The thin wall parts are manufactured by optimizing the process parameters.
参考文献

[1] 张安峰, 李涤尘, 卢秉恒. 激光直接金属快速成形技术的研究进展[J]. 兵器材料科学与工程, 2007, 30(5): 68~72

    Zhang Anfeng, Li Dichen, Lu Bingheng. Development of research on laser direct metal rapid prototyping technology [J].Ordnance Material Science and Engineering, 2007, 30(5): 68~72

[2] 钟敏霖, 刘文今. 国际激光材料加工研究的主导领域与热点[J]. 中国激光, 2008, 35(11): 1653~1659

    Zhong Minlin, Liu Wenjin. Leading areas and hot topics on global laser materials processing research[J].Chinese J. Lasers, 2008, 35(11): 1653~1659

[3] 杨森, 钟敏霖, 张庆茂 等. 金属零件的激光直接快速制造[J].粉末冶金技术, 2002, 20(4): 234~238

    Yang Sen, Zhong Minlin, Zhang Qingmao et al.. Directly rapid fabrication of metal components by laser cladding [J]. Powder Metallurgy Technology, 2002, 20(4): 234~238

[4] 张魁武. 国外激光熔覆应用和直接熔覆金属零件及梯度材料制造 [J]. 金属热处理, 2002, 27(9): 1~4

    Zhang Kuiwu. Industrial applications of laser clad and laser deposited metal parts and graded materials [J]. Heat Treatment of Metals, 2002, 27(9): 1~4

[5] 杨洗陈, 李会山, 刘运武 等. 激光再制造技术及其工业应用 [J]. 中国表面工程,2003, 16(4): 43~46

    Yang Xichen, Li Huishan, Liu Yunwu et al.. Laser remanufacturing technology and its industrial application[J]. Chinese Surface Engineering, 2003, 16(4): 43~46

[6] 张冬云, 王瑞泽, 赵建哲 等. 激光直接制造金属零件技术的最新进展[J].中国激光,2010, 37(1): 18~25

    Zhang Dongyun, Wang Ruize, Zhao Jianzhe et al.. Lastest advance of laser direct manufacturing of metallic parts [J]. Chinese J. Lasers, 2010, 37(1): 18~25

[7] Lin Jehnming. Numerical simulation of the focused powder streams in coaxial laser cladding [J].J. Material Processing Technology, 2000, 105(1-2): 17~23

[8] 杨洗陈, 雷剑波, 刘运武 等. 激光制造中金属粉末流浓度场的检测 [J]. 中国激光, 2006, 33(7): 993~997

    Yang Xichen, Lei Jianbo, Liu Yunwu et al.. Experimental measurement of metal powder stream concentration field in laser manufacturing [J]. Chinese J.Lasers, 2006, 33(7): 993~997

[9] 栗丽, 杨洗陈, 董哲. 激光熔覆中同轴粉末流温度场的CCD检测[J].中国激光, 2009, 36(9): 2431~2437

    Li Li,Yang Xichen, Dong Zhe. CCD measurement of temperature field of coaxial powder flow in laser cladding [J]. Chinese J. Lasers, 2009, 36(9): 2431~2437

[10] 杨洗陈. 激光制造中同轴粉末流动量和质量传输[J].中国激光,2008, 35(11): 1664~1679

    Yang Xichen. Momentum and mass transferences of coaxial powder stream in laser manufacturing [J]. Chinese J. Lasers, 2008, 35(11): 1664~1679

[11] 张安峰, 周志敏, 李涤尘 等. 同轴送粉喷嘴气固两相流流场的数值模拟 [J]. 西安交通大学学报,2008,42(9): 1169~1173

    Zhang Anfeng, Zhou Zhimin, Li Dichen et al.. Numerical simulation of gas-solid two-phase flow field on coaxial powder nozzle in laser metal direct manufacturing [J]. J. Xi′an Jiaotong University, 2008, 42(9): 1169~1173

[12] Jichang Liu, Lijun Li. Study on cross-section clad profile in coaxial single-pass cladding with a low-power laser[J]. Optics & Laser Technology, 2005, 37(6): 478~482

[13] Li Peng, Ji Shengqin, Zeng Xiaoyan et al.. Direct laser fabrication of thin-walled metal parts under open-loop control [J]. Machine Tools & Manufacture, 2007, 47(6): 996~1002

[14] 黄卫东, 林鑫, 陈静 等. 激光立体成形[M]. 西安:西北工业大学出版社, 2007. 51~53

    Huang Weidong, Lin Xin, Chen Jing et al.. Laser Solid Forming [M]. Xi′an: Northwestern Polytechnical University Press, 2007. 51~53

路桥潘, 张安峰, 李涤尘, 朱刚贤, 同治强, 付伟. 载气式同轴送粉喷嘴的数值模拟及实验研究[J]. 中国激光, 2010, 37(12): 3162. Lu Qiaopan, Zhang Anfeng, Li Dichen, Zhu Gangxian, Tong Zhiqiang, Fu Wei. Numerical Simulation and Experimental Research on Gas-Carrier Coaxial Powder Nozzle[J]. Chinese Journal of Lasers, 2010, 37(12): 3162.

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