Experimental Study on Characteristics of Molten Metal Pneumatic Drop-on-Demand Ejection

LI Yang 1; QI Lehua 1; 2; LUO Jun 1; ZENG Xianghui 1; YANG Fang 1

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Experimental Study on Characteristics of Molten Metal Pneumatic Drop-on-Demand Ejection

更新时间：2025-05-08

- Experimental Study on Characteristics of Molten Metal Pneumatic Drop-on-Demand Ejection
- Vol. 45, Issue 5, Pages: 69-73(2011)
- 作者机构：
  
  集成制造技术教育部重点实验室,西安,710072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH161
- Online First：10 May 2011，
  
  Published：2011
- 稿件说明：
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LI Yang 1, QI Lehua 1, 2, et al. Experimental Study on Characteristics of Molten Metal Pneumatic Drop-on-Demand Ejection[J]. 2011, 45(5): 69-73.
DOI：

LI Yang 1, QI Lehua 1, 2, et al. Experimental Study on Characteristics of Molten Metal Pneumatic Drop-on-Demand Ejection[J]. 2011, 45(5): 69-73. DOI：

摘要

利用自行研制的气动式金属熔滴按需喷射系统进行了单颗熔滴的喷射特性试验研究

并采用动态压力采集系统和频闪拍摄系统测量了产生单颗熔滴时的坩埚腔内气压变化

记录了熔滴成形时刻和成形过程

揭示了气压对熔滴产生的影响规律:在每一次喷射中

产生熔滴的数目随着脉冲宽度的增加而增加; 单颗熔滴的断裂时间受气压的影响; 脉冲宽度在一定范围内改变可以使液体断裂形成单颗熔滴

当供给气压相对较低时

此脉冲宽度的取值范围较广; 在喷射产生单颗熔滴的前提下

改变脉冲宽度将使腔内气压的峰值发生变化

但不能显著改变熔滴尺寸; 熔滴飞行速度与腔内气压峰值成正比关系.

Abstract

To generate single molten droplet by one gas pulse is essential for molten metal pneumatic drop-on-demand(DOD)ejection. This experimental study was carried out to investigate the characteristics of single molten droplet DOD ejection with a proprietary molten metal pneumatic DOD ejection system. The ejection process was examined by dynamic pressure acquisition system and strobe photography system. Based on the molten droplet forming process recorded

the influence of pressure on generating molten droplet was revealed. For each single pulse

the number of generated molten droplets increased with the pulse width. The pinch-off time was affected by the peak pressure in the chamber. The variation of the range of the pulse width for generating single molten droplet with gas pulse pressure was determined

and the range became wider in the case of relatively low supply pressure. The results show that

within the single molten droplet generation window

the size of the molten droplets is not influenced significantly by changing the pulse width but the peak pressure in the chamber decreases with the pulse width; the velocity of the molten droplet decreases proportionally with the decreasing peak pressure.

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Keywords

references

蒋小珊,齐乐华,罗俊,等. 金属微滴产生系统的设计与实现[J]. 中国机械工程, 2009, 20(15): 1775-1778.JIANG Xiaoshan, QI Lehua, LUO Jun, et al. Design and implementation for metal micro-droplet generation system [J]. China Mechanical Engineering, 2009, 20(15): 1775-1778

CHENG Stewart Xu, LI Tiegang, CHANDRA S. Producing molten metal droplets with a pneumatic droplet-on-demand generator [J]. Journal of Materials Processing Technology, 2005, 159(3): 295-302

ZENG Xiang Hui, QI Le Hua, HUANG Hua, et al. Experimental research of pneumatic drop-on-demand high temperature droplet deposition for rapid prototyping [J]. Key Engineering Materials, 2010, 419/420: 405-408

WALLACE D, HAYES D, CHEN T, et al. Ink-jet as a MEMS manufacturing tool [J]. ASME Conference Proceedings, 2007(42657): 1161-1168

CHENG S, CHANDRA S. A pneumatic droplet-on-demand generator [J]. Experiments in Fluids, 2003, 34(6): 755-762

CAO Wenbin, MIYAMOTO Y. Freeform fabrication of aluminum parts by direct deposition of molten aluminum [J]. Journal of Materials Processing Technology, 2006, 173(2): 209-212

杨观,齐乐华,罗俊,等. 均匀液滴喷射成型中微熔滴关键参数在线检测系统[J]. 仪器仪表学报, 2009, 30(3): 590-595.YANG Guan, QI Lehua, LUO Jun, et al. Key parameter measurement system for molten micro-droplet in uniform droplet spay forming [J]. Chinese Journal of Scientific Instrument, 2009,30(3): 590-595

BRUCE C A. Dependence of ink jet dynamics on fluid characteristics [J]. Journal of Research Development, 1976, 20(3): 258-270

WIJSHOFF H. The dynamics of the piezo inkjet printhead operation [J]. Physics Reports, 2010, 491(4/5): 77-177

BOGY D B, TALKE F E. Experimental and theoretical study of wave propagation phenomena in drop-on-demand ink jet devices [J]. IBM Journal of Research Development, 1984, 28(3): 314-321

LE H P. Progress and trends in ink-jet printing technology [J]. Journal of Imaging Science and Technology, 1998, 42(1): 49-62

李彦鹏,王焕然. 低冲击能量液滴与球面碰撞沉积特性的数值研究[J]. 西安交通大学学报, 2009, 43(7): 21-24.LI Yanpeng, Wang Huanran. Numerical study on deposition characteristics of a droplet impinging onto spherical surface with low impact energy [J]. Journal of Xi'an Jiaotong University, 2009,43(7): 21-24

李京龙,李长久.等离子喷涂熔滴的瞬时碰撞压力研究[J]. 西安交通大学学报, 1999, 33(12): 30-34.LI Jinglong, LI Changjiu. Droplet transient impact pressure in plasma spraying [J]. Journal of Xi'an Jiaotong University, 1999, 33(12): 30-34

熔滴喷射沉积制造中重熔过程的研究.西安交通大学学报,2010,44(8):117-121.二氧化碳短路过渡焊电流波形控制模式的研究.西安交通大学学报,2002,36(11 ):1177-1181.二氧化碳焊接弧压智能控制器.西安交通大学学报,2001,35(11):1167-1170.CO2短路过渡焊电压和电流最优匹配的智能控制.西安交通大学学报,2001,35(1):75-78.等离子喷涂熔滴的瞬时碰撞压力研究.西安交通大学学报,1999,33(12): 30-34.等离子喷涂Al2O3涂层内粒子间结合的研究.西安交通大学学报,1994,28(4):1-6.

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