Effects of substrate geometry on performance of twin-fluid atomizer in metal powder production

Muh Rong Wang, Che Jui Yang, Jian Duen Huang, Tien-Chu Lin, Ming Shen Sheu

研究成果: Paper同行評審

摘要

Uniform and spherical metal powders have been widely used in many industrial applications. This paper investigates the effects of impingement of molten spray on the substrate to control of particle size and size distribution of the metal powder. The idea is to combine the classification process with atomization process in the metal powder production. Result shows that a significant reduction of the particle size occurred when the substrate was placed in the molten spray with different transmission ratio. The mean particle size was lowered to 8.0μm under a low transmission ratio of the spray jet using the ring type substrate. The particle size increased from 8.78μm to 12.67μm as the transmission ratio was increased from 13.92% to 75.80%. The reduction in particle size was due to the effect of the blockage of the substrate. The particle size was further reduced to 6.72μm ∼ 6.98μm when the disk-type substrate was placed in the spray flow field. It was found that the particle size with the disk type substrate because the transmission ratio of the disk type substrate was lower than that of the ring type substrate. The percentage of small particles (i.e., V15-) were higher than 60% and the percentages of V25-45 were lowered to 4.19% and 0.37% when the disk-type substrate was placed at Z=150mm and Z=200mm, respectively. It indicated that almost all of the particles were below 25μm under these conditions. Hence this technique can be used to control of the particle size in the production of the ultra-fine metal powder.

原文English
出版狀態Published - 2006 十二月 1
事件10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006 - Kyoto, Japan
持續時間: 2006 八月 272006 九月 1

Other

Other10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006
國家/地區Japan
城市Kyoto
期間06-08-2706-09-01

All Science Journal Classification (ASJC) codes

  • 表面、塗料和薄膜

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