內混式噴嘴金屬粉末噴霧製程最佳化研究

Optimization of Metal Powder Production by Gas Atomization Processes with Internal-Mixing Mechanism

王覺寬(Muh-Rong Wang) ； 賴等參(Teng-Sun Lai) ； 林天柱(Tien-Chu Lin) ； 邱俊賢(Chun-Hsien Chiu) ； 楊哲睿(Che-Jui Yang) ； 徐明生(Ming-Shen Sheu)

《中國航空太空學會學刊》 37卷2期 (2005/06) Pp. 153-161

https://doi.org/10.6124/TAASRC.200506_37(2).06

摘要

本文探討以內混式氣霧法生產超微粒金屬粉末噴霧製程之最佳化設計參數，根據田口式L18(2^1x3^7)實驗計畫法，採取8個設計參數進行實驗，以決定錫粉噴霧製程中生產15微米以下金屬粉末之最佳化組合。最佳化結果顯示，在8個設計參數中以霧化氣體種類、熔湯進料口徑、噴嘴出口大小、熔湯壓力及金屬材料種類等五種參數爲重要參數。18種實驗之品質特性平均值爲32.86，標準差平均值爲2.67，S/N比平均值爲29.70。以最佳化之設計參數進行驗證實驗，S/N比提高6.97，品質特性則進一步提高至56.9，即所生產之金屬粉末中有56.9%落在0~15微米範圍，優於傳統外混式氣霧法噴霧製程。

關鍵字

金屬粉末 ； 噴霧製程 ； 田口式方法 ； 內混式噴嘴

並列摘要

This paper investigates the production of the extra-fine metal powder by gas atomization processes with internal mixing mechanism. Optimization of the production process is performed by the L18 (2^1x3^7) scheme of Taguchi method. The goal is to produce the metal powder with particle size less than 15μm. Optimization analysis shows that the atomization gas, the melt inlet diameter, the nozzle outlet diameter, the melt injection pressure and the materials are the control parameters among the eight design factors. Results of the eighteen experiments show that the mean quality is 32.86 with standard deviation 2.67 and S/N ratio 29.7. Confirmation experiment with optimization design indicates that the accumulative volume of the powder within 0~15μm is 56.9%. That is, more than half of the powder is within extra-fine range.

並列關鍵字

Metal powder ； Gas atomization ； Taguchi method ； Internalmixing