鋁脫氧鋼煉鑄過程介在物與鋼液清淨度研究

The Study of Inclusion and cleanness of AI-killed Steel in Steelmaking Process

黃溫杰(W.J. Huang) ； 黃紫濤(C.T. Huang) ； 張顧齡(K.L. Chang) ； 林村禾(T.H. Lin)

《鑛冶：中國鑛冶工程學會會刊》 51卷3期 (2007/09) Pp. 53-57

https://doi.org/10.30069/MM.200709_51(3).0005

摘要

低碳鋁脫氧鋼種是中鋼主力產品之一，產量大且多製程生產。本研究以塊狀取樣器分別在於RH處理後、攪拌站、轉爐後等不同脫氧製程進行鋼液取樣，並應用酸溶法萃取樣品中介在物，來觀察介在物型態於製程中的變化。實驗結果發現：（1）在RH脫氧的介在物為2-D樹枝形、長條形以及3-D的珊瑚形等；（2）攪拌站脫氧的介在物為圓球狀、多角狀和棒狀等；（3）轉爐後脫氧的介在物為彎曲長棒狀及一些小型多角形介在物。（於澆注站的介在物，由於上浮的關係，多為小於5μm以下，其中RH製程為多角形，攪拌站製程較接近橢圓形；而轉爐後製程為多角形和似球形，且平均顆粒較大。）

關鍵字

鋁脫氧鋼 ； 介在物 ； 形狀 ； 酸溶法

並列摘要

Low carbon AI-killed steel is one of the major products in CSC. A multiple production processing is required to produce in a large quatity. In this study, a bomb sample was used to take AI-killed a liquid steel sample after RH treatment, at the stirring station, and after-BOF stage respectively. An acid solution method was used to get inclusion inside steel samples for absening the inclusion shape in different processes. New paragraph has been observed that (1) inclusions were two-dimension dentritic, rod and three-dimension coral shape in RH stage; (2) globular, angular and rod shape in stirring stage; and (3) large curved rod and small angular shape in after-BOF stage. The particles were mostly less than 5μm due to floation of large inclusions. These particles had different shape due to various refining process in continuous casting stage.

並列關鍵字

AI-killed steel ； inclusion ； shape ； acid method