以造渣精煉方法控制矽脫氧鋼之脫氧物組成

The Effect of Synthetic Flux on Non-Metallic Inclusions of Sillicon-Deoxidized Steel During Refining Process

周倉榮(Chang-Long Chou) ； 黃紫濤(Chu-Taur Huang) ； 王木樹(Muh-Shuh Wang) ； 陳子明(Tzu-Ming Chen) ； 周聖志(Sun-Ju Chou) ； 謝宏志(Horng-Chih Hsieh) ； 楊柯明(Chi-Ming Young)

《鑛冶：中國鑛冶工程學會會刊》 38卷4期 (1994/12) Pp. 57-63

摘要

在特殊用途的鋼料中控制其非金屬介在物之組成已成為改善其性質的一種重要精煉方法。非金屬介在物之來源除了爐渣及耐火材料在煉鋼製程中混入鋼液外，所謂非金屬介在物之控制主要是指脫氧作業。在本研究中，採用實驗室級之感應爐以及工業使用之盛鋼桶精煉爐進行試驗，而以脫氧劑及爐渣組成對脫氧生成物成份之影響為試驗重點。試片在經金相研磨處理後，以EPMA決定其氧化物組成。研究之結果顯示：為了控制脫氧生成物之組成在可變形之複合氧化物之成份範圍内，必需以低含鋁之矽鐵脫氧，並且在精煉製程中爐渣必需控制在低鹽基度之範圍。

並列摘要

The improvement in steel properties by control of non-metallic inclusions is a very important aspect in the production of steel to meet particular needs. While mechanical entrapment of slags and refractories is important, the key to 'primary' non-metallic inclusions control is deoxidization practice. In this study, both laboratory- scale induction furnace and industrial trial of ladle refining processes were employed. The effects of deoxidant composition and slag composition on the deoxidization products were emphasized in experiment. Selected samples from each heat were examined metallographically and the compositions of the inclusions were determined with an electron probe microanalyser (EPMA). Based on this study, it can be concluded that in order to control the com- position of deoxidization products in the deformable complex oxide's range, it is necessary to use of Si-Fe a low aluminum content and a slag with low basicity during deoxidation practice and refining process.