Experimental Study to Improve the Castability of Aluminum Killed Cold Heading Steel. Issue 8 (18th February 2013)

• Record Type: Journal Article
• Authors: Jun, Yang; Bo‐Tao, Chen; Wei, Tang; Fan‐Zheng, Zeng; Gang, Yu; Feng, Shen
• Is Part Of: Steel research international. Volume 84:Issue 8(2013:Aug.)
• Page Start: 703
• Page End: 712
• Publication Date: 2013-02-18
• Subjects: Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.201200246
• Languages: English
• ISSNs: 1611-3683

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Experimental study on the LF refining of aluminum killed cold heading steel shows that calcium content in the molten steel increased to about 0.0010% at the end of refining, and the aluminum deoxized products were transformed from Al₂O₃ to the complex inclusions CaO–MgO–Al₂O₃ with lower melting point by the high basicity, high Al₂O₃, and strong deoxidizing slag. The inclusions are in liquid state and can be easily floated up during LF refining and continuous casting. The total oxygen content of the steel falls to about 0.0020%. The experimental technology uses only 50 m calcium wire to the 80‐t heat or even without calcium treatment. As compared to the traditional technology with higher amount of calcium for treatment, which forms CaS and CaO–MgO–Al₂O₃ inclusions with high melting point, the experimental technology improves the castability and reduces the manufacturing cost.</p> </abstract>