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| Effect of Refining Process on Purity of PipeLine Steel |
| LI Hong1,CHANG Guihua1,SUN Qun2,CHEN Benwen1,WANG Rong2 |
| 1. Technology Center, Angang Steel Company Limited, Anshan 114009, Liaoning, China; 2. No.2 Steelmaking Plant, Angang Steel Company Limited, Anshan 114001, Liaoning, China |
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Abstract The effects of LDLFCC and LDANSOBCC refining processes on the purity of pipeline steel were investigated.The contents of oxygen,nitrogen and inclusions during refining were studied quantitatively by metallographic and chemical analysis. The results indicate that the molten steels refined by LF and ANSOB are of same cleanness, but the product cost can be reduced by use of LDANSOBCC. Blowing argon is a main factor for removing inclusions in refining process. The contents of oxygen, nitrogen and inclusions can be reduced to a minimum, when the refining time reaches 40 minutes.
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Received: 01 January 1900
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2007, Vol. 42 