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发表于 2010-6-8 06:38:06
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The secondary refining technology is a improve product quality, reduce the production cost of advanced technology, modern steel-making process is an important and indispensable tache, chemical composition and accurate temperature control, slag inclusion, eliminate reduction from S, Ca, form control, remove inclusions, O H C, S, impurity, vacuum deairing with metallurgical functions, etc. Only strengthen the function of each item, can play the advantage of secondary refining, produce the high quality pure material. |
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