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dart-like plug
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met.
箭形挡渣塞
(【技】在转炉出钢过程中,该挡渣塞漂浮在出钢口上方的渣钢界面上,能有效地抑制出钢口涡流效应,避免钢流带渣;在出钢临近结束时,炉内余钢水能从该挡渣塞的沟槽中流出,而炉渣则被挡住。)
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