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聲測管制造過程產生氣孔產生的原因

聲測管制造過程產生氣孔產生的原因

日期:2020-05-29 10:52:34

聲測管制造過程產生氣孔產生的原因:

(1) 小爐料潮濕、銹蝕嚴重或帶有油污,使鐵水含氣量太多、氧化嚴重;

(2) 出鐵孔、出鐵槽、爐襯、澆包襯未洪干;

(3) 澆注溫度較低,使聲測管氣體來不及上浮和逸出;

(4) 爐料中含鋁量較高,易造成氫氣孔;

(5) 砂型透氣性不好、型砂水分高、含煤粉或有機物較多,使澆注時產生大量氣體且不易排出。
河北新邁實業鋼管
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