结晶器铜管发黑,有一层黄色附着物,怎么回事?

2025-03-31 14:25:03
推荐回答(4个)
回答1:

铜管外壁面无附着物而整体发黑,系冷却不好,壁面温度过高氧化,严重的会引起铜管变形;如果附有棕黑色铁氧化物,冷却水没加处理剂时管道与总成内部腐蚀物产生的铁氧化物附着;浅黄色厚附着物,特别是在弯月面处最厚,一定是冷却水没加处理剂,硬度和碱度或固体悬浮物主要是钙镁离子等严重超标。或特殊钢种弯月处热流密度大。

回答2:

应该是高温氧化造成的

回答3:

铜管外壁面无附着物而整体发黑,系冷却不好,壁面温度过高氧化,严重的会引起铜管变形;如果附有棕黑色铁氧化物,冷却水没加处理剂时管道与总成内部腐蚀物产生的铁氧化物附着;浅黄色厚附着物,特别是在弯月面处最厚,一定是冷却水没加处理剂,硬度和碱度或固体悬浮物主要是钙镁离子等严重超标。或特殊钢种弯月处热流密度大。

回答4:

氧化....

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