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長(zhǎng)水口又稱(chēng)保護(hù)套管，用于鋼包和中間包之間鋼流的保護(hù)澆注，可以防止鋼液二次氧化和從周?chē)�空氣中吸收氮，同時(shí)，也避免了敞開(kāi)澆注的卷渣問(wèn)題。本公司生產(chǎn)的免烘烤型鋁碳長(zhǎng)水口具有抗熱震性高，抗沖刷和抗侵蝕能力強(qiáng)等優(yōu)點(diǎn)，性能達(dá)到或超過(guò)國(guó)際同類(lèi)產(chǎn)品的先進(jìn)水平。

The long nozzle is also called guard casing , beingused to shroud the casting stream between ladle andtundish , having the function of reducing reoxidationand nitrogen absorption from the ambient air andavoding slag rollcaused by open casting . The Al , O-Cbasedno baking long nozzle produced by the companyIs characterized by high thermal shock resistance , andhigh antiscour and erosiln resistance , it s performancecomes up to or surpasses advanced Oworld level .