发明名称 METHOD FOR CONTROLLING DEW POINT OF REDUCTION FURNACE, AND REDUCTION FURNACE
摘要 Provided are a method for controlling a dew point in a reducing furnace and a reducing furnace in which, even in the case of galvanizing Si-added steel, coating adhesion can be secured, alloying treatment can be performed without increasing the alloying temperature excessively, and it is possible to obtain a hot-dip galvanized steel sheet having an excellent coating appearance. When a steel sheet is subjected to annealing and hot-dip galvanizing treatment using continuous hot-dip galvanizing equipment including at least a radiant tube-type reducing furnace, a mixed gas of a dry gas and a humidified gas by a humidifying device having a water vapor permeable membrane is used as a gas to be supplied into the reducing furnace. The mixed gas is supplied into the reducing furnace, thereby controlling the dew point in the reducing furnace.
申请公布号 EP3112493(A1) 申请公布日期 2017.01.04
申请号 EP20150755331 申请日期 2015.02.18
申请人 JFE Steel Corporation 发明人 TAKEDA, Gentaro;TAKAHASHI, Hideyuki;MIYAKE, Masaru;MAKIMIZU, Yoichi;SUZUKI, Yoshitsugu
分类号 C23C2/02;C21D1/26;C21D9/00;C21D9/46;C21D9/56;C23C2/28;C23C2/40;F27D7/02 主分类号 C23C2/02
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