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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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