-
公开(公告)号：US12031192B2
公开(公告)日：2024-07-09
申请号：US18332752
申请日：2023-06-12
IPC分类号： C21D9/46 , C21D1/26 , C21D9/56 , C22C38/02 , C23C2/00 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
CPC分类号： C21D9/46 , C21D1/26 , C21D9/561 , C21D9/562 , C22C38/02 , C23C2/0035 , C23C2/0038 , C23C2/004 , C23C2/0224 , C23C2/06 , C23C2/28 , C23C2/40
摘要： Provided is a continuous hot-dip galvanizing apparatus comprising: a vertical annealing furnace having heating, soaking zone, and cooling zones therein; and a hot-dip galvanizing line downstream of the cooling zone. The heating, soaking, and cooling zones each have, in its upper portion, at least one upper hearth roll and, in its lower portion, at least one lower hearth roll. The soaking zone has a first and second humidified gas supply ports to supply a humidified gas having a dew point of 10° C. to 30° C. to the soaking zone. The first and second humidified gas supply ports are 1.0 m to 5.0 m lower than the center of the lower and upper hearth rolls, respectively, and overlap the steel sheet. The first humidified gas supply port is provided only for an ascending pass and the second humidified gas supply port is provided only for a descending pass.
-
2.发明授权公开(公告)号：US11718889B2
公开(公告)日：2023-08-08
申请号：US16955041
申请日：2018-11-20
摘要： A method for producing a hot-dip galvanized steel sheet includes supplying humidified gas to the soaking zone 12 in a manner such that: in passes in which the steel sheet moves upward, the humidified gas is supplied from first humidified gas supply ports 40A to 40E provided at positions higher by 1.0 m or more and 5.0 m or less than the centers of lower hearth rolls 54 and overlapping the steel sheet in the passes when viewed from the side of the soaking zone; and in passes in which the steel sheet moves downward, the humidified gas is supplied from second humidified gas supply ports 42A to 42E provided at positions lower by 1.0 m or more and 5.0 m or less than the centers of the upper hearth rolls 52 and overlapping the steel sheet in the passes when viewed from the side of the soaking zone.
-
搜索结果
2 条记录 (耗时 0.01 秒)
