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1.发明申请METHOD AND DEVICE FOR AVOIDING SURFACE DEFECTS CAUSED BY ZINC DUST IN A CONTINUOUS STRIP GALVANISING PROCESS 有权用于在连续条纹加工过程中避免由ZINC粉尘引起的表面缺陷的方法和装置公开(公告)号：US20150167138A1
公开(公告)日：2015-06-18
申请号：US14412929
申请日：2013-07-05
CPC分类号： C23C2/02 , B05D3/002 , B05D3/0236 , C21D1/26 , C21D9/52 , C21D9/561 , C23C2/003 , C23C2/06 , C23C2/40
摘要： The invention relates to a method and to an apparatus for avoiding surface defects, which are caused by zinc dust, on galvanized metal strip in continuous strip galvanization, in which metal strip which is to be galvanized and is heated in a continuous annealing furnace is moved through a furnace pipe in protective furnace gas and is immersed into a zinc bath, wherein the furnace pipe is provided with injection openings via which the front side and the rear side of the metal strip can be acted upon with protective furnace gas, and wherein extraction openings for extracting protective furnace gas loaded with zinc vapour are arranged adjacent to the injection openings. The apparatus according to the invention is characterized in that a multiplicity of the injection openings are configured and arranged in the furnace pipe in such a manner that the protective furnace gas streaming out of said injection openings is directed onto that surface of the metal strip which faces the respective injection opening with an angle of impact within the range of 70° to 110°, wherein the distance between the respective injection opening and at least one extraction opening assigned thereto is selected in such a manner that, at a predetermined or predeterminable flow velocity of the protective furnace gas emerging from the respective injection opening, an entraining of protective furnace gas, which occurs during movement of the metal strip, in the direction of the zinc bath is opposed.
摘要翻译： 本发明涉及一种在连续带镀锌中镀锌金属带上避免由锌粉引起的表面缺陷的方法和装置，其中在连续退火炉中被镀锌和加热的金属带移动 通过保护炉气体中的炉管并浸入锌浴中，其中炉管设有注入开口，金属带的前侧和后侧可以用保护炉气体作用，并且其中提取 用于提取负载有锌蒸气的保护炉气体的开口设置在喷射口附近。 根据本发明的装置的特征在于，多个喷射孔被构造和布置在炉管中，使得从所述喷射开口流出的保护炉气体被引导到面对的金属带的表面上 相应的喷射开口，其冲击角度在70°至110°的范围内，其中相应的喷射开口和分配给其的至少一个提取开口之间的距离选择为以预定或可预定的流速 从相应的注射开口出来的保护炉气体，在金属带移动期间沿着锌浴的方向夹带保护性炉气。
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公开(公告)号：US09745653B2
公开(公告)日：2017-08-29
申请号：US14787216
申请日：2014-04-04
摘要： The invention relates to an apparatus for the continuous hot-dip coating of metal strip, preferably steel strip, comprising a melting bath vessel, a snout, which opens in the melting bath vessel, for introducing a metal strip, which is heated in a continuous furnace, into the melting bath in protective gas, and a deflecting roller, which is arranged in the melting bath vessel, for deflecting the metal strip, which is entering the melting bath, in a direction pointing out of the melting bath, wherein that end of the snout which is dipped into the melting bath has at least one runoff chamber which is bounded inward by an overflow wall, downward by a floor and outward by the wall of the snout, wherein the overflow edge of the overflow wall lies at least in sections below the melting bath surface, and wherein a suction line with a pump is connected to the runoff chamber, characterized in that the runoff chamber is provided with at least one through opening through which liquid molten metal can flow out of the melting bath into the runoff chamber, wherein the at least one through opening is arranged lower than the overflow edge.
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公开(公告)号：US09695496B2
公开(公告)日：2017-07-04
申请号：US14412929
申请日：2013-07-05
IPC分类号： B05D3/02 , C23C2/02 , C21D9/56 , C23C2/00 , C23C2/06 , C23C2/40 , C21D1/26 , C21D9/52 , B05D3/00
CPC分类号： C23C2/02 , B05D3/002 , B05D3/0236 , C21D1/26 , C21D9/52 , C21D9/561 , C23C2/003 , C23C2/06 , C23C2/40
摘要： The invention relates to a method and to an apparatus for avoiding surface defects, which are caused by zinc dust, on galvanized metal strip in continuous strip galvanization, in which metal strip which is to be galvanized and is heated in a continuous annealing furnace is moved through a furnace pipe in protective furnace gas and is immersed into a zinc bath, wherein the furnace pipe is provided with injection openings via which the front side and the rear side of the metal strip can be acted upon with protective furnace gas, and wherein extraction openings for extracting protective furnace gas loaded with zinc vapor are arranged adjacent to the injection openings. The apparatus according to the invention is characterized in that a multiplicity of the injection openings are configured and arranged in the furnace pipe in such a manner that the protective furnace gas streaming out of said injection openings is directed onto that surface of the metal strip which faces the respective injection opening with an angle of impact within the range of 70° to 110°, wherein the distance between the respective injection opening and at least one extraction opening assigned thereto is selected in such a manner that, at a predetermined or predeterminable flow velocity of the protective furnace gas emerging from the respective injection opening, an entraining of protective furnace gas, which occurs during movement of the metal strip, in the direction of the zinc bath is opposed.
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