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1.发明授权Means for reclaiming galvanizing quality zinc alloy from continuous galvanizing line top dross 失效从连续镀锌线顶部浮渣回收镀锌质量锌合金的方法
公开(公告)号：US4269398A
公开(公告)日：1981-05-26
申请号：US91551
申请日：1979-11-05
申请人： John C. Hogan , Alan F. Gibson
发明人： John C. Hogan , Alan F. Gibson
CPC分类号： C22B7/04 , C22B19/30 , F27B14/06 , F27D2099/0008 , Y02P10/212
摘要： Means and a method for reclaiming galvanizing quality zinc alloy from the top dross of a continuous galvanizing line. A dross furnace is provided having front, rear and side walls and a hearth sloping from the rear wall toward the front wall. The front wall is provided with one or more tap holes or a full width slot so sized as to permit the passage of molten zinc alloy therethrough while retaining the resulting sponge or slag. The dross furnace is located with its front wall overhanging the coating pot of the continuous galvanizing line. The dross furnace is maintained at a temperature of from about 460.degree. C. to about 850.degree. C. and is charged with the top dross from the coating pot. The top dross has a residence time in the dross furnace of up to about two hours. The reclaimed galvanizing quality zinc alloy, at yields from about 50% to about 70% based upon the top dross treated, flows directly back into the coating pot. The resulting slag or sponge is removed from the dross furnace which is recharged with top dross.
摘要翻译： 从连续镀锌生产线的顶部渣滓回收镀锌质量锌合金的方法和方法。 炉渣具有前壁，后壁和侧壁以及从后壁向前壁倾斜的炉床。 前壁设置有一个或多个排水孔或全宽度槽，其尺寸适于允许熔融锌合金通过，同时保持所得的海绵或炉渣。 排渣炉的前壁位于连续镀锌生产线的涂层上。 渣槽保持在约460℃至约850℃的温度下，并从涂覆罐中装入顶部渣滓。 顶部渣滓在渣滓炉中停留时间长达约2小时。 回收镀锌质量的锌合金以处理的顶渣为基准的约50％至约70％的产率直接返回到涂覆罐中。 将所得到的炉渣或海绵从与顶渣混合的炉渣中除去。
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2.发明授权Method for reclaiming galvanizing quality zinc alloy from continuous galvanizing line top dross 失效从连续镀锌线顶渣回收镀锌质量锌合金的方法
公开(公告)号：US4221591A
公开(公告)日：1980-09-09
申请号：US14127
申请日：1979-02-22
申请人： John C. Hogan , Alan F. Gibson
发明人： John C. Hogan , Alan F. Gibson
CPC分类号： C22B7/04 , C22B19/30 , F27D2099/0008 , Y02P10/212
摘要： Means and a method for reclaiming galvanizing quality zinc alloy from the top dross of a continuous galvanizing line. A dross furnace is provided having front, rear and side walls and a hearth sloping from the rear wall toward the front wall. The front wall is provided with one or more tap holes or a full width slot so sized as to permit the passage of molten zinc alloy therethrough while retaining the resulting sponge or slag. The dross furnace is located with its front wall overhanging the coating pot of the continuous galvanizing line. The dross furnace is maintained at a temperature of from about 460.degree. C. to about 850.degree. C. and is charged with the top dross from the coating pot. The top dross has a residence time in the dross furnace of up to about two hours. The reclaimed galvanizing quality zinc alloy, at yields from about 50% to about 70% based upon the top dross treated, flows directly back into the coating pot. The resulting slag or sponge is removed from the dross furnace which is recharged with top dross.
摘要翻译： 从连续镀锌生产线的顶部渣滓回收镀锌质量锌合金的方法和方法。 炉渣具有前壁，后壁和侧壁以及从后壁向前壁倾斜的炉床。 前壁设置有一个或多个排水孔或全宽度槽，其尺寸适于允许熔融锌合金通过，同时保持所得的海绵或炉渣。 排渣炉的前壁位于连续镀锌生产线的涂层上。 渣槽保持在约460℃至约850℃的温度下，并从涂覆罐中装入顶部渣滓。 顶部渣滓在渣滓炉中停留时间长达约2小时。 回收镀锌质量的锌合金以处理的顶渣为基准的约50％至约70％的产率直接返回到涂覆罐中。 将所得到的炉渣或海绵从与顶渣混合的炉渣中除去。
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公开(公告)号：US5066549A
公开(公告)日：1991-11-19
申请号：US275147
申请日：1988-11-22
IPC分类号： C23C2/12
CPC分类号： C23C2/12 , Y10T428/12757 , Y10T428/12979
摘要： Continuously hot dip aluminum coated ferritic chromium alloy steel strip. After the steel has been given a pretreatment to remove surface contaminants, the steel is protected in a hydrogen atmosphere until it is passed into the molten aluminum coating metal. The coating metal readily wets the steel surface to prevent uncoated areas or pin holes in the coating layer.
摘要翻译： 连续热浸镀铝铁素体铬合金钢带。 在钢被给予预处理以去除表面污染物之后，钢在氢气气氛中被保护，直到其进入熔融铝涂层金属。 涂层金属容易地润湿钢表面，以防止涂层中未涂覆的区域或针孔。
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公开(公告)号：US4675214A
公开(公告)日：1987-06-23
申请号：US865238
申请日：1986-05-20
CPC分类号： C23C2/12
摘要： Continuously hot dip aluminum coated ferritic chromium alloy steel strip. After the steel has been given a pretreatment to remove surface contaminants, the steel is protected in a hydrogen atmosphere until it is passed into the molten aluminum coating metal. The coating metal readily wets the steel surface to prevent uncoated areas or pin holes in the coating layer.
摘要翻译： 连续热浸镀铝铁素体铬合金钢带。 在钢被给予预处理以去除表面污染物之后，钢在氢气气氛中被保护，直到其进入熔融铝涂层金属。 涂层金属容易地润湿钢表面，以防止涂层中未涂覆的区域或针孔。
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5.发明授权Finishing method and means for conventional hot-dip coating of a ferrous base metal strip with a molten coating metal using conventional finishing rolls 失效使用常规精轧辊的熔融涂覆金属的铁基金属带的常规热浸涂覆的整理方法和装置
公开(公告)号：US4444814A
公开(公告)日：1984-04-24
申请号：US387375
申请日：1982-06-11
摘要： A finishing method and apparatus for use in conventional hot-dip coating of the type wherein a ferrous base metal strip, having been appropriately pretreated so as to be at or near the proper coating temperature and so as to have its surfaces free of oxides, is cause to pass beneath the surface of a bath of molten coating metal, exiting the bath between conventional finishing rolls. The method comprises the steps of providing an enclosure which overlies at least the coating metal meniscus areas created between the finishing rolls and the strip, and maintaining within the enclosure an inert or non-oxidizing atmosphere to shroud the meniscus areas. The apparatus comprises the above mentioned enclosure with an appropriate system to provide and maintain the inert or non-oxidizing atmosphere therein.
摘要翻译： 用于这种类型的常规热浸涂层的精加工方法和装置，其中已经适当地预处理以达到或接近适当涂层温度并且使其表面没有氧化物的铁基金属带是 导致在熔融涂覆金属浴的表面之下通过，在常规精轧辊之间离开浴槽。 该方法包括以下步骤：提供至少覆盖在精轧辊和带之间产生的涂覆金属弯液面区域的外壳，并且在外壳内保持惰性或非氧化气氛以覆盖弯月面区域。 该装置包括具有适当系统的上述外壳，以提供和保持其中的惰性或非氧化气氛。
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公开(公告)号：US5015341A
公开(公告)日：1991-05-14
申请号：US228645
申请日：1988-08-05
摘要： Galvannealed electroplated steel strip. The strip is heated to an alloying temperature of at least about 427.degree. C. using an induction coil operated at a frequency to produce an eddy current penetration depth of one-half the strip thickness. The diffusion temperature and time are controlled to minimize the formation of brittle gamma alloy phases in the zinc/iron alloy coating.
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公开(公告)号：US4123292A
公开(公告)日：1978-10-31
申请号：US753623
申请日：1976-12-23
申请人： Alan F. Gibson , Marvin B. Pierson
发明人： Alan F. Gibson , Marvin B. Pierson
CPC分类号： C23C2/38
摘要： A method of preparing the surfaces of steel strip and sheet stock for fluxless hot dip metallic coating, comprising the steps of passing the stock through a first heating section under conditions which form a visible iron oxide layer on the stock surfaces within the color range of dark straw through blue, continuing the heating of the stock in a second heating section isolated from the first heating section in an atmosphere containing less than 5% hydrogen by volume, thereby preserving the oxide layer, and cooling the stock approximately to the temperature of the molten coating metal in a cooling zone containing a reducing atmosphere comprising at least 10% hydrogen by volume, whereby to reduce the oxide layer completely to a metallic iron surface wettable by the coating metal. The radiant energy absorptivity of the steel stock is increased by the formation and preservation of the iron oxide layer in the first and second heating sections.
摘要翻译： 一种制备用于无金属热浸金属涂层的钢带和片材的表面的方法，包括以下步骤：在黑暗的颜色范围内在原料表面形成可见氧化铁层的条件下通过第一加热部分 秸秆通过蓝色，在包含小于5体积％的氢气的气氛中，在与第一加热部分隔离的第二加热部分继续加热原料，从而保留氧化物层，并将原料冷却至熔融 在含有包含至少10体积％氢的还原气氛的冷却区中涂覆金属，从而将氧化物层完全还原成可被涂层金属润湿的金属铁表面。 通过在第一和第二加热段中氧化铁层的形成和保存来增加钢坯的辐射能吸收性。
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8.发明授权Method and apparatus for producing one-side electroplated steel strip with enhanced phosphatability 失效用于生产具有增强的磷酸盐性的单面电镀钢带的方法和装置
公开(公告)号：US4808278A
公开(公告)日：1989-02-28
申请号：US144216
申请日：1988-01-15
CPC分类号： C25D7/0614
摘要： Producing one-side zinc electroplated strip having enhanced phosphating characteristics. Prior to electroplating, the non-electroplated side of the steel strip is cathodically pickled. Cathodic pickling minimizes staining and etching to the non-electroplated strip surface by the zinc electrolyte during electroplating of the opposite strip surface.
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公开(公告)号：US4800135A
公开(公告)日：1989-01-24
申请号：US016920
申请日：1987-02-20
CPC分类号： C23C2/12 , Y10T428/12757 , Y10T428/12951 , Y10T428/12979
摘要： Continuously hot dip aluminum coated ferritic chromium alloy steel strip. After the steel has been given a pretreatment to remove surface contaminants, the steel is protected in a hydrogen atmosphere until it is passed into the molten aluminum coating metal. The coating metal readily wets the steel surface to prevent uncoated areas or pin holes in the coating layer.
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10.发明授权Method of treating steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating 失效在含硫气氛中处理钢带和片材表面的金属涂层方法
公开(公告)号：US4123291A
公开(公告)日：1978-10-31
申请号：US753622
申请日：1976-12-23
CPC分类号： C23C2/38
摘要： A method of preparing the surfaces of steel strip and sheet stock for fluxless hot dip coating with molten metal by passing the stock through a first heating zone containing the hot gaseous products of combustion of a sulfur-bearing gaseous fuel with air, continuing the heating in a further heating zone, and cooling the stock approximately to the temperature of the molten coating metal in a reducing atmosphere. The radiant energy absorptivity of the stock is increased by forming a visible sulfur and oxygen rich layer thereon in the first heating zone and preserving the layer throughout the further heating zone. Coke oven gas may be used as fuel in the first heating zone.
摘要翻译： 通过使原料通过含有含硫气体燃料的热气态产物与空气的第一加热区，制备用于无熔剂热熔浸渍的钢带和片材的表面的方法，该方法继续加热 进一步加热区，并且在还原气氛中将原料冷却至熔融涂覆金属的温度。 通过在第一加热区中在其上形成可见的硫和富氧层并在整个另外的加热区中保留层来增加原料的辐射能量吸收性。 焦炉煤气可以用作第一加热区的燃料。
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