A method for removing soluble ferrous iron from a galvanizing flux solution includes circulating the flux solution through a concentration loop and injecting ozone into the concentration loop, wherein the ozone mixes with the flux solution and reacts with soluble ferrous iron to form insoluble ferric iron in the loop. Flux solution that is substantially free of insoluble ferric iron may be removed from the concentration loop through a filter medium such as a cross-flow microfilter, thereby concentrating the ferric iron in the concentration loop. The ozone may be injected through an eductor that utilizes motive force from a circulation pump, thereby reducing energy consumption and providing rapid mixing and reaction of ozone and ferrous iron.

A method for removing soluble ferrous iron from a galvanizing flux solution includes circulating the flux solution through a concentration loop and injecting ozone into the concentration loop, wherein the ozone mixes with the flux solution and reacts with soluble ferrous iron to form insoluble ferric iron in the loop. Flux solution that is substantially free of insoluble ferric iron may be removed from the concentration loop through a filter medium such as a cross-flow microfilter, thereby concentrating the ferric iron in the concentration loop. The ozone may be injected through an eductor that utilizes motive force from a circulation pump, thereby reducing energy consumption and providing rapid mixing and reaction of ozone and ferrous iron.

An apparatus for the continuous hot dip coating of a metal strip is provided. The apparatus includes a vessel intended to contain a liquid metal bath, a bottom roller and a displacement casing for the metal strip. The casing includes an upper portion and a lower portion. The lower portion includes a pouring box delimiting at least two liquid metal pouring compartments. Each pouring compartment is inwardly delimited by an inner wall including an upper rim. The casing is provided with the pouring box, is rotatable relative to the metal strip around a first rotation axis and the pouring box is rotatable relative to the upper portion of the casing around a second rotation axis. A method for coating the metal sheet is also provided.

The invention relates to the technical field of galvanization of iron-based or iron-containing components, especially steel-based or steel-containing components (steel components), preferably for the automotive or motor vehicle industry, but also for other industrial fields of application (for example for the construction industry, the field of general mechanical engineering, the electrical engineering industry etc.), by means of hot galvanization (hot clip galvanization). More particularly, the invention relates to a method of hot galvanization (hot dip galvanization) and to a plant for this purpose, and additionally to a flux and flux bath usable in this connection and to the respective uses thereof, and additionally also to the products obtainable by the method and/or in the plant (i.e. hot galvanized iron or steel components).

The invention relates to the technical field of galvanization of iron-based or iron-containing components, especially steel-based or steel-containing components (steel components), preferably for the automotive or motor vehicle industry, but also for other industrial fields of application (for example for the construction industry, the field of general mechanical engineering, the electrical engineering industry etc.), by means of hot galvanization (hot clip galvanization). More particularly, the invention relates to a method of hot galvanization (hot dip galvanization) and to a plant for this purpose, and additionally to a flux and flux bath usable in this connection and to the respective uses thereof, and additionally also to the products obtainable by the method and/or in the plant (i.e. hot galvanized iron or steel components).

A flux composition which includes one or more organic compounds including one or more sulfonic acid groups, salts or anhydrides thereof is applied to tin or tin alloy deposits. The flux composition is then homogenized on the tin or tin alloy to inhibit tin or tin alloy oxidation and improve brightness of the tin or tin alloy.

A flux composition which includes one or more organic compounds including one or more sulfonic acid groups, salts or anhydrides thereof is applied to tin or tin alloy deposits. The flux composition is then homogenized on the tin or tin alloy to inhibit tin or tin alloy oxidation and improve brightness of the tin or tin alloy.

The invention relates to a system and a method for hot-dip galvanizing compounds, preferably for mass-production hot-dip galvanizing a plurality of identical or similar components, preferably for batch galvaniztion.

The invention relates to a system and a method for hot-dip galvanizing compounds, preferably for mass-production hot-dip galvanizing a plurality of identical or similar components, preferably for batch galvaniztion.

The present invention relates to a method and an apparatus for treating already galvanized steel parts having a zinc coating, in particular for remanufacturing used galvanized steel parts. The method comprises the following steps: A) checking the galvanized steel part for suitability with a view to remanufacturing; B) preparing the galvanized steel part mechanically and/or chemically; and C) rejuvenating the zinc coating of the steel part.