Apparatus for scraping metal coating on hot-coated metal strips
AssigneeAggust Thyssen-Hutte AG
InventorsFranz-Josef Bellen, Alfons Nikoleizig, Friedrich Meuters
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Abstract
Apparatus for scraping metal coatings of hot-coated metal strips such as when hot-galvanizing a steel strip comprising scraping nozzles located above a metal bath and an X-ray fluorescent measuring device disposed downstream of the nozzles for adjusting the pressure at the nozzles in accordance with the measured thickness of the coating so that a pre-determined coating thickness is obtained. The measuring device is supported in a cooling chamber which allows the measuring device to be brought relatively close to the nozzles and a gaseous cooling medium is blown through further nozzles in the space within the chamber between the strip and the measuring device.
Claims16
In apparatus for scraping metal coatings of hot-coated metal strips, wherein an uncoated strip is passed through a metal coating bath and the thus coated strip is advanced upwardly and passed between scraping nozzles on opposite sides of the strip and measuring means including an x-ray flourescent-measuring device is disposed downstream of the nozzles for measuring the thickness of the coating to control the scraping effect of the nozzles, an improvement comprising a cooling chamber containing said measuring means and disposed at a location relatively close to said nozzles and spaced from said strip, and means for blowing a gaseous cooling medium into the intermediary space within said chamber, between the metal strip and the measuring means.
Dependencies are inferred from the claim text.