| 摘要 |
<p>The invention relates to a method for producing a metal strip having an anti-corrosion metal coating. Said method comprises the following steps: the metal strip is passed through a melt; the coated metal strip is then dried by means of nozzles projecting a gas on either side of the strip, the gas having an oxidising power lower than that of an atmosphere consisting of 4% vol. of oxygen and 96% vol. of nitrogen; and the strip is then passed through a confinement region defined, in the bottom part, by the drying line and upper faces of the drying nozzles, in the top part, by the upper part of two confinement boxes placed either side of the strip, just above the nozzles, and at least 10 cm high in relation to the drying line, and on the sides, by lateral parts of the confinement boxes, the atmosphere in the confinement region having an oxidising power lower than that of an atmosphere consisting of 4% vol. of oxygen and 96% vol. of nitrogen, and higher than that of an atmosphere consisting of 0.15% vol. of oxygen and 99.85% vol. of nitrogen. The invention also relates to a coating installation and a confined drying device (10; 20; 30) for implementing said method.</p> |
