Method and apparatus for optimizing the reduction of the size of spangles on a galvanised steel sheet

摘要

The invention relates to a method for optimizing the solidification of zinc on a strip (2) of steel under crystallization seeds consist of the action of zinc in fine powder, which are projected by a transport fluid to the inside a box (1) on both sides of the web (2), characterized in that the strip temperature is measured at the outlet of the box (1) and this temperature is maintained at a value optimum by controlling the pulsed air flow in the chamber as a function of the difference between the measurement obtained and the optimum temperature.