Method for water-cooling slabs and cooling water vessel

Details Method for water-cooling slabs and cooling water vessel Method for water-cooling slabs and cooling water vessel

B - Operations, Transporting

22

D

B22D 11/124 (2006.01)

Patent

CA 2254654

A method for water-cooling slabs by dipping and a water vessel used for said method. Slabs cooled by this method yield steel sheets with a minimum of scabs and uneven gloss. Slabs are dipped in water such a way that their larger faces are the upside and underside thereof. Dipping is accompanied by water injection (at a flow rate of 10-150 L/m2~min) toward the underside of slabs. The direction of water injection is perpendicular or oblique to the underside of the slabs. The position of water injection is 30-500 mm away from the underside of the slabs. In the case of water-cooling Cr-containing slabs (Cr 5-30 wt%), the slabs are conditioned such that their surface temperature is 500°C or above before dipping and the dipping lasts until the surface temperature decreases to 400°C or below.

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