US 11,850,634 B2
Method and device for rinsing an overflow chamber at the bath-side end of a snout of a hot-dip coating device
Lutz Kümmel, Jüchen (DE); Jegor Bergen, Rheinberg (DE); Jean-Pierre Crutzen, Chaudfontaine (BE); and Otto Schanderl, Salzgitter (DE)
Assigned to SMS group GmbH, Düsseldorf (DE); and Fa. Severstal, Cherepovets (RU)
Appl. No. 17/609,697
Filed by SMS group GmbH, Düsseldorf (DE); and Fa. Severstal, Cherepovets (RU)
PCT Filed Jul. 23, 2019, PCT No. PCT/EP2019/069811
§ 371(c)(1), (2) Date Nov. 8, 2021,
PCT Pub. No. WO2020/224792, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10 2019 206 609.7 (DE), filed on May 8, 2019.
Prior Publication US 2022/0213582 A1, Jul. 7, 2022
Int. Cl. B08B 9/08 (2006.01); C23C 2/40 (2006.01); C23C 2/00 (2006.01)
CPC B08B 9/08 (2013.01) [C23C 2/00 (2013.01); C23C 2/004 (2022.08); C23C 2/00344 (2022.08); C23C 2/325 (2022.08); C23C 2/40 (2013.01); C23C 2/50 (2022.08); B08B 2209/08 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for rinsing an overflow chamber (132) at a bath-side end of a snout (130) of a device (100) for hot-dip coating a metal strip (200), wherein the snout is used to guide the metal strip in a protective gas atmosphere before the metal strip (200) is coated with a metal melt (120), comprising the steps of:
carrying out a rinsing cycle in the overflow chamber (132) by
feeding the metal melt (120) from a molten bath into the overflow chamber (132); and, at the same time,
pumping the metal melt (120) out of the overflow chamber into the molten bath with a suction pump (150);
wherein the snout (130) with the overflow chamber (132) is retracted from the molten bath at least to such an extent that no metal melt can flow over an overflow edge (134) in an interior of the snout (130) into the overflow chamber, and
wherein the rinsing cycle is carried out even when the snout has been retracted from the molten bath by feeding the metal melt from the molten bath to the overflow chamber (132) with a delivery pump (160), and
wherein the snout (130) is entirely retracted from the molten bath.