公开(公告)号：US20230193442A1

公开(公告)日：2023-06-22

申请号：US16764234

申请日：2018-11-06

Applicant: SMS GROUP GMBH

Inventor： Frank MASCHLER ,  Lutz KUEMMEL ,  Jean-Pierre CRUTZEN

IPC: C23C2/02 ,  C21D9/56 ,  C21D1/76

CPC classification number: C23C2/02 ,  C21D9/561 ,  C21D1/76

Abstract: Method for the preoxidation of high-strength strip steel. The invention relates to an improved method for the preoxidation of high-strength strip steel in a reaction chamber arranged in a furnace chamber. The reaction chamber is sealed at a strip entrance and a strip exit against gas exchange between the furnace chamber and the reaction chamber, and a gas that forms an oxidizing atmosphere in the reaction chamber is introduced, and the gas is continuously circulated within the reaction chamber

公开(公告)号：US20220213582A1

公开(公告)日：2022-07-07

申请号：US17609697

申请日：2019-07-23

Applicant: SMS group GmbH ,  Fa. Severstal

Inventor： Lutz KÜMMEL ,  Jegor BERGEN ,  Jean-Pierre CRUTZEN ,  Otto SCHANDERL

IPC: C23C2/00 ,  C23C2/40 ,  B08B9/08

Abstract: A method for rinsing an overflow chamber at the bath-side end of a snout of a device for hot-dip coating a metal strip is presented. The snout guides the metal strip in a protective gas atmosphere before the metal strip is coated with a metal melt. A rinsing cycle is carried out in the overflow chamber of the snout by feeding metal melt from the molten bath into the overflow chamber and at the same time, sucking and pumping said melt out of the overflow chamber back into the molten bath. This rinsing cycle can be performed even when the snout has been retracted from the melt by supplying the melt from the molten bath to the overflow chamber with a delivery pump.