公开(公告)号：US12208442B2

公开(公告)日：2025-01-28

申请号：US18025308

申请日：2021-08-31

Applicant: SMS group GmbH

Inventor： Dirk Letzel ,  Uwe Plociennik ,  Volker Mers ,  Axel Stavenow ,  Ina Hüllen ,  Harminder Singh ,  Ingo OlgeMöller

IPC: B22D11/124 ,  B22D11/22

Abstract: The invention relates to a method and to a spraying apparatus (10) for the thermal surface treatment of a metal product (1). The metal product (1) is conveyed in a transport direction (T) through a treatment section (12) of a spraying apparatus (10) equipped with cooling nozzles (16) while cooling fluid is discharged through the cooling nozzles (16) of the spraying apparatus (10) onto the surfaces of the metal product (1), wherein the metal product (1) has—viewed in the transport direction (T) of the metal product (1)—a front section (4) and a trailing rear section (5). The cooling of the surfaces of the metal product (1) within the spraying apparatus (10) occurs in such a manner that the rear section (5) of the metal product (1) is cooled more significantly than its front section (4). It is thereby achieved that an essentially uniform ferrite content forms in the material of the metal product (1) at a predetermined depth of the same over a longitudinal area extending between the front section (4) and the rear section (5).

公开(公告)号：US20230330743A1

公开(公告)日：2023-10-19

申请号：US18025308

申请日：2021-08-31

Applicant: SMS group GmbH

Inventor： Dirk Letzel ,  Uwe Plociennik ,  Volker Mers ,  Axel Stavenow ,  Ina Hüllen ,  Harminder Singh ,  Ingo OlgeMöller

IPC: B22D11/22 ,  B22D11/124

CPC classification number: B22D11/225 ,  B22D11/1246

Abstract: The invention relates to a method and to a spraying apparatus (10) for the thermal surface treatment of a metal product (1). The metal product (1) is conveyed in a transport direction (T) through a treatment section (12) of a spraying apparatus (10) equipped with cooling nozzles (16) while cooling fluid is discharged through the cooling nozzles (16) of the spraying apparatus (10) onto the surfaces of the metal product (1), wherein the metal product (1) has—viewed in the transport direction (T) of the metal product (1)—a front section (4) and a trailing rear section (5). The cooling of the surfaces of the metal product (1) within the spraying apparatus (10) occurs in such a manner that the rear section (5) of the metal product (1) is cooled more significantly than its front section (4). It is thereby achieved that an essentially uniform ferrite content forms in the material of the metal product (1) at a predetermined depth of the same over a longitudinal area extending between the front section (4) and the rear section (5).