公开(公告)号：US11433646B2

公开(公告)日：2022-09-06

申请号：US16394060

申请日：2019-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles Enloe ,  Michael J. Karagoulis ,  Curt D. Horvath

IPC: B32B15/01 ,  C23C2/06 ,  C22C18/04 ,  B23K11/11 ,  B23K11/16 ,  C23C28/02 ,  C23C2/28 ,  C23C2/34 ,  C21D1/26 ,  C23C28/00 ,  C23C30/00 ,  B32B15/20 ,  B32B15/04 ,  C23C2/40 ,  B32B15/18 ,  C22C18/00 ,  B23K103/04

Abstract: A metallic component includes a core formed of steel. A zinc alloy layer is disposed on the core. The zinc alloy layer is formed of zinc and a very small amount of aluminum, such as 0.14 weight percent or less. A method of creating a component includes providing a steel core, providing a zinc bath consisting of essentially of 0.01 to 0.14 weight percent aluminum, and hot dipping the steel core into the zinc bath to form a zinc coating on the steel core resulting in a zinc-coated steel component. The aluminum may be provided in even lower contents, such as less than 0.08 weight percent, or even less than 0.05 weight percent. The zinc-coated steel component may then be spot welded to another component without first annealing the zinc-coated component. Rather, heat treating is performed locally at the weld joint by the welding procedure alone.

公开(公告)号：US20200338856A1

公开(公告)日：2020-10-29

申请号：US16394060

申请日：2019-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles Enloe ,  Michael J. Karagoulis ,  Curt D. Horvath

IPC: B32B15/01 ,  C23C2/06 ,  C22C18/04 ,  B23K11/11

Abstract: A metallic component includes a core formed of steel. A zinc alloy layer is disposed on the core. The zinc alloy layer is formed of zinc and a very small amount of aluminum, such as 0.14 weight percent or less. A method of creating a component includes providing a steel core, providing a zinc bath consisting of essentially of 0.01 to 0.14 weight percent aluminum, and hot dipping the steel core into the zinc bath to form a zinc coating on the steel core resulting in a zinc-coated steel component. The aluminum may be provided in even lower contents, such as less than 0.08 weight percent, or even less than 0.05 weight percent. The zinc-coated steel component may then be spot welded to another component without first annealing the zinc-coated component. Rather, heat treating is performed locally at the weld joint by the welding procedure alone.

公开(公告)号：US12012641B2

公开(公告)日：2024-06-18

申请号：US17101243

申请日：2020-11-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shane M. Anderson ,  Charles Enloe ,  Qi Lu ,  Jason J. Coryell ,  Adam D. Hodges

IPC: C21D9/48 ,  B21D22/02 ,  B21D26/053 ,  B21D43/10 ,  B25J9/02 ,  B25J15/00 ,  C21D1/42 ,  H05B1/02 ,  H05B3/00 ,  H05B6/10

CPC classification number: C21D9/48 ,  B21D22/022 ,  B21D26/053 ,  B21D43/105 ,  C21D1/42 ,  H05B1/023 ,  H05B3/0023 ,  H05B6/101 ,  B25J9/02 ,  B25J15/0028 ,  B25J15/0052 ,  C21D2211/001

Abstract: A method of forming a component includes providing a work-piece blank from a formable material. The method also includes engaging the work-piece blank with a transfer device. The method additionally includes austenitizing the work-piece blank in the transfer device via heating the blank to achieve austenite microstructure therein. The method also includes transferring the austenitized blank to a forming press using the transfer device. The method additionally includes forming the component via the forming press from the austenitized blank and quenching the formed component. A work-piece blank transfer system includes a transfer device having clamping arm(s) for engaging, holding, transferring, and releasing the work-piece blank. The transfer device also includes a heating element configured to austenitize the work-piece blank via heating the blank to achieve austenite microstructure therein. The transfer system additionally includes an electronic controller programmed to regulate the heating element and the clamping arm(s).

公开(公告)号：US20190040487A1

公开(公告)日：2019-02-07

申请号：US15668751

申请日：2017-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles Enloe ,  Curt D. Horvath ,  David Yang ,  Qi Lu ,  Wu Tao

IPC: C21D9/46 ,  C21D8/02 ,  C21D3/04 ,  C23C2/06 ,  B32B15/01 ,  B23K11/11 ,  B23K11/16 ,  B23K26/22 ,  B23K26/322

CPC classification number: C21D9/46 ,  B23K11/11 ,  B23K11/115 ,  B23K11/166 ,  B23K26/22 ,  B23K26/322 ,  B23K2103/166 ,  B32B15/013 ,  C21D3/04 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0257 ,  C21D2211/005 ,  C23C2/02 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C8/18 ,  C23C28/02 ,  C23C28/025 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12458 ,  Y10T428/12799 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/24975 ,  Y10T428/263 ,  Y10T428/264 ,  Y10T428/265

Abstract: A multilayer steel includes a core formed of transformation-induced plasticity (TRIP) steel. A decarburized layer is exterior to the core on at least one side thereof. The decarburized layer has reduced carbon content relative to the core. A zinc-based layer is exterior to the decarburized layer. The decarburized layer may have a composition of at least 80 percent ferrite, such that LME is reduced or mitigated. In some configurations, the decarburized layer is between 10-50 microns thick. A method of creating a coated advanced high-strength steel component is also provided. An apparatus for forming a coated advanced high-strength steel is also provided. The core of the multilayer steel may have a carbon weight-percent of less than or equal to 0.4. The decarburized layer of the multilayer steel may have a carbon weight-percent of less than or equal to 50 percent of the carbon weight-percent of the core.

公开(公告)号：US20220162721A1

公开(公告)日：2022-05-26

申请号：US17101243

申请日：2020-11-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shane M. Anderson ,  Charles Enloe ,  Qi Lu ,  Jason J. Coryell ,  Adam D. Hodges

IPC: C21D9/48 ,  H05B3/00 ,  H05B6/10 ,  H05B1/02 ,  B21D26/053 ,  C21D1/42

Abstract: A method of forming a component includes providing a work-piece blank from a formable material. The method also includes engaging the work-piece blank with a transfer device. The method additionally includes austenitizing the work-piece blank in the transfer device via heating the blank to achieve austenite microstructure therein. The method also includes transferring the austenitized blank to a forming press using the transfer device. The method additionally includes forming the component via the forming press from the austenitized blank and quenching the formed component. A work-piece blank transfer system includes a transfer device having clamping arm(s) for engaging, holding, transferring, and releasing the work-piece blank. The transfer device also includes a heating element configured to austenitize the work-piece blank via heating the blank to achieve austenite microstructure therein. The transfer system additionally includes an electronic controller programmed to regulate the heating element and the clamping arm(s).

公开(公告)号：US10329639B2

公开(公告)日：2019-06-25

申请号：US15668751

申请日：2017-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles Enloe ,  Curt D. Horvath ,  David Yang ,  Qi Lu ,  Wu Tao

IPC: C21D9/46 ,  C21D8/02 ,  C21D3/04 ,  C23C2/06 ,  B32B15/01 ,  B23K11/11 ,  B23K11/16 ,  B23K26/22 ,  B23K26/322 ,  C23C30/00 ,  C23C2/28 ,  C23C2/40 ,  C23C2/02 ,  C23C2/26 ,  B23K103/16

Abstract: A multilayer steel includes a core formed of transformation-induced plasticity (TRIP) steel. A decarburized layer is exterior to the core on at least one side thereof. The decarburized layer has reduced carbon content relative to the core. A zinc-based layer is exterior to the decarburized layer. The decarburized layer may have a composition of at least 80 percent ferrite, such that LME is reduced or mitigated. In some configurations, the decarburized layer is between 10-50 microns thick. A method of creating a coated advanced high-strength steel component is also provided. An apparatus for forming a coated advanced high-strength steel is also provided. The core of the multilayer steel may have a carbon weight-percent of less than or equal to 0.4. The decarburized layer of the multilayer steel may have a carbon weight-percent of less than or equal to 50 percent of the carbon weight-percent of the core.