公开(公告)号：US11198915B2

公开(公告)日：2021-12-14

申请号：US15892122

申请日：2018-02-08

Applicant: Ford Motor Company

Inventor： Raj Sohmshetty ,  Constantin Chiriac ,  Mikhail Minevich ,  Jason Balzer ,  S. George Luckey, Jr.

IPC: C21D6/00 ,  C22C38/00 ,  C21D1/18 ,  C21D1/58 ,  C21D1/60 ,  C21D1/667 ,  C21D1/673 ,  C22C38/02 ,  C22C38/04

Abstract: A method of quenching a press hardenable steel is provided. The method includes an initial step of die quenching a part stamped within a stamping die followed by a partial quenching after the initial step of die quenching. In various methods, the press hardenable steel is a 36MnB5 grade steel and/or the initial step of die quenching is performed at a temperature of approximately 200° C.±10° C. in a die configured for 36MnB5 grade steel. At least one method further includes opening the die followed by the partial quenching, the partial quenching comprising spraying a cooling liquid onto the part to reduce a temperature of the part below approximately 130° C.±10° C., with the option of spraying to reduce the temperature of the part below approximately 100° C.±10° C.

公开(公告)号：US11198167B2

公开(公告)日：2021-12-14

申请号：US16018506

申请日：2018-06-26

Applicant: Ford Motor Company

Inventor： Raj Sohmshetty ,  Constantin Chiriac ,  Mikhail Minevich ,  Liang Huang

IPC: B21D22/02 ,  C21D1/673 ,  B21D24/16 ,  B21D28/14 ,  C21D11/00 ,  B21D37/16

Abstract: A method of forming a hot stamped, die quenched, and die trimmed part is provided. The method includes hot stamping and die quenching a blank with a quench die and forming a die quenched panel. The quench die includes at least one slow-cooling channel. The die quenched panel is die trimmed along the at least one localized soft zone that is adjacent a hard zone. The blank may be formed from a press hardenable steel (PHS), and the at least one soft zone may have a ferritic microstructure and the at least one hard zone may have a martensitic microstructure. The at least one localized soft zone may have a microhardness between about 200 HV and about 250 HV and the hard zone may have a microhardness between about 400 HV and about 500 HV.

公开(公告)号：US11135703B2

公开(公告)日：2021-10-05

申请号：US15989429

申请日：2018-05-25

Applicant: Ford Motor Company

Inventor： Thomas Norton ,  Mikhail Minevich ,  Vladimir Bogachuk

IPC: B25B11/00 ,  B05C13/02 ,  C25D17/06

Abstract: A temporary restraining device is provided that includes a head portion, a central body positioned below the head portion, an upper gap defined between the head portion and the central body, and a base portion positioned below the central body, a lower gap defined between the base portion and the central body. The temporary restraining device maintains a predetermined offset between workpieces disposed within the upper and lower gaps for subsequent manufacturing operations.

公开(公告)号：US20190241987A1

公开(公告)日：2019-08-08

申请号：US15892122

申请日：2018-02-08

Applicant: Ford Motor Company

Inventor： Raj Sohmshetty ,  Constantin Chiriac ,  Mikhail Minevich ,  Jason Balzer ,  S. George Luckey, JR.

IPC: C21D6/00 ,  C21D1/673 ,  C21D1/667 ,  C21D1/60 ,  C21D1/58 ,  C21D1/18 ,  C22C38/04 ,  C22C38/02

CPC classification number: C21D6/008 ,  C21D1/18 ,  C21D1/58 ,  C21D1/60 ,  C21D1/667 ,  C21D1/673 ,  C21D6/005 ,  C22C38/02 ,  C22C38/04

Abstract: A method of quenching a press hardenable steel is provided. The method includes an initial step of die quenching a part stamped within a stamping die followed by a partial quenching after the initial step of die quenching. In various methods, the press hardenable steel is a 36MnB5 grade steel and/or the initial step of die quenching is performed at a temperature of approximately 200° C.±10° C. in a die configured for 36MnB5 grade steel. At least one method further includes opening the die followed by the partial quenching, the partial quenching comprising spraying a cooling liquid onto the part to reduce a temperature of the part below approximately 130° C.±10° C., with the option of spraying to reduce the temperature of the part below approximately 100° C.±10° C.

公开(公告)号：US10428412B2

公开(公告)日：2019-10-01

申请号：US15343629

申请日：2016-11-04

Applicant: Ford Motor Company

Inventor： Nia R. Harrison ,  Mikhail Minevich ,  S. George Luckey, Jr.

IPC: C22F1/05

Abstract: Methods of heat treating aluminum alloys are disclosed. The method may include forming a sheet of solution heat-treated, quenched, and aged 6xxx series aluminum having a sheet average yield strength of at least 100 MPa into a component. The component may then be attached to an assembly and at least a portion of the assembly may be painted. The method may then include heat treating the assembly to cure the paint and to increase a component average yield to at least 240 MPa. In another embodiment, the method may include progressively forging a sheet of T4-tempered 6xxx series aluminum into a component using multiple dies and artificially aging the component at 210° C. to 240° C. for 20 to 40 minutes to a component average yield strength of at least 300 MPa. The methods may reduce component cycle time and may reduce strength gradients within the component.