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：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.