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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.
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.
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公开(公告)号：US10308992B2
公开(公告)日：2019-06-04
申请号：US14830800
申请日：2015-08-20
Applicant: Ford Motor Company
Inventor： Kevin Robert Chauvin , Garret Sankey Huff , Constantin Chiriac , Raj Sohmshetty
Abstract: A method and system are disclosed for treating a press hardened part by induction heating localized areas of the part to have reduced hardness. The method and system monitor an ambient temperature, cycle time, outgoing part property requirements, and outgoing part hardness in local areas. A time value and temperature value are set by a computer system for a plurality of induction heaters. A local area of the part is induction heated to soften the part in localized areas. The hardness of the localized areas is tested after induction heating.
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