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1.发明申请公开(公告)号：US20200216922A1
公开(公告)日：2020-07-09
申请号：US16240930
申请日：2019-01-07
Applicant: Ford Motor Company
Inventor： Constantin Chiriac , Maik Broda , Kyle Fleeger , Jagbir Guron , Torsten Hallfeldt , Elizabeth Bullard
Abstract: A method of treating a blank is provided. The method includes moving a blank through a first section of a furnace at an inter-critical temperature and through a second section of the furnace at a critical temperature greater than the inter-critical temperature before hot stamping the blank. Movement of the blank from the first section to the second section of the furnace is delayed during a hot stamping line stoppage. The blank is in the first section of the furnace for a first time period and in the second section of the furnace a second time period less than the first time period. Also, the first section of the furnace may have a first length and in the second section of the furnace may have a second length that is less than the first length.
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公开(公告)号：US20180111179A1
公开(公告)日：2018-04-26
申请号：US15299900
申请日：2016-10-21
Applicant: FORD MOTOR COMPANY
Inventor： Raj Sohmshetty , Constantin Chiriac , Torsten Hallfeldt , Elizabeth Bullard , James Engle
CPC classification number: B21C51/00 , B21D22/022 , B21D37/16 , C21D1/673 , C21D11/005
Abstract: A hot stamping system includes a controller programmed to alter a coolant flow rate, without altering cycle time, in an active cooling system of a die arrangement, configured to hot stamp metal into components, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state while the die arrangement is closed.
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公开(公告)号：US20180361455A1
公开(公告)日：2018-12-20
申请号：US15625486
申请日：2017-06-16
Applicant: Ford Motor Company
Inventor： Raj Sohmshetty , Rohit Telukunta , Darryl Leigh Young , Varinder Singh Saini , Torsten Hallfeldt
Abstract: A die apparatus including a first die element and a second die element is provided. The first die element is arranged with the second die element for disposal of a blank therebetween and includes a coolant channel and a trim groove for alignment with a trim line of the blank. A groove insert is disposed within the trim groove arranged to support a portion of the blank extending thereover and to reduce a cooling rate of the blank. The groove insert may be of a material including reflective radiation characteristics to reduce heat transfer from portions of the blank adjacent the trim line. The first die element may include a cavity aligned with a pierce region of the blank so that the pierce region does not contact an adjacent die element surface.
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公开(公告)号：US11229935B2
公开(公告)日：2022-01-25
申请号：US15299900
申请日：2016-10-21
Applicant: FORD MOTOR COMPANY
Inventor： Raj Sohmshetty , Constantin Chiriac , Torsten Hallfeldt , Elizabeth Bullard , James Engle
Abstract: A hot stamping system includes a controller programmed to alter a coolant flow rate, without altering cycle time, in an active cooling system of a die arrangement, configured to hot stamp metal into components, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state while the die arrangement is closed.
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