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

IPC: C21D1/673 ,  C21D1/18 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40

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.