Patent ID: 9433989
Filing Date: 2016-09-06
CPC Classification: B21D,C21D

Claim Text:
1. A hot press forming method which shapes a heated metal sheet using a forming die which is comprised of a first die and a second die, comprising steps of: arranging the heated metal sheet between said first die and said second die; making said first die and said second die approach to press the metal sheet which is clamped between the two dies; after pressing said metal sheet, feeding liquid state or mist state coolant to the surface of the metal sheet which is clamped between the two dies through a plurality of feed holes which are provided at least at one of said first die and said second die; and, after said coolant finishes being fed, blowing a gas through said plurality of feed holes to the surface of the metal sheet, wherein said first die and second die are separated before feeding said gas to the surface of the metal sheet.