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公开(公告)号：US20250010350A1
公开(公告)日：2025-01-09
申请号：US18709293
申请日：2022-11-08
Applicant: ArcelorMittal
Inventor： Alexandre BLAISE , Christophe TALLON
Abstract: A hot stamping die (2,3) including a die body (11) having a work face (9) which is in contact with a blank during the hot stamping operation, and at least one porous die portion (4) having a corresponding porous work face portion (7), the porous die body portion being in contact with a reservoir (6, 40), the reservoir (6, 40) containing a cooling medium (8), and the porous die body portion including a plurality of ejection channels (5) extending from the reservoir (6, 40) to the porous work face portion, wherein the ejection channels (5) are configured to eject the cooling medium (8) from the reservoir (6, 40) towards the porous work face portion (7) when the pressure on the cooling medium is increased above a threshold ejection pressure, and wherein the die (2,3) does not include any discharge channels to evacuate excess ejected coolant from the dies after hot stamping.
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