HOT-PRESS STAMPING COOLING METHOD AND HOT-PRESS STAMPING DEVICE

HOT-PRESS STAMPING COOLING METHOD AND HOT-PRESS STAMPING DEVICE

In hot press forming a thin steel sheet K, when cooling the thin steel sheet K by supplying a refrigerant to an ejection hole (27) communicated from a supply path (28) inside a lower mold (12), precooling in which an ejection amount per unit time period of the refrigerant from the ejection hole (27)...

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Bibliographische Detailangaben
Hauptverfasser: NOMURA, Naruhiko, SETO, Atsushi, FUKUCHI, Hiroshi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:In hot press forming a thin steel sheet K, when cooling the thin steel sheet K by supplying a refrigerant to an ejection hole (27) communicated from a supply path (28) inside a lower mold (12), precooling in which an ejection amount per unit time period of the refrigerant from the ejection hole (27) is suppressed is carried out, and thereafter, main cooling is carried out by increasing the ejection amount per unit time period.