EP 2257651 A1 20101208 - METHOD FOR SHAPING FROM A BLANK OF A HARDENING MATERIAL WITH DIFFERENTIAL COOLING
Title (en)
METHOD FOR SHAPING FROM A BLANK OF A HARDENING MATERIAL WITH DIFFERENTIAL COOLING
Title (de)
VERFAHREN ZUM FORMEN EINES ROHLINGS AUS EINEM HÄRTENDEN MATERIAL MIT DIFFERENTIELLER KÜHLUNG
Title (fr)
PROCEDE DE FORMAGE A PARTIR DE FLAN EN MATERIAU TREMPANT AVEC REFROIDISSEMENT DIFFERENTIEL
Publication
Application
Priority
- EP 2009052289 W 20090226
- FR 0851201 A 20080226
Abstract (en)
[origin: WO2009106571A1] The invention relates to a drawing tool (1) for shaping and cooling a steel part from a blank (6), said tool including: at least one punch (2); and at least one matrix (3); the punch and the matrix each including: at least a first portion (21, 31) corresponding to a hot area (11) of the drawing tool; and at least a second portion (22, 32) corresponding to a cold area (12) of the drawing tool; in the cold area, the second part of the punch and the second part of the matrix are brought into contact with the blank when the drawing tool is closed; characterised in that, in the hot area of the drawing tool, a heating means are provided for heating said hot area to a temperature higher than about 400°C, and in that, in said hot area, a distance (L) on top of the blank thickness (e) is provided between the punch and the matrix when the drawing tool is closed, is related to the temperature (T) of the hot area, and is given by the formula T = 100.(6 - L), with L > 0.2 and 400 < T < 600, L being in mm and T in °C.
IPC 8 full level
C21D 1/673 (2006.01); B21D 22/02 (2006.01); B21D 22/20 (2006.01); B21D 37/16 (2006.01); B21D 53/88 (2006.01)
CPC (source: EP US)
B21D 22/022 (2013.01 - EP US); B21D 22/20 (2013.01 - EP US); B21D 37/16 (2013.01 - EP US); C21D 1/62 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US)
Citation (search report)
See references of WO 2009106571A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
FR 2927828 A1 20090828; FR 2927828 B1 20110218; AT E522628 T1 20110915; CN 102084011 A 20110601; CN 102084011 B 20130925; EP 2257651 A1 20101208; EP 2257651 B1 20110831; ES 2373486 T3 20120206; US 2011030442 A1 20110210; US 8646302 B2 20140211; WO 2009106571 A1 20090903; WO 2009106571 A8 20091119; WO 2009106571 A8 20100107; WO 2009106571 A8 20101202
DOCDB simple family (application)
FR 0851201 A 20080226; AT 09715243 T 20090226; CN 200980112613 A 20090226; EP 09715243 A 20090226; EP 2009052289 W 20090226; ES 09715243 T 20090226; US 93387409 A 20090226