(19)
(11) EP 2 395 116 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.12.2013 Bulletin 2013/52

(43) Date of publication A2:
14.12.2011 Bulletin 2011/50

(21) Application number: 11168891.7

(22) Date of filing: 07.06.2011
(51) International Patent Classification (IPC): 
C21D 1/673(2006.01)
H05B 3/22(2006.01)
C21D 9/00(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 11.06.2010 JP 2010133947

(71) Applicant: Toyoda Iron Works Co., Ltd.
Toyota-shi Aichi 471-8507 (JP)

(72) Inventor:
  • Ichikawa, Masanobu
    Toyota-shi, Aichi 471-8507 (JP)

(74) Representative: TBK 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Steel sheet heating device, method for producing press-formed part, and press-formed part


(57) It is provided a steel sheet heating device (10) that heats a flat steel sheet (16, 60), characterized by including: a hot plate (12, 14, 40) having a flat heating surface (12f, 14f, 42f, 44f, 46f) brought into close contact with the steel sheet; and a plurality of heating equipment (18, 18a-18m, 52) able to heat a plurality of heating regions (20a-20d, 42, 44, 46), formed by dividing the heating surface of the hot plate into a plurality of sections, to different heating temperatures at the same time, wherein the steel sheet is heated to different temperatures at various portions based on the heating temperatures of the plurality of heating regions of the heating surface, at the same time through a single heating treatment.







Search report









Search report