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Title:
METHOD FOR INFRARED-HEATING STEEL SHEET, HOT FORMING METHOD, INFRARED FURNACE, AND PART FOR VEHICLE
Document Type and Number:
Japanese Patent JP2014147963
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for infrared-heating a steel sheet, which contributes to producing a steel sheet having desired characteristic distribution, and contributes to laborsaving of a forming process of a steel sheet and simplification of forming equipment.SOLUTION: A method for infrared-heating a steel sheet includes a whole heating step of infrared-heating a steel sheet evenly to a point A3 or more, and a temperature distribution control step of partially reducing strength of infrared applied to the steel sheet after the whole heating step to generate in the steel sheet a first area having the temperature of the point A3 or more and a second area having the temperature less than a point A1.

Inventors:
WADA RYOZO
Application Number:
JP2013018877A
Publication Date:
August 21, 2014
Filing Date:
February 01, 2013
Export Citation:
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Assignee:
AISIN TAKAOKA LTD
International Classes:
B21D24/00; B21D22/20; C21D1/18; C21D1/34; C21D9/00; F27D11/12
Domestic Patent References:
JP2011255413A2011-12-22
JP2011136342A2011-07-14
JP2011099567A2011-05-19
JP4575976B22010-11-04
JP2013503748A2013-02-04
Foreign References:
US20100300584A12010-12-02
DE102006054389A12008-05-21
US20040060623A12004-04-01
WO2012120123A12012-09-13
US20090320968A12009-12-31
EP2548975A12013-01-23
DE102009051822B32011-03-31
WO2011091983A22011-08-04
WO2012156084A12012-11-22
Attorney, Agent or Firm:
Asamichi Kato