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Title:
APPARATUS AND METHOD FOR HEAT-TREATING STEEL PLATE
Document Type and Number:
Japanese Patent JP3945212
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide an apparatus and a method for heat-treating a steel plate, which can accurately heat it so that an average temperature can match an aim heat treatment temperature, while uniformizing a temperature along a short-transverse direction of the steel plate, and controlling an upper limit of the surface temperature.
SOLUTION: This apparatus includes arranging several solenoid type induction heating devices at a predetermined distance in series. This method includes comparing a measured temperature at an inlet Tri, which has been measured with a thermometer Ri set in the inlet of an i-th solenoid type induction heating device Hi, to an aim temperature for the inlet Tmi, converting the error of the temperature to an electric power ΔPhi for heating, when there is an error between them, calculating an electric power ΔPei for charging, through dividing the ΔPhi by heating efficiency νi, and correcting the electric power Pei for charging to the solenoid type induction heating device Hi, with the error of only ΔPei.


Inventors:
Hiroshi Sekine
Akio Fujibayashi
Akira Tagane
Masatoshi Sugioka
Application Number:
JP2001314160A
Publication Date:
July 18, 2007
Filing Date:
October 11, 2001
Export Citation:
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Assignee:
jfe Steel Corporation
International Classes:
C21D1/42; C21D1/18; (IPC1-7): C21D1/42; C21D1/18
Domestic Patent References:
JP51009176B1
JP63126608A
JP41016843B1
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori