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Title:
HEAT TREATMENT METHOD, HEAT TREATMENT DEVICE, AND HEAT TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/007046
Kind Code:
A1
Abstract:
Provided are a heat treatment method, a heat treatment device, and a heat treatment system, with which a heat treatment such as brightness treatment for a material being processed can be controlled precisely, efficiently, easily, and safely. In the present invention a heat treatment furnace has a heat treatment chamber, which performs heat treatment on a material being processed, and the furnace-internal structures of which are manufactured from graphite. The sensor information from various sensors is referenced to calculate ΔG° (the standard Gibbs energy of formation), and the state of the heat treatment furnace during operation is expressed with an Ellingham diagram, a management range, and ΔG°, and is displayed on a display device (331). In addition, the flow volume or the flow speed of a neutral gas or an inert gas used as an atmospheric gas is controlled by means of a control unit (334) such that ΔG° is within the management range.

Inventors:
TAKAHASHI SHINICHI (JP)
KANDA KIICHI (JP)
Application Number:
JP2013/066378
Publication Date:
January 09, 2014
Filing Date:
June 13, 2013
Export Citation:
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Assignee:
KANTO YAKIN KOGYO CO LTD (JP)
International Classes:
C21D1/74; C21D1/00; C21D11/00; F27B5/10; F27B9/24; F27D7/06
Domestic Patent References:
WO1998053939A11998-12-03
WO2007061012A12007-05-31
Foreign References:
JPS60223988A1985-11-08
JPH08268749A1996-10-15
JPH06317380A1994-11-15
JPH032317A1991-01-08
JPS60215717A1985-10-29
JP3554936B22004-08-18
JP3324004B22002-09-17
Other References:
See also references of EP 2871248A4
KEIKINZOKU, vol. 57, no. 12
KEIKINZOKU, vol. 57, no. 12, December 2007 (2007-12-01), pages 578 - 582
Attorney, Agent or Firm:
HOSAKA, Michiko (JP)
Michiko Hosaka (JP)
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