PH12015000137A1 - Heat treatment furnace - Google Patents

Heat treatment furnace

Info

Publication number
PH12015000137A1
PH12015000137A1 PH12015000137A PH12015000137A PH12015000137A1 PH 12015000137 A1 PH12015000137 A1 PH 12015000137A1 PH 12015000137 A PH12015000137 A PH 12015000137A PH 12015000137 A PH12015000137 A PH 12015000137A PH 12015000137 A1 PH12015000137 A1 PH 12015000137A1
Authority
PH
Philippines
Prior art keywords
range
manipulated
flow rate
manipulated amount
amount
Prior art date
Application number
PH12015000137A
Other versions
PH12015000137B1 (en
Inventor
Tomoaki Shimura
Takahiko Hashimoto
Original Assignee
Ngk Insulators Ltd
Ngk Kilntech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ngk Insulators Ltd, Ngk Kilntech Corp filed Critical Ngk Insulators Ltd
Publication of PH12015000137A1 publication Critical patent/PH12015000137A1/en
Publication of PH12015000137B1 publication Critical patent/PH12015000137B1/en

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Landscapes

  • Furnace Details (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Feedback Control In General (AREA)
  • Tunnel Furnaces (AREA)

Abstract

A manipulated amount MV1 is determined within a manipulated amount range of a manipulated amount upper limit value to a manipulated amount lower limit value through feedback control on the basis of an oxygen concentration in a treatment space 11a which is detected by a first or second oxygen sensor and on the basis of a target value Ct of the oxygen concentration. Then, a manipulated flow rate MV2 is derived, which is a value obtained after conversion of the determined manipulated amount MV1, the conversion being achieved by converting the manipulated amount range into a limited range that is a range obtained by narrowing a flow rate range within which an MFC 34 can adjust a flow rate of hydrogen by at least one of lowering an upper limit and raising a lower limit of the flow rate range. Then, the derived manipulated flow rate MV2 is output to the MVC 34.
PH12015000137A 2014-06-11 2015-05-05 Heat treatment furnace PH12015000137B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014120313A JP6162077B2 (en) 2014-06-11 2014-06-11 Heat treatment furnace

Publications (2)

Publication Number Publication Date
PH12015000137A1 true PH12015000137A1 (en) 2016-11-21
PH12015000137B1 PH12015000137B1 (en) 2016-11-21

Family

ID=54899673

Family Applications (1)

Application Number Title Priority Date Filing Date
PH12015000137A PH12015000137B1 (en) 2014-06-11 2015-05-05 Heat treatment furnace

Country Status (5)

Country Link
JP (1) JP6162077B2 (en)
KR (1) KR20150142602A (en)
CN (1) CN105177251B (en)
PH (1) PH12015000137B1 (en)
TW (1) TWI646201B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102685510B1 (en) * 2018-09-06 2024-07-15 스미도모쥬기가이고교 가부시키가이샤 Support equipment, boiler system, support method and support program
JP7517226B2 (en) 2021-03-31 2024-07-17 株式会社村田製作所 Heat Treatment System
JP7318086B1 (en) 2022-09-22 2023-07-31 株式会社ノリタケカンパニーリミテド Continuous heating furnace

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211247A1 (en) * 1982-03-26 1983-10-06 Riedhammer Ludwig Gmbh Process for reducing the oxygen content of the atmosphere of a continuous annealing furnace, and annealing furnace to perform this process
JPH03101296A (en) * 1989-09-14 1991-04-26 Fujitsu Ltd Structure of reflow furnace for soldering printed circuit board
JP2985163B2 (en) * 1991-02-01 1999-11-29 大同特殊鋼株式会社 Atmosphere gas control method in strip atmosphere furnace
JPH05141870A (en) * 1991-11-20 1993-06-08 Mitsui Petrochem Ind Ltd Low concentration holding device for remaining oxygen amount in continuous furnace
JP2947661B2 (en) * 1992-02-21 1999-09-13 株式会社東芝 Cross limit combustion control method
JP2000148253A (en) * 1998-09-10 2000-05-26 Toshiba Corp Balance controller for in-furnace pressure and exhaust gas flow rate of heating furnace plant
US6612154B1 (en) * 1998-12-22 2003-09-02 Furnace Control Corp. Systems and methods for monitoring or controlling the ratio of hydrogen to water vapor in metal heat treating atmospheres
US20080149226A1 (en) * 2006-12-26 2008-06-26 Karen Anne Connery Method of optimizing an oxygen free heat treating process
JP2010255056A (en) * 2009-04-27 2010-11-11 Daido Steel Co Ltd Method of controlling furnace atmosphere in heat treatment furnace
PL2336372T3 (en) * 2009-12-16 2016-09-30 Method and device for regulating process gases for the thermoforming of metallic materials/workpieces in industrial ovens
JP2012021186A (en) * 2010-07-13 2012-02-02 Toyota Motor Corp Apparatus and method for heat treatment

Also Published As

Publication number Publication date
JP2016001064A (en) 2016-01-07
PH12015000137B1 (en) 2016-11-21
CN105177251A (en) 2015-12-23
JP6162077B2 (en) 2017-07-12
TWI646201B (en) 2019-01-01
CN105177251B (en) 2018-03-09
TW201615845A (en) 2016-05-01
KR20150142602A (en) 2015-12-22

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