EP2336372A3 - Method and device for regulating process gases for the thermoforming of metallic materials/workpieces in industrial ovens - Google Patents

Method and device for regulating process gases for the thermoforming of metallic materials/workpieces in industrial ovens Download PDF

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Publication number
EP2336372A3
EP2336372A3 EP10015290.9A EP10015290A EP2336372A3 EP 2336372 A3 EP2336372 A3 EP 2336372A3 EP 10015290 A EP10015290 A EP 10015290A EP 2336372 A3 EP2336372 A3 EP 2336372A3
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EP
European Patent Office
Prior art keywords
pressure
valve
workpieces
metallic materials
industrial
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP10015290.9A
Other languages
German (de)
French (fr)
Other versions
EP2336372A2 (en
EP2336372B1 (en
Inventor
Hendrik Dr. Grobler
Bernd Dr. Edenhofer
Jens Bechthold
Thomas Eversmann
Dirk Joritz
Nils Bernhagen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ipsen International GmbH
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Ipsen International GmbH
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Publication date
Application filed by Ipsen International GmbH filed Critical Ipsen International GmbH
Publication of EP2336372A2 publication Critical patent/EP2336372A2/en
Publication of EP2336372A3 publication Critical patent/EP2336372A3/en
Application granted granted Critical
Publication of EP2336372B1 publication Critical patent/EP2336372B1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

Zur Regelung von Prozessgasen für Wärmebehandlungen von metallischen Werkstoffen/Werkstücken in Industrieöfen (1), die mindestens einen Behandlungsraum (2), mindestens eine Abbrandstelle (4) mit mindestens einem ersten Ventil (4.1) und eine Regelung (5) mit Druckmesser (5.1) aufweisen, soll die Abbrandstelle (4) nur in Abhängigkeit prozessgasbedingter Notwendigkeiten geöffnet werden. Dazu wird in einem ersten Schritt bei geöffnetem ersten Ventil (4.1) eine Menge eines Spülgases (6.1) des Gasgemisches (6) des jeweiligen Prozessgases dem Industrieofen (1) gesteuert zugeführt und dann abgebrannt, in einem zweiten Schritt das Ventil (4.1) geschlossen, der Industrieofen (1) auf einen voreingestellten Ofendruck geregelt und dieser permanent über den Druckmesser (5.1) erfasst, in einem dritten Schritt bei erreichtem Solldruck des Industrieofens dieser Druck über den Druckmesser (5.1) erfasst und gehalten, wobei das erste Ventil (4.1) weiterhin geschlossen bleibt. In einem vierten Schritt kann die Spülbegasung aktiviert und eingeregelt werden. Bei großem Druckanstieg kann in einem fünften Schritt eine Überdruckklappe (4.3) der Abbrandstelle (4) zum Druckabbau gesteuert über einen festen Grenzwert hinaus geöffnet werden (Fig. 1).

Figure imgaf001
For controlling process gases for heat treatment of metallic materials / workpieces in industrial furnaces (1), the at least one treatment space (2), at least one burn-off point (4) with at least one first valve (4.1) and a control (5) with pressure gauge (5.1) have, the Abbrandstelle (4) should be opened only in dependence of process gas related necessities. For this purpose, in a first step, when the first valve (4.1) is open, a quantity of purge gas (6.1) of the gas mixture (6) of the respective process gas is fed to the industrial furnace (1) and then burned off, in a second step the valve (4.1) is closed, the industrial furnace (1) controlled to a preset furnace pressure and this permanently detected by the pressure gauge (5.1), detected in a third step at the setpoint pressure of the industrial furnace this pressure on the pressure gauge (5.1) and held, the first valve (4.1) continue remains closed. In a fourth step, the flushing fumigation can be activated and adjusted. In the case of a large increase in pressure, in a fifth step, an overpressure flap (4.3) of the burn-off point (4) can be opened in a controlled manner to release pressure above a fixed limit value (FIG. 1).
Figure imgaf001
EP10015290.9A 2009-12-16 2010-12-03 Method and device for regulating process gases for the thermoforming of metallic materials/workpieces in industrial ovens Active EP2336372B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009005864 2009-12-16

Publications (3)

Publication Number Publication Date
EP2336372A2 EP2336372A2 (en) 2011-06-22
EP2336372A3 true EP2336372A3 (en) 2013-10-02
EP2336372B1 EP2336372B1 (en) 2016-03-02

Family

ID=43759652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10015290.9A Active EP2336372B1 (en) 2009-12-16 2010-12-03 Method and device for regulating process gases for the thermoforming of metallic materials/workpieces in industrial ovens

Country Status (2)

Country Link
EP (1) EP2336372B1 (en)
PL (1) PL2336372T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177251A (en) * 2014-06-11 2015-12-23 日本碍子株式会社 Heat treatment furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107099651A (en) * 2017-05-16 2017-08-29 浙江久立特材科技股份有限公司 A kind of method and system of perhydro protection gas roller bottom stove hydrogen flowing quantity control
CN114507777B (en) * 2020-11-16 2024-01-05 上海梅山钢铁股份有限公司 Furnace pressure control method of horizontal annealing furnace

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008029001B3 (en) * 2008-06-20 2009-09-17 Ipsen International Gmbh Method and device for the heat treatment of metallic materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008029001B3 (en) * 2008-06-20 2009-09-17 Ipsen International Gmbh Method and device for the heat treatment of metallic materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177251A (en) * 2014-06-11 2015-12-23 日本碍子株式会社 Heat treatment furnace
CN105177251B (en) * 2014-06-11 2018-03-09 日本碍子株式会社 Heat-treatment furnace

Also Published As

Publication number Publication date
EP2336372A2 (en) 2011-06-22
EP2336372B1 (en) 2016-03-02
PL2336372T3 (en) 2016-09-30

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