EP2622107A1 - Procédé et dispositif destinés à guider un écoulement dans des fours industriels pour le traitement thermique de matériaux/pièces métalliques - Google Patents

Procédé et dispositif destinés à guider un écoulement dans des fours industriels pour le traitement thermique de matériaux/pièces métalliques

Info

Publication number
EP2622107A1
EP2622107A1 EP10779212.9A EP10779212A EP2622107A1 EP 2622107 A1 EP2622107 A1 EP 2622107A1 EP 10779212 A EP10779212 A EP 10779212A EP 2622107 A1 EP2622107 A1 EP 2622107A1
Authority
EP
European Patent Office
Prior art keywords
chamber
space
gas
flow
cooling
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.)
Withdrawn
Application number
EP10779212.9A
Other languages
German (de)
English (en)
Inventor
Peter Lankes
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
Original Assignee
Ipsen International GmbH
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 Ipsen International GmbH filed Critical Ipsen International GmbH
Publication of EP2622107A1 publication Critical patent/EP2622107A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0072—Cooling of charges therein the cooling medium being a gas
    • F27D2009/0075—Cooling of charges therein the cooling medium being a gas in direct contact with the charge

Definitions

  • the invention relates to a method and a device for directing the flow of gases in the process of heat treatment of metallic materials / workpieces in industrial furnaces, in particular for treatment chambers of vacuum furnaces, preferably single-chamber vacuum furnaces for cooling the materials / workpieces.
  • the so-called single-chamber vacuum furnace must have a structural design
  • furnace housing arranged gas cooling device, as this has to provide for the supply and removal of cooling gas.
  • the outer chamber is pressurized and the inner chamber under pressure with a fan to operate in mutual flow direction.
  • the Applicant has already developed a converter-assisted single-chamber high-pressure variable-pressure vacuum furnace of the "Turbo 2 Treater" type introduced in practice. It can be used for numerous heat treatment and joining processes, such as hardening, brazing, blank and solution annealing, degassing, relaxing and tempering.
  • the furnace housing consists of a cylindrical container and a loading door, which are water cooled via separate cooling lines and connected to each other via flanges and seals.
  • the furnace housing includes the heating chamber with the heater, a receptacle for the
  • the chamber door incorporates a water-cooled convection motor that provides convection temperature uniformity in the batch during convection operation to recirculate the inert gas in the heating chamber.
  • the device responsible for this essentially comprises a fan for the cooling gas, at least one heat exchanger and a gas control system.
  • the motor-driven blower for the cooling gas is attached to a back of the furnace housing designed as a dished bottom, which ensures a controlled cooling of the charge.
  • the heat exchanger is arranged between said back of the furnace housing and heating chamber and consists of finned tubes, which flowed through by water and in
  • the gas control system ensures optimum flow through the heat exchanger and consists of a gas distributor which ensures a change of direction of the gas.
  • the gas thus flows through the batch at adjustable intervals, alternately in this case from the top and bottom, thereby adapting to the batch conditions and cooling.
  • the cycle of cooling begins with the start of the fan, with the gas in the Oven flows until a preselected pressure is reached.
  • the gas is sucked in by the blower from the hot heating chamber, compressed and forced through the heat exchanger in a selected inflow. Due to the alternating gas distributor, the cooling gas passes via flow guide to the charge and flows through them evenly and with high
  • the furnace pressure is kept constant by feeding gas.
  • JP 4441903 B2 The solution disclosed in JP 4441903 B2 is based on this solution principle, but a system is presented there for gas distribution in which the
  • This system is disadvantageous because the hood enclosing the heat exchanger does not hinder further intensification of the cooling, but rather a rectification of the flow or at least causes unfavorable flow conditions.
  • EP 2 116 802 AI provides as a main idea, a combination of a rigid with a rotating disk in order to ensure the change of direction by mutual release of openings. Apart from the kinematic disadvantages of the design of the rotating disk, unfavorable flow conditions also arise here, which disadvantage the cooling process.
  • the Applicant has already proposed according to the patent application DE 10 2009 052 900.4 a method and a device for directing a flow of gases in the process of heat treatment, in which a generated and flowing in one direction original flow against in the Distance surfaces to each other is guided, these surfaces are flown, the original flow between the surfaces by the effect of a stall to free Edges of the surfaces divided in the original flow direction deflected directions of flow and a uniform and intensified leading fumigation of a batch forming and treated materials / workpieces is passed into the treatment chamber.
  • JP2010-107193 A1 and JP2010-107194 A1 disclose heat treatment apparatuses which are also concerned with the improvement of the
  • flow-permeable enclosures of the heat exchangers do not achieve the effects as they are intended.
  • the invention is based on the object to provide an efficient process flow for guiding the flow and a structurally simple device with which the
  • this object is achieved by a method according to the steps of claim 1 and a device having the features of claim 2 to the guidance of a flow of gases in the process of heat treatment of metallic materials / workpieces in industrial furnaces, especially for treatment chambers of vacuum furnaces, preferably Single-chamber vacuum ovens, to improve.
  • the method provides the procedure that
  • Oven housing arranged wall to the heat exchanger pressed into a return cooling chamber and evenly distributed in this and cooled, while the cooling of the gas in the re-cooling chamber is intensified and demarcated, then
  • the device in the industrial furnace comprises the combination of the following partly known features:
  • the flow sequence is improved in its overall cycle.
  • Crucial here is the effect that a larger specifically related to the surface of the heat exchanger admission takes place, so that already starting with the process step according to feature a), the heat exchange of the flow is more efficient.
  • the invention provides a functional linkage to some known features to a uniform flow-side effect, which also influences an optimal design, i.
  • the invention has an advantageous effect on the energy and environmental balance.
  • An industrial furnace 1 with a furnace housing 1.1 as shown schematically as a vacuum furnace, preferably a single-chamber vacuum furnace, comprises a heating chamber 1.2, a heat exchanger 4 and a blower 3.
  • a heating chamber 1.2 preferably a single-chamber vacuum furnace
  • a heat exchanger 4 preferably a single-chamber vacuum furnace
  • a recooling chamber 1.5 which encloses the heat exchanger 4, wherein wall 1.8 with the central opening 1.8.1 as well as the peripheral openings 1.8.2 forms an alternating flow direction acted upon open partition.
  • a transverse to the flow direction linearly movable bulkhead 1.9 is operatively connected, in a first position 1.9.1 to a first space 1.1.1 of the furnace housing 1.1 as a suction chamber and a second space 1.1.2 as a pressure chamber or in a second position to the first Room 1.1.1 as a pressure chamber and the second space 1.1.2 as a suction chamber in operative connection.
  • the open hatches () upstream Gas directing 2 which are formed by a frame 2.1 with spaced, inflow surfaces 2.2 with free edges, perfect the device and share an original flow direction in between the areas 2.2 deflected flow directions and direct them to one in the Heating chamber 1.2 charge 1.4.
  • the cooling / quenching phase is initiated after completion of a heating phase for the batch 1.4 in the heating chamber 1.2 of the furnace housing 1.1, wherein by means of the blower 3 and acting in the mutual flow direction device first sucked the gas from the hot heating chamber 1.2 and the heat exchanger 4 cooled and then redirected by the alternately acting gas distributor as the cooling gas of the batch 1.4.
  • the heated gas is sucked by the fan 3 through the first space 1.1.1 and cooled and then passed as a cooling gas through the second space 1.1.2 back to the heating chamber 1.2, depending on the position of the movable bulkhead 1.9, the mutually acting flow direction is set ,
  • the flow path is shown schematically by arrows 5 and is intended in particular the complex course of the rectification formed in the re-cooling chamber 1.5,
  • the invention allows compared to the prior art, a more homogenized and both the cooling intensity improving and energy consumption reducing deflection of the flow of gases such as cooling gases in industrial furnaces such as vacuum furnaces in the

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif destinés à guider un écoulement de gaz au cours du processus de traitement thermique d'une charge de matériaux/pièces métalliques dans un four industriel. L'objectif de l'invention est d'améliorer les conditions d'écoulement. A cet effet, le gaz réchauffé aspiré est réparti de façon homogène dans une chambre de refroidissement en circuit fermé et guidé au moyen d'une cloison mobile vers une chambre de pression et vers une chambre d'aspiration, le gaz guidé en direction d'un écoulement initial étant guidé directement sur la charge par décollement des filets d'air, puis à nouveau aspiré et ramené à la chambre de chauffe inversement sous forme de gaz de refroidissement.
EP10779212.9A 2010-09-24 2010-09-24 Procédé et dispositif destinés à guider un écoulement dans des fours industriels pour le traitement thermique de matériaux/pièces métalliques Withdrawn EP2622107A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2010/001128 WO2012037905A1 (fr) 2010-09-24 2010-09-24 Procédé et dispositif destinés à guider un écoulement dans des fours industriels pour le traitement thermique de matériaux/pièces métalliques

Publications (1)

Publication Number Publication Date
EP2622107A1 true EP2622107A1 (fr) 2013-08-07

Family

ID=44123355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10779212.9A Withdrawn EP2622107A1 (fr) 2010-09-24 2010-09-24 Procédé et dispositif destinés à guider un écoulement dans des fours industriels pour le traitement thermique de matériaux/pièces métalliques

Country Status (2)

Country Link
EP (1) EP2622107A1 (fr)
WO (1) WO2012037905A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288798B (zh) * 2015-10-31 2018-08-28 自贡长城装备技术有限责任公司 具有快速冷却功能的压力烧结炉
CN107988474A (zh) * 2017-12-19 2018-05-04 上海先越冶金技术股份有限公司 一种具有多样性流道的真空高压气淬炉
CN110791625B (zh) * 2019-10-14 2021-03-26 重庆奇庆机电有限公司 一种带底部推拉装置的小型智能式热处理炉
CN114657356B (zh) * 2022-04-01 2023-11-07 江苏金源高端装备股份有限公司 一种温度可多点传感与智能控制的零部件锻造用热处理炉

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754768B1 (fr) 1995-07-21 2001-06-13 Ipsen International GmbH Four pour le traitement thermique de charges de pièces métalliques
JP5201127B2 (ja) 2003-01-31 2013-06-05 株式会社Ｉｈｉ 熱処理装置
US7625204B2 (en) 2003-06-27 2009-12-01 Ihi Corporation Gas cooling type vacuum heat treating furnace and cooling gas direction switching device therefor
JP4441903B2 (ja) 2003-07-11 2010-03-31 株式会社Ｉｈｉ 高速循環ガス冷却式真空熱処理炉
WO2006030504A1 (fr) * 2004-09-16 2006-03-23 Ishikawajima-Harima Heavy Industries Co., Ltd. Équipement de commutation de passage de gaz de refroidissement pour four de traitement thermique sous vide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012037905A1 *

Also Published As

Publication number Publication date
WO2012037905A1 (fr) 2012-03-29

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