EP0829554A1 - Installation pour la cémentation à basse pression avec des compartiments disposés les unes après les autres - Google Patents

Installation pour la cémentation à basse pression avec des compartiments disposés les unes après les autres Download PDF

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Publication number
EP0829554A1
EP0829554A1 EP97890166A EP97890166A EP0829554A1 EP 0829554 A1 EP0829554 A1 EP 0829554A1 EP 97890166 A EP97890166 A EP 97890166A EP 97890166 A EP97890166 A EP 97890166A EP 0829554 A1 EP0829554 A1 EP 0829554A1
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EP
European Patent Office
Prior art keywords
chamber
gas
carburizing
pressure
batches
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
EP97890166A
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German (de)
English (en)
Other versions
EP0829554B2 (fr
EP0829554B1 (fr
Inventor
Herwig Dr. Altena
Johann Ing. Berger
Josef Ing. Krickl
Gerhard Oberweger
Gerhard Ing. Sack
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ALD AICHELIN GesmbH
Original Assignee
ALD AICHELIN GesmbH
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Application filed by ALD AICHELIN GesmbH filed Critical ALD AICHELIN GesmbH
Publication of EP0829554A1 publication Critical patent/EP0829554A1/fr
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Publication of EP0829554B1 publication Critical patent/EP0829554B1/fr
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    • 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
    • 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
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
    • 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
    • C23C8/22—Carburising of ferrous surfaces

Definitions

  • Continuous roller hearth furnaces are also known, in which one Gas cooling section is provided between an annealing and a hardening zone (DE 42 28 006).
  • the combination according to the invention makes it conventional Gas carburizing plants achieved a carburization free of edge oxidation, whereby Post-processing costs can be reduced or even eliminated. Moreover the carburizing time is reduced due to a significantly higher C mass flow at the start of the process, which saves time and money. Compared to oil quenching, there is the advantage that a reduced Delay occurs and that both the washing process after the oil quench as there is also no oil disposal.
  • the formation of the transport organs as a roller conveyor brings about other transport systems a lower mechanical effort and thus less susceptibility to repairs and also less mechanical Vibrations during transportation of the hot batch.
  • roller conveyor Another disadvantage of the roller conveyor can arise from the fact that the rollers are carried out according to the prior art through the insulation, stored outside the insulation and driven outside the boiler, which leads to a not negligible heat dissipation through heat conduction over the Transport roles leads. On the one hand, this causes a higher energy requirement System and on the other hand deteriorates the temperature uniformity in the Treatment chambers.
  • the transport rollers According to the invention held by ceramic or graphite bearings, which are within the hot heating, carburizing and diffusion chamber are located on the the underlying insulation.
  • the implementation to the transport engine is only carried out with a thin drive shaft that does not transmit any bending moment got to. These measures minimize energy losses.
  • the quenching chamber is expedient followed by a Röllchenherd tempering furnace.
  • FIG. 1 shows an elevation according to the invention in elevation Low pressure carburizing plant
  • Fig. 2 is a top view of the low pressure carburizing plant 1
  • FIGS. 3 and 4 cross sections of a Quench chamber usable within the scope of the invention.
  • Figures 5,6 and 7 give Variants of the transport rollers again.
  • the batches 4 After leaving the quenching chamber 17, the batches 4 pass over a transverse drive device 18 to a Röllchenherd tempering furnace 19 and leave after passing through a cooling section 20 and an outlet roller table 21, the system.
  • a preferred embodiment of the quenching chamber 17 is shown in section in FIG. 3 shown.
  • a motor 32 is placed on a housing 31, which drives a fan wheel 33.
  • a fan wheel 33 Within the lower part 34 one in the housing Batch 4 lies on the 31 round or square jacket Transport rollers 22.
  • the jacket expands upwards and inside the extended part 37, a heat exchanger 38 is arranged. This heat exchanger However, 38 does not take up the entire space within part 37 of the shell so that a free cross section 39 is formed.
  • a control valve 41 can be installed, which uses the pressure difference between bypass and immediately behind the heat exchanger on level 2 is controlled in such a way that the cooling time of the batch is minimized.
  • the measured flap can be used to determine the optimal flap position Evaluation unit (computer) can be connected.
  • the quenching chamber 17 can be designed with lowerable transport rollers, the place the batch on a fixed batch carrier, the number of Carburizing chambers could be two and the number of diffusion chambers could be three deviate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Tunnel Furnaces (AREA)
EP97890166A 1996-09-16 1997-08-19 Installation pour la cémentation à basse pression avec des compartiments disposés les unes après les autres Expired - Lifetime EP0829554B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT163596 1996-09-16
AT1635/96 1996-09-16
AT0163596A AT404029B (de) 1996-09-16 1996-09-16 Niederdruck-aufkohlungsanlage

Publications (3)

Publication Number Publication Date
EP0829554A1 true EP0829554A1 (fr) 1998-03-18
EP0829554B1 EP0829554B1 (fr) 2000-04-26
EP0829554B2 EP0829554B2 (fr) 2004-05-12

Family

ID=3517678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97890166A Expired - Lifetime EP0829554B2 (fr) 1996-09-16 1997-08-19 Installation pour la cémentation à basse pression avec des compartiments disposés les unes après les autres

Country Status (3)

Country Link
EP (1) EP0829554B2 (fr)
AT (1) AT404029B (fr)
DE (1) DE59701501D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612291A1 (fr) * 2004-06-25 2006-01-04 Fuji Jukogyo Kabushiki Kaisha Four mulit-étages et procédé pour la carburation en continue et la trempe
CN108315544A (zh) * 2018-04-08 2018-07-24 亚捷科技（唐山）股份有限公司 一种氨基气氛辊棒炉生产系统
CN110835722A (zh) * 2019-11-27 2020-02-25 特诺恩技术（天津）有限公司 一种用于齿轮渗碳热处理的滑动密封炉门
CN110846612A (zh) * 2019-12-03 2020-02-28 上海丰东热处理工程有限公司 一种真空渗碳热处理加工工艺
CN114293136A (zh) * 2021-12-31 2022-04-08 重庆市星极齿轮有限责任公司 一种工件热处理系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020449A1 (de) * 2008-04-01 2009-10-15 Manfred Husslein Industrieofen sowie Verfahren zum Betrieb eines Industrieofens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1208134A (en) * 1967-03-22 1970-10-07 Gibbons Brothers Ltd Improvements in or relating to continuous carburising
FR2083484A1 (fr) * 1970-03-23 1971-12-17 Holcroft & Co
JPS58130270A (ja) * 1982-01-27 1983-08-03 Michio Sugiyama 連続真空浸炭炉とその操業方法
EP0147845A2 (fr) * 1983-12-27 1985-07-10 Chugai Ro Co., Ltd. Procédé de carburation et de durcissement gazeux et four continu pour la réalisation de ce procédé
JPS60190511A (ja) * 1984-03-13 1985-09-28 Ishikawajima Harima Heavy Ind Co Ltd 金属熱処理設備
DE29505496U1 (de) * 1995-03-31 1995-06-01 Ipsen Ind Int Gmbh Vorrichtung zur Wärmebehandlung metallischer Werkstücke unter Vakuum
EP0723034A2 (fr) * 1995-01-20 1996-07-24 Dowa Mining Co., Ltd. Procédé et appareil de cémentation gazeuse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678287B1 (fr) * 1991-06-26 1993-10-29 Etudes Constructions Mecaniques Procede et four de cementation a basse pression.
JPH055852U (ja) † 1991-07-02 1993-01-26 中外炉工業株式会社 多室式ローラハース型イオン浸炭炉
FR2681332B1 (fr) * 1991-09-13 1994-06-10 Innovatique Sa Procede et dispositif de cementation d'un acier dans une atmosphere a basse pression.
EP0626467B1 (fr) * 1992-10-15 1997-05-21 Kawasaki Steel Corporation Procede permettant de cementer en continu un feuillard d'acier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1208134A (en) * 1967-03-22 1970-10-07 Gibbons Brothers Ltd Improvements in or relating to continuous carburising
FR2083484A1 (fr) * 1970-03-23 1971-12-17 Holcroft & Co
JPS58130270A (ja) * 1982-01-27 1983-08-03 Michio Sugiyama 連続真空浸炭炉とその操業方法
EP0147845A2 (fr) * 1983-12-27 1985-07-10 Chugai Ro Co., Ltd. Procédé de carburation et de durcissement gazeux et four continu pour la réalisation de ce procédé
JPS60190511A (ja) * 1984-03-13 1985-09-28 Ishikawajima Harima Heavy Ind Co Ltd 金属熱処理設備
EP0723034A2 (fr) * 1995-01-20 1996-07-24 Dowa Mining Co., Ltd. Procédé et appareil de cémentation gazeuse
DE29505496U1 (de) * 1995-03-31 1995-06-01 Ipsen Ind Int Gmbh Vorrichtung zur Wärmebehandlung metallischer Werkstücke unter Vakuum

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 242 (C - 192) 27 October 1983 (1983-10-27) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 043 (C - 329) 20 February 1986 (1986-02-20) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612291A1 (fr) * 2004-06-25 2006-01-04 Fuji Jukogyo Kabushiki Kaisha Four mulit-étages et procédé pour la carburation en continue et la trempe
CN108315544A (zh) * 2018-04-08 2018-07-24 亚捷科技（唐山）股份有限公司 一种氨基气氛辊棒炉生产系统
CN110835722A (zh) * 2019-11-27 2020-02-25 特诺恩技术（天津）有限公司 一种用于齿轮渗碳热处理的滑动密封炉门
CN110835722B (zh) * 2019-11-27 2023-08-25 特诺恩技术（天津）有限公司 一种用于齿轮渗碳热处理的滑动密封炉门
CN110846612A (zh) * 2019-12-03 2020-02-28 上海丰东热处理工程有限公司 一种真空渗碳热处理加工工艺
CN114293136A (zh) * 2021-12-31 2022-04-08 重庆市星极齿轮有限责任公司 一种工件热处理系统

Also Published As

Publication number Publication date
ATA163596A (de) 1997-12-15
DE59701501D1 (de) 2000-05-31
EP0829554B2 (fr) 2004-05-12
AT404029B (de) 1998-07-27
EP0829554B1 (fr) 2000-04-26

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