EP1391525A1 - Procédé et dispositif pour noircir des composants - Google Patents

Procédé et dispositif pour noircir des composants Download PDF

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Publication number
EP1391525A1
EP1391525A1 EP03014657A EP03014657A EP1391525A1 EP 1391525 A1 EP1391525 A1 EP 1391525A1 EP 03014657 A EP03014657 A EP 03014657A EP 03014657 A EP03014657 A EP 03014657A EP 1391525 A1 EP1391525 A1 EP 1391525A1
Authority
EP
European Patent Office
Prior art keywords
carbon
treatment room
treatment
heat treatment
mbar
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Withdrawn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
EP03014657A
Other languages
German (de)
English (en)
Inventor
Wolfgang Dr. Lerche
Hansjakob Drissen
Winfried Gräfen
Walter Ooster
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 EP1391525A1 publication Critical patent/EP1391525A1/fr
Withdrawn legal-status Critical Current

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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
    • C23C8/22—Carburising of ferrous surfaces
    • 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
    • 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

Definitions

  • the invention relates to a method for blackening components. Furthermore The invention relates to a device with which the method according to the invention can be carried out.
  • Black surfaces are oxidative processes within gaseous atmospheres or liquid media as well as around galvanic treatments. Black surfaces are created to For example, to obtain an attractive surface of the component To make the surface more corrosion-resistant, for example against rust, and to achieve a higher abrasion resistance.
  • EP 0 655 512 B1 discloses a process for producing uniform oxidation layers on metallic workpieces following a nitriding or nitrocarburizing process, in which the workpieces are exposed to an oxidizing atmosphere for a predetermined time after nitriding or nitrocarburizing at a given temperature.
  • the outer peripheral layer of the workpiece which essentially consists of iron nitrides or carbonitrides, is converted into a thin iron oxide layer.
  • the aim is a layer of Fe 3 O 4 . This layer has a black color.
  • the disadvantage here is that the separate aftertreatment represents an additional work step.
  • DE 43 33 940 C1 describes a method for treating parts, especially steel and / or castings, known in which a blackened Surface is created by introducing the parts in an oven or atomizing a reducing and oxidizing reaction gas Hardening temperatures in the furnace chamber are oxidized and hardened at the same time.
  • the disadvantage here is that the direct introduction in the hot state Loading of the furnace arises. Furthermore, to prevent premature oxidation during heating to prevent the part from a veil of flame be surrounded.
  • Another way to blacken surfaces is to: After tempering, the workpiece is quenched in an emulsion, causing the oxidized surface is blackened.
  • the disadvantage here is that an additional Process step must be carried out that the emulsion against attack must be protected from microbes and only by expensive, additional Treatment measures can be disposed of.
  • the oxide layers have a Have a tendency to flake off if the oxide layer is too thick or none there is sufficient adhesion between the oxide layer and the surface.
  • the invention is therefore based on the object of providing a method for blackening surfaces which, without an additional method step, creates black surfaces which do not tend to flake off. No liquids or baths that are expensive to manufacture, maintain and dispose of should be used. Furthermore, an apparatus for performing this method is to be created.
  • the solution of the object according to the invention provides that the surface within a treatment room is subjected to a heat treatment with simultaneous supply of a carbon-emitting medium.
  • the surface of the component already in the treatment room is brought into contact with carbon. This is caused by splitting the carbon-donating medium. The splitting takes place through the supply of heat.
  • the carbon reacts with the surface of the component and blackens it.
  • the disadvantages cited above are advantageously avoided deep black surfaces created. With this procedure you can especially black surfaces on tools that have a hardness after hardening under certain circumstances have an unsightly surface. Furthermore the corrosion resistance of the components can also be increased. Since the Obtaining surfaces with a "satin-like" shine can very well durable, decorative surfaces, for example for housings from Stereo systems or other metal parts that, in addition to functionality, also have one Have design function, be created.
  • An advantageous embodiment of the invention provides that the Heat treatment is carried out under low pressure.
  • the Move the low pressure in a range from 0.1 mbar to 15 mbar.
  • low pressure allows a cheaper metering of the carbon content in the furnace, what prevents sooting of the furnace space.
  • the proportion of the carbon-emitting medium too high which is inevitably disadvantageous leads to sooting of the furnace space. So that's the cost of that carbon-emitting medium higher and the furnace must be sooted regularly to ensure an optimal process.
  • the heat treatment itself can be carried out at a temperature of 200 ° C to 700 ° C be performed. In this temperature range, a good implementation of the Carbon reached with the surface of the component.
  • The is preferably Temperature 300 ° C to 570 ° C, particularly preferably from 350 ° C to 475 ° C. Die
  • the duration of the heat treatment can vary by varying the temperature and / or the pressure can be regulated.
  • the carbon content itself can be within of the treatment room can be regulated by varying the pressure.
  • the Regulation may be necessary to change the atmosphere in the To reach the treatment room over the duration of the treatment.
  • the carbon-emitting medium can be gaseous in the treatment room be initiated.
  • a liquid feed is also possible.
  • carbon donating medium may include hydrocarbons, in particular Acetylene, carbon monoxide or a mixture thereof can be supplied. This Fabrics are suitable as a carbon supplier due to their good splittability. However, other substances are also conceivable as a carbon-donating medium.
  • the invention provides for carrying out the method according to the invention Device with a heatable treatment room and a device for regulated supply of the carbon-emitting medium.
  • the Treatment room can be evacuated.
  • To evacuate the Treatment room can be a device, in particular a Vacuum pump can be provided.
  • one Monitoring device for the carbon content in the atmosphere of the Treatment room can be provided to a controlled supply of to obtain carbon-emitting medium.
  • a furnace can be provided as the treatment room.
  • the oven can Have lining.
  • This lining can be made of metal. Of these, should be avoided if there are catalytic surfaces. In such cases, the lining should not be metallic.
  • the lining can be designed to be interchangeable to prevent any To be able to eliminate soot.
  • the single figure shows a diagram according to the invention Contraption.
  • a furnace chamber 1 of a vacuum furnace there is a component 2, the Surface to be blackened.
  • the surfaces to be blackened Component 2 are untreated.
  • a heating unit 3 is used in the furnace chamber 1 generates a temperature of 450 °.
  • a vacuum pump 4 Pressure in the furnace chamber 1 reduced to a pressure of 5 mbar.
  • Acetylene (C 2 H 2 ) is supplied to the furnace chamber 1 as a carbon-emitting medium via a feed unit 5.
  • the acetylene is split up in the furnace chamber 1. Carbon is released into the atmosphere in the furnace chamber 1. The carbon comes into contact with the surface of component 2 and causes blackening.
  • the carbon content of the atmosphere is monitored via a monitoring sensor 6 Oven chamber 1 monitored. Via a connection (not shown) with the Feed unit 5, the monitoring sensor 6 controls the supply of the carbon-emitting medium to set an optimal concentration too can. The carbon content is adjusted so that sooting of the Oven chamber walls are avoided if possible. Towards the end of the treatment period the addition of acetylene is reduced in order to make optimum use of the Carbon. After a treatment time of two hours, the remaining atmosphere is suctioned off and in the furnace chamber again Ambient pressure. Furthermore, the furnace chamber and the component 2 so that the device is immediately available for the next process is cooled as quickly as possible, which does not change the properties of the blackened component 2 results. Subsequently, the component 2 with blackened surface of the furnace chamber 1 can be removed. The on this Surface blackening generated in this way is adherent, which means Abrasion tests have been demonstrated.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP03014657A 2002-08-01 2003-06-27 Procédé et dispositif pour noircir des composants Withdrawn EP1391525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10235131 2002-08-01
DE10235131A DE10235131A1 (de) 2002-08-01 2002-08-01 Verfahren und Vorrichtung zum Schwärzen von Bauteilen

Publications (1)

Publication Number Publication Date
EP1391525A1 true EP1391525A1 (fr) 2004-02-25

Family

ID=30469300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014657A Withdrawn EP1391525A1 (fr) 2002-08-01 2003-06-27 Procédé et dispositif pour noircir des composants

Country Status (5)

Country Link
US (2) US7160576B2 (fr)
EP (1) EP1391525A1 (fr)
JP (1) JP2004068154A (fr)
CN (1) CN1483854A (fr)
DE (1) DE10235131A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100641648B1 (ko) 2004-08-31 2006-11-03 주식회사 진성티이씨 실 흑화 장치 및 방법
KR101866754B1 (ko) * 2016-10-31 2018-06-18 한국생산기술연구원 저압 범위 내에서의 침탄방법

Citations (5)

* Cited by examiner, † Cited by third party
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DE2636273A1 (de) * 1976-08-12 1978-02-16 Ipsen Ind Int Gmbh Verfahren zur regelung des aufkohlens von teilen in einem vakuumofen
US4472209A (en) * 1980-10-08 1984-09-18 Linde Aktiengesellschaft Carburizing method
EP0818555A1 (fr) * 1995-03-29 1998-01-14 JH Corporation Procede et equipement de cementation, et produits de cette operation
EP0882811A1 (fr) * 1997-06-03 1998-12-09 Ipsen International GmbH Procédé de cémentation de pièces métalliques dans un four sous vide
EP1193413A1 (fr) * 2000-03-17 2002-04-03 Nsk Ltd., Dispositif de support a roulement et procede de fabrication dudit dispositif

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US3892890A (en) * 1972-05-12 1975-07-01 Hitachi Ltd Process for forming carbon coatings
US4060660A (en) * 1976-01-15 1977-11-29 Rca Corporation Deposition of transparent amorphous carbon films
US4049473A (en) * 1976-03-11 1977-09-20 Airco, Inc. Methods for carburizing steel parts
JPS5713170A (en) * 1980-06-27 1982-01-23 Oriental Eng Kk Gas carburizing method
DE3301197A1 (de) * 1983-01-15 1984-07-19 Akzo Gmbh, 5600 Wuppertal Polyimid-laminate mit hoher schaelfestigkeit
GB8310102D0 (en) * 1983-04-14 1983-05-18 Lucas Ind Plc Corrosion resistant steel components
DE3411605C2 (de) * 1984-03-29 1986-07-17 Joachim Dr.-Ing. 7250 Leonberg Wünning Verfahren und Einrichtung zur Gasaufkohlung von Stahl
JPH0791566B2 (ja) * 1985-06-24 1995-10-04 株式会社島津製作所 焼結炉の処理物収納内室
JP4451536B2 (ja) * 2000-04-06 2010-04-14 シチズンホールディングス株式会社 装飾部材およびその製造方法
FR2663953B1 (fr) * 1990-07-02 1993-07-09 Aubert & Duval Acieries Procede et installation de cementation de pieces en alliage metallique a basse pression.
JPH0718528A (ja) * 1993-06-28 1995-01-20 Kanai Hiroyuki 紡機用リングの製造方法
DE4333940C1 (de) 1993-10-06 1994-12-08 Messer Griesheim Gmbh Verfahren zum Behandeln von Teilen
DE4339404A1 (de) 1993-11-18 1995-05-24 Ipsen Ind Int Gmbh Verfahren zur Herstellung einheitlicher Oxidationsschichten auf metallischen Werkstücken und Vorrichtung zur Durchführung des Verfahrens
US5558908A (en) * 1994-11-07 1996-09-24 Lanxide Technology Company, Lp Protective compositions and methods of making same
JP3064907B2 (ja) * 1995-06-27 2000-07-12 エア・ウォーター株式会社 浸炭硬化締結用品およびその製法
JP3388510B2 (ja) * 1995-12-28 2003-03-24 同和鉱業株式会社 耐食、耐摩耗鋼及びその製造方法
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WO2000075522A1 (fr) * 1999-06-04 2000-12-14 Nsk Ltd. Dispositif a palier et procede de fabrication d'un tel dispositif
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636273A1 (de) * 1976-08-12 1978-02-16 Ipsen Ind Int Gmbh Verfahren zur regelung des aufkohlens von teilen in einem vakuumofen
US4472209A (en) * 1980-10-08 1984-09-18 Linde Aktiengesellschaft Carburizing method
EP0818555A1 (fr) * 1995-03-29 1998-01-14 JH Corporation Procede et equipement de cementation, et produits de cette operation
EP0882811A1 (fr) * 1997-06-03 1998-12-09 Ipsen International GmbH Procédé de cémentation de pièces métalliques dans un four sous vide
EP1193413A1 (fr) * 2000-03-17 2002-04-03 Nsk Ltd., Dispositif de support a roulement et procede de fabrication dudit dispositif

Also Published As

Publication number Publication date
US20060150907A1 (en) 2006-07-13
DE10235131A1 (de) 2004-02-19
JP2004068154A (ja) 2004-03-04
US7160576B2 (en) 2007-01-09
CN1483854A (zh) 2004-03-24
US20040022944A1 (en) 2004-02-05

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