EP1063323A2 - Procédé de revêtement d'une piece avec un lubrifiant - Google Patents

Procédé de revêtement d'une piece avec un lubrifiant Download PDF

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Publication number
EP1063323A2
EP1063323A2 EP00104754A EP00104754A EP1063323A2 EP 1063323 A2 EP1063323 A2 EP 1063323A2 EP 00104754 A EP00104754 A EP 00104754A EP 00104754 A EP00104754 A EP 00104754A EP 1063323 A2 EP1063323 A2 EP 1063323A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
pearl
workpiece
coating
molybdenum disulfide
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Withdrawn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
EP00104754A
Other languages
German (de)
English (en)
Other versions
EP1063323A3 (fr
Inventor
Marco Santini
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.)
Aalberts Process Technologies Haerkingen AG
Original Assignee
Duralloy AG
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 Duralloy AG filed Critical Duralloy AG
Publication of EP1063323A2 publication Critical patent/EP1063323A2/fr
Publication of EP1063323A3 publication Critical patent/EP1063323A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/10—Bearings
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces

Definitions

  • the invention relates to a method for coating a workpiece with a lubricant based on molybdenum sulfide.
  • Molybdenum disulphide (MoS 2 ) is a graphite-like substance that is used as a dry lubricant and in compound lubricants due to its excellent sliding properties.
  • the molybdenide disulfide is usually applied in a solvent mixture in liquid form.
  • the layer thickness that arises after drying is between about 5 ⁇ to 15 ⁇ under tribological stress. It is suitable for high pressure and temperature loads and is mainly used to improve the inlet.
  • This object is achieved in that the workpiece cleaned in a known manner before coating with molybdenum disulfide and is activated and that it is then a galvanic chrome plating bath is exposed to form a coating of hard chrome a hardness of at least 600 HV with pearl or columnar structure Surface and that this pearl or columnar structure-like surface due to the subsequently applied lubricant based on molybdenum disulfide is filled in and smoothed.
  • the pearl-like or columnar structure Surface of the hard chrome underlayer has an extraordinarily high adhesive effect on the molybdenum disulfide.
  • the molybdenum disulfide as far as it projects above the lower hard chrome layer, in practical operation in a kind of running-in process within a short time depending on the application and Load is compressed such that the upper ends of the pearl or Column structure are exposed more or less and as highly resilient Act as wings for the counterpart to be stored.
  • the hard chrome coating with a pearl or columnar structure-like surface is expediently carried out in accordance with German patent 25 02 284. There, a chrome plating bath is described with which shiny to metal-gray chrome coatings with a pearl structure-like surface and a hardness of up to approximately 1500 HV can be achieved. These chrome coatings with the trade name Duralloy "are characterized by high wear resistance.
  • the coating according to the invention with molybdenum disulfide galvanic deposition is unsuitable. Instead, it is recommended mix the lubricant with a carrier liquid and apply it in liquid form, such as brushing or spraying.
  • the molybdenum disulfide can be present in an air-drying solvent, this Solvents in particular ester, butyl acetate and, if appropriate contains inorganic binder.
  • the lubricant should be applied in such a thickness that the molybdenum disulfide remaining after drying has a layer thickness reached from 5 ⁇ to 15 ⁇ .
  • the lubricant vaporized in a vacuum or using sputter technology or gas discharge technology is applied.
  • PVD process physical waper deposition process
  • CVD chemical Vapor deposition
  • the coating by the so-called Arc technology This is done by an electrical Arc Moliband disulphide and other ions are ejected from a source, so that they deposit on the workpiece to be coated.
  • the starting point is a metallic workpiece that is initially thermal with a maximum of 70 ° C and degreased electrolytically and then by a 5% sulfuric acid stain from basic to acidic is transferred to it for subsequent galvanic treatment activate.
  • the workpiece is then immersed in a chrome plating bath the 400 to 500 g / l chromium trioxide, 2 to 4 g / l strontium sulfate, 4 to 26 g / l Potassium silicofluoride, 2 to 8 g / l potassium dichromate and 4 to 50 g / l technical Contains 2,2-dichloromonic acid.
  • the other treatment parameters reference is made to the already mentioned German patent 25 02 284.
  • the workpiece 1 thus contains a hard chrome coating 2 with a layer thickness of at least 2 ⁇ , preferably about 4 - 6 ⁇ or more.
  • the bath parameters are set so that the Surface of the hard chrome layer a more or less regular Pearl structure 2a with a roughness depth of at least about 1 ⁇ , preferably sets about 1.5 ⁇ to about 5 ⁇ .
  • the workpiece is rinsed to remove the remains of the Remove chrome baths.
  • molybdenum disulfide which is in a solvent mixture with inorganic Binder is in liquid form, by brushing or applied to the pearl structure 2a by spraying.
  • the order should be in such an amount that the pearl structure 2a of the hard chrome layer at least is filled in and leveled, expediently also a certain one Coverage is obtained, as is the case with the molybdenum disulfide layer shown in FIG 3 is the case.
  • Layer 3 is cured in about 30 minutes at room temperature.
  • the Molibdändisulfid can also by atomization in a vacuum be applied to the pearl structure.
  • FIG. 2 shows the final state of the two-layer system according to the invention, how it comes after a short break-in period.
  • Coverage of the molybdenum disulfide layer removed and in the pearl structure has been compacted into being approximately flush with the upper ones Ends of the pearl structure 2a runs.
  • You get a coherent Molybdenum disulfide phase from a variety of hard chrome islands is enforced. It has no pores or cracks and is therefore also highly corrosion-resistant.
  • Workpieces coated according to the invention are for all sliding and roller bearings, also suitable spindles or the like, where it is low Friction arrives with a long service life.
EP00104754A 1999-06-24 2000-03-04 Procédé de revêtement d'une piece avec un lubrifiant Withdrawn EP1063323A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19929090 1999-06-24
DE19929090A DE19929090A1 (de) 1999-06-24 1999-06-24 Verfahren zur Beschichtung eines Werkstückes mit einem Schmierstoff

Publications (2)

Publication Number Publication Date
EP1063323A2 true EP1063323A2 (fr) 2000-12-27
EP1063323A3 EP1063323A3 (fr) 2004-01-07

Family

ID=7912478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104754A Withdrawn EP1063323A3 (fr) 1999-06-24 2000-03-04 Procédé de revêtement d'une piece avec un lubrifiant

Country Status (4)

Country Link
US (1) US6355366B1 (fr)
EP (1) EP1063323A3 (fr)
JP (1) JP2001046964A (fr)
DE (1) DE19929090A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2298456A1 (fr) * 2009-09-10 2011-03-23 Bharat Forge Aluminiumtechnik GMBH & CO. KG Procédé d'application de lubrifiant sur un matériau de forgeage

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10121593A1 (de) * 2001-05-03 2002-11-07 Duralloy Ag Haerkingen Verfahren zur Beschichtung von Werkstücken mit einem Lagermetall
US6923692B2 (en) * 2002-04-22 2005-08-02 Yazaki Corporation Electrical connectors incorporating low friction coatings and methods for making them
DE10255853A1 (de) * 2002-11-29 2004-06-17 Federal-Mogul Burscheid Gmbh Herstellung strukturierter Hartchromschichten
US20050133651A1 (en) * 2003-10-31 2005-06-23 Chung Cheung Fishing reel gear mechanism coating
KR20050063463A (ko) * 2003-12-22 2005-06-28 재단법인 포항산업과학연구원 윤활특성이 우수한 경질코팅 제조방법 및 경질코팅 구조
DE102004019370B3 (de) * 2004-04-21 2005-09-01 Federal-Mogul Burscheid Gmbh Herstellung einer strukturierten Hartchromschicht und Herstellung einer Beschichtung
JP2006096841A (ja) * 2004-09-29 2006-04-13 Thk Co Ltd 固体潤滑膜およびその製造方法、固体潤滑膜が成膜される転がり摺動部材
JP5078146B2 (ja) * 2008-02-29 2012-11-21 株式会社パイロットコーポレーション 振出式シャープペンシル
DE102008017270B3 (de) * 2008-04-04 2009-06-04 Federal-Mogul Burscheid Gmbh Strukturierte Chrom-Feststoffpartikel-Schicht und Verfahren zu deren Herstellung sowie beschichtetes Maschinenelement
DE102012009400B4 (de) 2012-05-10 2014-02-13 Sfs Intec Holding Ag Bohrschraube und deren verwendung
JP6808560B2 (ja) * 2017-04-03 2021-01-06 株式会社豊田中央研究所 摺動システム
DE102017128700B3 (de) 2017-12-04 2019-01-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh Rollstab, Rollstabaggregat, Verfahren zum Herstellen eines Rollstabes und kontinuierliche Presse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152171A (en) * 1979-05-15 1980-11-27 Seiko Epson Corp Small size precision silding parts
EP0277057A1 (fr) * 1987-01-16 1988-08-03 Abg Semca S.A. Palier ou butée hydrodynamique en particulier palier à feuilles
JPH05125625A (ja) * 1991-10-31 1993-05-21 Kanai Hiroyuki 紡機用リング
JPH06137432A (ja) * 1992-10-29 1994-05-17 Riken Corp ピストンリング及びその製造方法
DE19529843A1 (de) * 1995-08-12 1997-02-13 Marco Santini Verfahren zur galvanischen Verchromung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130435A (ja) * 1982-01-29 1983-08-03 Fuji Photo Film Co Ltd 磁気記録媒体
JPH07113401B2 (ja) * 1991-01-30 1995-12-06 株式会社東芝 真空環境用歯車伝達機構

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152171A (en) * 1979-05-15 1980-11-27 Seiko Epson Corp Small size precision silding parts
EP0277057A1 (fr) * 1987-01-16 1988-08-03 Abg Semca S.A. Palier ou butée hydrodynamique en particulier palier à feuilles
JPH05125625A (ja) * 1991-10-31 1993-05-21 Kanai Hiroyuki 紡機用リング
JPH06137432A (ja) * 1992-10-29 1994-05-17 Riken Corp ピストンリング及びその製造方法
DE19529843A1 (de) * 1995-08-12 1997-02-13 Marco Santini Verfahren zur galvanischen Verchromung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 024 (C-043), 13. Februar 1981 (1981-02-13) & JP 55 152171 A (SEIKO EPSON CORP), 27. November 1980 (1980-11-27) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 492 (C-1107), 7. September 1993 (1993-09-07) & JP 05 125625 A (HIROYUKI KANAI), 21. Mai 1993 (1993-05-21) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 446 (M-1659), 19. August 1994 (1994-08-19) & JP 06 137432 A (RIKEN CORP), 17. Mai 1994 (1994-05-17) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2298456A1 (fr) * 2009-09-10 2011-03-23 Bharat Forge Aluminiumtechnik GMBH & CO. KG Procédé d'application de lubrifiant sur un matériau de forgeage

Also Published As

Publication number Publication date
US6355366B1 (en) 2002-03-12
DE19929090A1 (de) 2000-12-28
EP1063323A3 (fr) 2004-01-07
JP2001046964A (ja) 2001-02-20

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