WO1993020264A1 - Verfahren zum herstellen von gleitlager-schichtwerkstoff oder gleitlager-schichtwerkstücken - Google Patents

Verfahren zum herstellen von gleitlager-schichtwerkstoff oder gleitlager-schichtwerkstücken Download PDF

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Publication number
WO1993020264A1
WO1993020264A1 PCT/DE1993/000229 DE9300229W WO9320264A1 WO 1993020264 A1 WO1993020264 A1 WO 1993020264A1 DE 9300229 W DE9300229 W DE 9300229W WO 9320264 A1 WO9320264 A1 WO 9320264A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
silvering
silver
stage
main
Prior art date
Application number
PCT/DE1993/000229
Other languages
German (de)
English (en)
French (fr)
Inventor
Helmut Tegebauer
Volker Falkowski
Original Assignee
Braunschweiger Hüttenwerk 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 Braunschweiger Hüttenwerk Gmbh filed Critical Braunschweiger Hüttenwerk Gmbh
Priority to EP93906428A priority Critical patent/EP0635073A1/de
Publication of WO1993020264A1 publication Critical patent/WO1993020264A1/de

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • 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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/127—Details of intermediate layers, e.g. nickel dams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/02—Noble metals
    • F16C2204/04—Noble metals based on silver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/70—Coating surfaces by electroplating or electrolytic coating, e.g. anodising, galvanising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to a method for producing plain bearing layer material or plain bearing layer workpieces, in which a binding layer made of silver and a sliding layer made of a lead-tin-copper or tin on a single-layer or multilayer carrier material or carrier workpiece -Antimony- plain bearing alloy (preferably lead-tin-copper alloy), galvanically attached.
  • the binding layer made of silver offers the advantage that it is considerably softer and less susceptible to seizure than the binding and diffusion barrier layer made of nickel or similar hard metallic materials, which has been widely used in the case of multilayer plain bearings.
  • the binding layer made of silver known from DE-AS 1 048 757 has the defect that it can only have a maximum thickness of 2.5 ⁇ m in order to retain sufficient binding to the thin zinc layer arranged underneath and the carrier layer made of aluminum material .
  • the galvanic application of the known binding layer made of silver is associated with critical working conditions, so that the binding layer made of silver known from DE-AS 1 048 757 could not prevail in practice.
  • the object of the invention is to create a method with which a galvanically applied bonding layer made of silver is thicker and more effective than before, in particular with regard to increased bonding strength on backing layers with emergency running properties, both on backing layers made of aluminum material as well as on carrier layers made of other materials, in particular bronze materials.
  • the bonding layer made of pure silver is galvanically applied in two successive stages of silver dissolved in cyanide, namely in a pre-silvering stage as a thin pre-silvering layer with a thickness of approximately 0.1 ⁇ m to approximately 0.5 ⁇ m and a main - Silvering stage as the actual silver layer with a thickness of approximately 2 ⁇ m to approximately 10 ⁇ m, whereby in the pre-silvering stage a much lower silver concentration is used than in the main silvering stage, but current density of approximately the same order of magnitude is set up in both stages.
  • the structure of the bonding layer according to the invention as a thin pre-silvering layer and the actual silver layer ensures that the pre-silvering layer ensures a secure bond on the carrier layer, while the actual silver layer forms a secure bonding basis for the sliding layer applied galvanically over it. This is achieved even though both partial layers have the same material structure made of pure silver. Due to the galvanic structure of a pre-silvering layer, the silver bonding layer can be adapted to support layers of various material structures. The adaptation between the pre-silvering layer and the actual silver layer is not critical due to the material of the two layers being the same, as is the binding property of the actual silver layer with the sliding layer electroplated thereon.
  • the galvanic silver plating baths used to build up the two sub-layers of the silver bonding layer preferably differ in their material composition only with regard to the silver concentration and the concentration of the free alkali cyanide used in addition to the cyanide-dissolved silver.
  • the concentration of the free alkali cyanide can thus lie between 50 g 1 and 200 g 1, it being possible to use a higher, preferably about 50% higher to twice the concentration of the free alkali cyanide in the main silvering stage.
  • Silver concentrations of between approximately 1 g / l and approximately 60 g / l can be provided in the silver plating baths, an approximately 10-fold to 20-fold silver concentration being used in the main silver-plating stage compared to that in the pre-silver-plating stage.
  • the pretreatment prior to the silvering step can be provided for carrier layers made of bronze material by pickling or electrical etching and pickling.
  • Pretreatment prior to pre-silvering can also be provided in the case of carrier layers made of aluminum material by pickling or electro-etching and pickling and then very thin pre-metallization.
  • carrier layers made of aluminum material such as aluminum alloy or aluminum dispersion alloy
  • a pre-treatment by pickling and acid immersion and subsequent immersion in an aluminum immersion liquid are preferred before the pre-silvering step, in order to deposit a very thin layer of at least one, preferably several, of the metals zinc, nickel, Make copper, iron.
  • carrier layers made of aluminum material such as aluminum alloy or aluminum dispersion alloy
  • the free alkali cyanide can also be sodium cyanide in one or the other or in both silver plating baths.
  • Preformed carrier workpieces for plain bearings with a steel backing and aluminum-tin dispersion alloy coating are degreased in organic solvent and then pickled in a solution of sulfuric acid, hydrofluoric acid and zinc oxide.
  • the workpieces are then immersed in a mixed acid of sulfuric and chromic acid. This is followed by immersion in an aluminum immersion liquid according to Example 2 over a period of 1 to 3 minutes.
  • the galvanic deposition of the pure silver layer is followed by the galvanic deposition of a ternary or binary sliding layer (PbSnCu or SnSb) in the desired thickness. After the ternary or binary sliding layer has been deposited, a heat test is carried out to check the bond strength.
  • a ternary or binary sliding layer PbSnCu or SnSb
  • Preformed plain bearing workpieces made of steel backing and an applied intermediate layer made of tin-lead-bronze are degreased in organic solvents and then subjected to electro-etching. Electroetching is followed by immersion in acid (pickling). After pickling, the electrodeposition of a pre-silvering layer of about 0.1-1.5 ⁇ m thickness is carried out and the electrodeposition of a pure silver layer of about 5 ⁇ m thickness in silvering baths according to Example 1. Electrodeposition of a ternary or binary is carried out on the deposited pure silver layer Sliding layer of the desired composition and thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Sliding-Contact Bearings (AREA)
PCT/DE1993/000229 1992-04-07 1993-03-10 Verfahren zum herstellen von gleitlager-schichtwerkstoff oder gleitlager-schichtwerkstücken WO1993020264A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93906428A EP0635073A1 (de) 1992-04-07 1993-03-10 Verfahren zum herstellen von gleitlager-schichtwerkstoff oder gleitlager-schichtwerkstücken

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4211642.2 1992-04-07
DE4211642A DE4211642C2 (de) 1992-04-07 1992-04-07 Verfahren zum Herstellen von Gleitlager-Schichtwerkstoff oder Gleitlager-Schichtwerkstücken

Publications (1)

Publication Number Publication Date
WO1993020264A1 true WO1993020264A1 (de) 1993-10-14

Family

ID=6456290

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1993/000229 WO1993020264A1 (de) 1992-04-07 1993-03-10 Verfahren zum herstellen von gleitlager-schichtwerkstoff oder gleitlager-schichtwerkstücken

Country Status (3)

Country Link
EP (1) EP0635073A1 (enrdf_load_stackoverflow)
DE (1) DE4211642C2 (enrdf_load_stackoverflow)
WO (1) WO1993020264A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099868A3 (en) * 1999-11-12 2004-05-12 Ebara Corporation Sliding member and process for producing the same
DE102007028215A1 (de) * 2007-06-20 2008-12-24 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines strukturiert beschichteten Gleitelements und danach erhältliches Gleitelement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008074345A1 (en) * 2006-12-19 2008-06-26 Mahle International Gmbh Sliding bearing
DE102007028211A1 (de) * 2007-06-20 2008-12-24 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines mit Silber strukturiert beschichteten Gleitelements und danach erhältliches Gleitelement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097422A (en) * 1963-07-16 Silver lead alloy for cavitation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048757B (enrdf_load_stackoverflow) * 1953-07-08 1959-01-15
US3342708A (en) * 1966-07-29 1967-09-19 Gen Dynamics Corp Process for lubricating a bearing surface
GB1200212A (en) * 1966-11-17 1970-07-29 Dow Corning Method of forming solid lubricant films on metal surfaces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097422A (en) * 1963-07-16 Silver lead alloy for cavitation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 58, no. 5, 1963, Columbus, Ohio, US; LAINER 'silver plating on aluminium' Spalte 4158D ; *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099868A3 (en) * 1999-11-12 2004-05-12 Ebara Corporation Sliding member and process for producing the same
DE102007028215A1 (de) * 2007-06-20 2008-12-24 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines strukturiert beschichteten Gleitelements und danach erhältliches Gleitelement

Also Published As

Publication number Publication date
DE4211642C1 (enrdf_load_stackoverflow) 1993-05-19
EP0635073A1 (de) 1995-01-25
DE4211642C2 (de) 1997-11-13

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