EP1629138A1 - Procede de fabrication de coussinets lisses - Google Patents

Procede de fabrication de coussinets lisses

Info

Publication number
EP1629138A1
EP1629138A1 EP04729073A EP04729073A EP1629138A1 EP 1629138 A1 EP1629138 A1 EP 1629138A1 EP 04729073 A EP04729073 A EP 04729073A EP 04729073 A EP04729073 A EP 04729073A EP 1629138 A1 EP1629138 A1 EP 1629138A1
Authority
EP
European Patent Office
Prior art keywords
plain bearing
metal
zinc
layer
corrosion
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Withdrawn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
EP04729073A
Other languages
German (de)
English (en)
Inventor
Gerhard Holzer
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.)
Saint Gobain Performance Plastics Pampus GmbH
Original Assignee
Saint Gobain Performance Plastics Pampus 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 Saint Gobain Performance Plastics Pampus GmbH filed Critical Saint Gobain Performance Plastics Pampus GmbH
Publication of EP1629138A1 publication Critical patent/EP1629138A1/fr
Withdrawn legal-status Critical Current

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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles
    • C23C24/045—Impact or kinetic deposition of particles by trembling using impacting inert media
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
    • 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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • 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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
    • 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
    • F16C2204/50—Alloys based on zinc
    • 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
    • F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
    • F16C2300/42—Application independent of particular apparatuses related to environment, i.e. operating conditions corrosive, i.e. with aggressive media or harsh conditions

Definitions

  • the invention relates to a method for producing plain bearing bushes, which have a metal jacket provided on the outside with a corrosion protection layer as a carrier and a sliding layer made of plastic.
  • the invention further relates to plain bearing bushes produced by the method.
  • Plain bearing bushes of the type mentioned at the outset are generally known and are used in a variety of ways in hinges and bearings of the most varied types, in particular in the automotive sector.
  • the operation of the plain bearing bushes is maintenance-free, i. H. lubrication of the bearings is not necessary.
  • the plain bearing bushes are usually installed in the corresponding hinges and bearings by pressing them in using suitable tools.
  • the plain bearing bushes are therefore also referred to as press-fit, maintenance-free plain bearing bushes.
  • Such bushings usually have a metal jacket which is provided on the inside with a plastic sliding layer ("running layer") based on fluoropolymer compounds (eg PTFE with glass fiber graphite filler).
  • a plastic sliding layer based on fluoropolymer compounds (eg PTFE with glass fiber graphite filler).
  • the Plastic sliding layer additionally a tin / bronze wire mesh or an expanded metal • as reinforcement material, which is embedded in the fluoropolymer compound.
  • a plastic sliding layer ⁇ a textured metal sheet having honeycomb-shaped recesses, wherein the fluoropolymer compound' adhesively adhered to the surface of the .Metallblechs and fills the wabenför strength recesses.
  • Metal sheath and plastic sliding layer are usually connected to one another in the 'described' plain bearing bushes by a hot-melt adhesive film (e.g. PFA, ETFE).
  • the metal shell of the plain bearing bush on the outside and on the end faces with a ' corrosion protection layer made of zinc or zinc / nickel, tin, zinc aluminum and optionally chrome.
  • a ' corrosion protection layer made of zinc or zinc / nickel, tin, zinc aluminum and optionally chrome.
  • the zinc or zinc / nickel layer is applied by galvanizing, ie the finished plain bearing bushes are placed in a galvanic zinc or zinc / nickel bath in which the corrosion-protective zinc or zinc / nickel layer is electrolytically applied is deposited.
  • This object is inventively achieved by a method of manufacturing a plain bearing bush comprising an externally provided with a corrosion protection layer metal jacket as a carrier and a sliding layer of plastic, in which to form the Kprrosionsschutz für a 'corrosion inhibitors in powder form. echanically applied.
  • the mechanical application of the corrosion protection agent according to the invention leads to a longer service life and improved sliding properties of the plain bearing bushes compared to the usual galvanic processes.
  • the mechanical application of the corrosion protection agent does not lead to the formation of zinc deposits in the flange area of the Running shift is coming.
  • the fact that the occurrence of zinc deposits in the flange area can be avoided with the method according to the invention was particularly surprising because, in the method according to the invention, the flange areas of the bushings come into direct contact with zinc powder (or other metal powder). However, surprisingly, this contact does not lead to a permanent deposit of zinc in the areas mentioned.
  • the undesirable increase in the coefficient of friction and reduction in the load-bearing capacity and the wear resistance observed in the conventional galvanized slide bearing bushes when running in due to the zinc deposits do not occur in the method according to the invention.
  • the plain bearing bushes produced by the method according to the invention have an increased service life compared to the usual galvanized plain bearing bushes.
  • the plain bearing bushes produced by the method according to the invention have improved adhesion between the metal jacket and the plastic sliding layer compared to the galvanized bushings. There is no detachment of the plastic sliding layer, especially in the vulnerable flange area.
  • the method according to the invention is gentler than the conventional galvanic method and leads to less damage to the sockets and thus to a lower exclusion rate during production.
  • the features of the subclaims indicate advantageous developments of the method according to the invention.
  • the method according to the invention is suitable for the production of all types of plain bearing bushes and is not limited to specific plain bearing bushes. It is only essential that the plain bearing bush has a composite of metal jacket and plastic sliding layer. Usually, the plain bearing bush has a hollow cylindrical body which is open on its end faces and has the metal jacket on its outside and the plastic sliding layer on its inside. The plain bearing bush can have a flange on at least one of its end faces, which enables the bush to be simply pressed into a hinge or bearing.
  • the method according to the invention is particularly suitable for producing maintenance-free plain bearings.
  • the metal shell of the plain bearing bushes can consist of any metals and metal alloys. Particularly suitable metals are steel, stainless steel, aluminum, bronze, brass, titanium and / or copper and alloys made from these metals.
  • the plastic sliding layer of the plain bearing bushes contains a plain bearing material made of plastic.
  • plastics which are suitable for such purposes generally have high mechanical strength and / or high temperature resistance.
  • Suitable plastics are, for example, plastics based on fluorine-containing polymers, in particular polytetrafluoroethylene (PTFE), polyfluoroalkoxyalkenes (PFA, MFA) and / or tetrafluoroethylene-hexafluoropropylene (FEP), and also non-fluorine-containing polymers, such as in particular polyether ether ketone (PEEK) or Polyethylene (PE), in particular high molecular weight polyethylene (HMW-PE) and / or ultra high molecular weight polyethylene (UHMW-PE).
  • PTFE polytetrafluoroethylene
  • PFA, MFA polyfluoroalkoxyalkenes
  • FEP tetrafluoroethylene-hexafluoropropylene
  • PEEK polyether
  • the plastic sliding layer can contain organic and / or inorganic fillers to improve the load-bearing capacity and to reduce wear, cold flow and static friction ("compounds").
  • Preferred plastic compounds contain glass fibers, carbon, graphite and / or an aromatic polyester. Fluoropolymer / glass fiber / graphite compounds, fluoropolymer / carbon / graphite compounds and fluoropolymer / aromatic polyester compounds are particularly suitable.
  • the plastic sliding layer of the plain bearing bushes can also contain a metallic component for reinforcement, the metallic component being a reinforcing material with an open structure, a fabric, in particular a wire mesh, an expanded metal, a nonwoven, in particular a metal nonwoven, a metal foam, a porous metal layer and / or can be a pinhole.
  • a porous metal layer in particular a porous bronze layer
  • the metallic component can consist of any metals or metal alloys. It preferably consists of a material selected from bronze, copper, chromium, nickel, zinc, zinc-iron alloy, zinc-nickel alloy, aluminum, tin bronze, steel, stainless steel and alloys thereof.
  • the plastic sliding layer of the plain bearing bush is intimately connected to the metal jacket and forms a composite material.
  • the plastic sliding layer with the metal jacket is preferably covered by a hot-melt adhesive film, in particular made of ethylene Tetrafluoroethylene copolymer (ETFE), and / or perfluoroalkoxy copolymer (PFA).
  • ETFE ethylene Tetrafluoroethylene copolymer
  • PFA perfluoroalkoxy copolymer
  • the method according to the invention is characterized in that, in order to form the corrosion protection layer, a corrosion protection agent in powder form is mechanically applied to the metal jacket of the plain bearing bush.
  • the process of mechanical application is also called plating.
  • the anti-corrosion agent is preferably a ductile material, in particular a ductile metal, which can be pressed into the surface of the metal shell during plating.
  • Metal powders in particular zinc, tin, aluminum, cadium and / or alloys thereof, are particularly suitable as corrosion protection agents. But they are also non-metallic anti-corrosion agents such as certain ductile polymers conceivable.
  • zinc in particular in the form of zinc dust, is used as an anti-corrosion agent.
  • the anti-corrosion agent. is in powder form. Powders in the sense of the invention are understood to mean particles with an average particle diameter of 20 mm to 1 ⁇ . The smaller the average particle diameter of the powder used, the easier it is to apply. This is advantageously 1 ⁇ m to 1 mm, more preferably 1 to 10 ⁇ m and in particular 3 to 8 ⁇ m. '' ' ' ⁇ ;
  • the mechanical application of the anti-corrosion agent - is preferably done by pressing into the surface of the metal jacket. This can be done, for example, by circulating the . Plain bearing bush in a mixture containing powdered anti-corrosion agent and hard material body. When the mixture is circulated, the hard material bodies press the anticorrosive particles into the surface of the metal shell of the plain bearing bushes.
  • the hard material bodies preferably have an average particle diameter of 0.1 to 10 mm, in particular of 0.4 to 1.2 mm.
  • the size of the hard material used has an impact on the speed and core of the coating obtained. Large bodies with a particle diameter of 3 to 10 mm. have a high impact effect, which leads to a faster plating process.
  • Mixtures of these can also be used to combine the advantages of large and small hard material bodies. It has been shown that with a mixing ratio of 10:90 to 50:50 vol.%, In particular 20:80 to 30:70 vol.%, Of bodies with a particle diameter of 3 to 10 mm to bodies with an average particle diameter from 0.1 to 0.5 m can achieve a coating that is suitable for use. of plain bearing bushes has particularly advantageous surface and corrosion protection properties. Glass balls of different sizes are preferably used in the specified mixing ratio.
  • any material whose hardness is greater than the hardness of the anticorrosive particles is suitable as the material for the hard material bodies.
  • glass balls are used as hard material bodies, since glass balls are simple and inexpensive, available in many sizes, non-toxic, chemically inert, non-absorbent, wear-resistant and recyclable, and have a low coefficient of friction and high shock resistance.
  • the hard material body and plain bearing bushes are present in a mixture in approximately equal parts by volume.
  • it can also a higher or lower proportion of hard material bodies can be selected.
  • a higher proportion of hard material bodies is particularly useful when coating heavy plain bearing bushes, or even when a high layer thickness is desired.
  • the volume ratio of hard material body to plain bearing bushes in the method according to the invention is usually about 0.3 to about 3.
  • the inventive method is preferably 'performed ends rotate drum, in which the mixture is recirculated.
  • the mixture In order to improve the circulation of the mixture in the drum, has' in a in a .with the mixture filled the' drum preferably on the inside corners.
  • a further improvement of the circulation process can be achieved by the drum having a bottom and the cross section of the drum decreasing towards the bottom.
  • the drum should also be resistant to the substances used.
  • a stainless steel drum is therefore preferably used, which additionally can still be coated with acid or abrasion-resistant plastic or rubber.
  • the mixture also contains
  • Corrosion protection and plain bearing bushes still a liquid, especially water.
  • a metal powder e.g. Zinc dust
  • Zinc dust as an anticorrosive agent, has proven to be advantageous to add water to the mixture and to adjust the aqueous phase of the mixture to a pH of 0 to 7, in particular 1 to 3.
  • the pH can be adjusted by adding an acid.
  • an acidic medium the Etched surface of the metal shell of the plain bearing bushes and thus activated.
  • the pH should therefore be 0 to 7, preferably 1 to 3 and more preferably 1.7 to 2.5.
  • the pH is adjusted by adding an acid.
  • the acid is preferably a non-oxidizing acid.
  • the volume ratio of hard material bodies and plain bearing bushes to liquid is preferably about 2: 1. It is advantageous to set the liquid level so that it is just above the solid components of the mixture while the drum is rotating.
  • additives such as activators, promoters, defoamers and metal salts can also be added to the mixture.
  • activators such as activators, promoters, defoamers and metal salts
  • metal salts such as metal salts
  • the degreasing can be carried out in any way, in particular hot, alkaline soap solution is suitable as a non-greasy product.
  • the degreased bushings can then in one . Acid bath dipped and then rinsed with water.
  • the coating process is followed by others.
  • Surface treatment steps For example, after mechanical plating, the plain bearing bushes can still be chromated and / or sealed in the usual way. Chromating is possible, in particular yellow chromating (Cr-VI) or blue chromating (Cr-III).
  • a seal with a silicate sealer is particularly suitable as a seal.
  • the plain bearing bushes to be coated are filled into a drum in a mixture with hard material bodies (e.g. glass balls) and water - if necessary after pre-cleaning.
  • hard material bodies e.g. glass balls
  • An activator such as glycol ether, in particular nonylphenol glycol ether, can also be added to the mixture.
  • the activators are preferably added to the mixture in acidic solution, in particular in dilute sulfuric acid.
  • All components are mixed by briefly rotating the drum (approx. 2 min).
  • a metal salt in particular a .
  • Copper salt such as copper sulfate can be added.
  • the mixture can also .werden promoters such as ⁇ Zinnsalze-, especially tin sulfate, as a reaction accelerator added.
  • the promoters are preferably added to the mixture in acidic solution, in particular in a mixture of dilute sulfuric and hydrochloric acid.
  • the promoter solution can also contain surfactants and / or organic salts as additives. Conventional defoaming agents such as can also be added to the reaction mixture.
  • one small amount of corrosion inhibitors can be added as a Flash now being rotated until the plain bearing bushes have a silvery sheen.
  • the corrosion protection agent is preferably added in portions in several steps, in particular in 2 to 5 steps, more preferably in 3 steps. The addition is preferably carried out at intervals of 5 to 60 minutes, in particular 10 to 20 minutes.
  • the pH is adjusted to between 1.6 and 2.0 using the activator and / or by adding acid. This value is preferably kept constant until the 'end of the coating process.
  • the separation can take place, for example, by separation via sieves or also by means of magnets.
  • the application also relates to a plain bearing bush produced by the method according to the invention.
  • Plastic sliding layer fluoropolymer compound film (PTFE and organic fillers)
  • the bushings were first cleaned and degreased with a mildly alkaline cleaner and then filled into a conical octagonal coating drum. After filling with an approximately equal amount, based on volume, glass balls
  • the coating drum was set in rotation at 30 rpm. Then 1 1 of a 1% solution of nonylphenol polyglycol ether in dilute sulfuric acid was used to initiate the coating process
  • the sockets so produced had a uniform zinc layer having a thickness in the range of '12 to 18 .mu.m.
  • the bushings showed neither zinc deposits on the sliding layer, nor film detachments or infiltration of the polymer layer.
  • all test sockets were resistant to red rust for more than 130 h.
  • the bushings were distinguished by improved running-in properties compared to the bushings produced according to Comparative Example 1.
  • Plastic sliding layer Fluoropolymer composite film (PTFE 4-carbon / graphite)
  • Salt spray test determined a resistance to incipient red rust of 132 h.
  • 3rd Plastic sliding layer bronze woven reinforced sliding layer (E-PTFE + glass fiber / graphite)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sliding-Contact Bearings (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Laminated Bodies (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

L'invention concerne un procédé de fabrication de coussinets lisses composés d'une chemise métallique pourvue d'une couche anticorrosion à l'extérieur, servant de support, et d'une couche de glissement en plastique. Un agent anticorrosion pulvérulent est appliqué mécaniquement pour la création de la couche anticorrosion. Les coussinets lisses fabriqués au moyen du procédé selon l'invention présentent de meilleures propriétés de glissement et une plus grande durée de vie.
EP04729073A 2003-05-23 2004-04-23 Procede de fabrication de coussinets lisses Withdrawn EP1629138A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323832 2003-05-23
PCT/EP2004/004324 WO2004104268A1 (fr) 2003-05-23 2004-04-23 Procede de fabrication de coussinets lisses

Publications (1)

Publication Number Publication Date
EP1629138A1 true EP1629138A1 (fr) 2006-03-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04729073A Withdrawn EP1629138A1 (fr) 2003-05-23 2004-04-23 Procede de fabrication de coussinets lisses

Country Status (5)

Country Link
EP (1) EP1629138A1 (fr)
JP (1) JP2007502370A (fr)
CA (1) CA2526653A1 (fr)
DE (1) DE102004020385B4 (fr)
WO (1) WO2004104268A1 (fr)

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GB0308957D0 (en) 2003-04-17 2003-05-28 Lillishall Plastics And Engine Tolerance ring assembly
DE202005006868U1 (de) 2005-04-29 2006-08-31 Hühoco Metalloberflächenveredelung Gmbh Antifriktions-Verbundsystem und Lagerteil mit diesem System
WO2007108512A1 (fr) * 2006-03-22 2007-09-27 T.N.G. Technologies Co., Ltd. Procede de fabrication d'un materiau de revetement a base de metal et materiau de revetement a base de metal
AT504651B1 (de) * 2007-05-30 2008-07-15 Miba Gleitlager Gmbh Gleitelement
AU2013203296B2 (en) * 2009-08-28 2017-03-02 Saint-Gobain Performance Plastics Pampus Gmbh Corrosion resistant bushing
US8944690B2 (en) * 2009-08-28 2015-02-03 Saint-Gobain Performance Plastics Pampus Gmbh Corrosion resistant bushing
US20110076096A1 (en) 2009-09-25 2011-03-31 Saint-Gobain Performance Plastics Rencol Limited System, method and apparatus for tolerance ring control of slip interface sliding forces
US20120240350A1 (en) * 2011-03-22 2012-09-27 Saint-Gobain Performance Plastics Pampus Gmbh Bushing with transfigurable electrical conduction state
KR101984512B1 (ko) 2014-09-02 2019-05-31 생―고뱅 퍼포먼스 플라스틱스 팜푸스 게엠베하 내부식성 부싱
DE102016225883A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Zahnradpumpe für ein Abwärmerückgewinnungssystem
TWI707525B (zh) 2017-12-15 2020-10-11 英商聖高拜高性能塑料瑞柯有限公司 交流發電機總成

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See references of WO2004104268A1 *

Also Published As

Publication number Publication date
CA2526653A1 (fr) 2004-12-02
DE102004020385A1 (de) 2004-12-30
JP2007502370A (ja) 2007-02-08
DE102004020385B4 (de) 2008-07-10
WO2004104268A1 (fr) 2004-12-02

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