EP2394073A1 - Disque de frein pour un véhicule et son procédé de fabrication - Google Patents

Disque de frein pour un véhicule et son procédé de fabrication

Info

Publication number
EP2394073A1
EP2394073A1 EP10702057A EP10702057A EP2394073A1 EP 2394073 A1 EP2394073 A1 EP 2394073A1 EP 10702057 A EP10702057 A EP 10702057A EP 10702057 A EP10702057 A EP 10702057A EP 2394073 A1 EP2394073 A1 EP 2394073A1
Authority
EP
European Patent Office
Prior art keywords
coating
brake disc
vehicle
friction surfaces
base body
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Withdrawn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
EP10702057A
Other languages
German (de)
English (en)
Inventor
Oliver Lembach
Ralph Mayer
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.)
Mercedes Benz Group AG
Original Assignee
Daimler 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 Daimler AG filed Critical Daimler AG
Priority to EP14001060.4A priority Critical patent/EP2746613B1/fr
Publication of EP2394073A1 publication Critical patent/EP2394073A1/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Withdrawn legal-status Critical Current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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Compositions of linings; Methods of manufacturing
    • F16D69/027—Compositions based on metals or inorganic oxides
    • 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
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Compositions of linings; Methods of manufacturing
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0026—Non-ferro
    • F16D2200/003—Light metals, e.g. aluminium
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0039—Ceramics
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0038—Surface treatment
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0038—Surface treatment
    • F16D2250/0046—Coating

Definitions

  • the invention relates to a brake disk for a vehicle according to the features of the preamble of claim 1. Furthermore, the invention relates to a method for producing a brake disk according to the features of the preamble of claim 14.
  • the brake disk has at least one main body which carries at least partially in the region of its outer surface a wear-resistant layer which serves as a friction layer, wherein at least one intermediate layer is applied as an adhesion-promoting layer and / or as a corrosion protection layer between the base body and at least one outer wear-resistant layer, and this at least one intermediate layer is applied galvanically.
  • a brake disc for a vehicle and a method for their preparation comprises a base body of a metallic material, in particular gray cast iron, which has at least one friction surface with a coating of a hard material with a high coefficient of friction.
  • the main body is turned off by the layer thickness of the coating in the direction axially parallel to the axis of the brake disc.
  • the coating consists for example of aluminum oxide, diamond or a ceramic material.
  • the brake disk comprises a base body which carries a wear-resistant layer at least in the region of the outer surface, which serves as a friction layer and has a region of a material for adhesion between the base body and the at least one wear-resistant outer layer, wherein the region of the material for bonding and the wear-resistant outer layer is formed as at least one gradient layer whose composition changes in the layer thickness direction.
  • a wear protection layer is provided for the annular braking surface, which is formed by surface melting of the carrier material and mixing of coating material with the melt and integrated into the carrier material, wherein the energy input to the surface-side melting of the carrier material via light waves, electric arc, Plasma and / or electron beam takes place and in particular, preferably via a laser, acts as radiation energy in the form of light waves on the surface to be melted.
  • the invention has for its object to provide an improved brake disc for a vehicle and a method for their preparation.
  • the object is achieved by a brake disc for a vehicle with the features of claim 1. With regard to the method, the object is achieved by the features specified in claim 14.
  • the brake disk according to the invention for a vehicle comprises a base body of a metallic material, in particular gray cast iron, steel or aluminum alloy, which has friction surfaces with a coating of a hard, wear-resistant material.
  • the coating has hard materials in the form of carbides, or oxide ceramics.
  • the carbides or oxide ceramics hard materials significantly contribute to improved wear resistance and good and constant friction coefficients.
  • the carbides or the oxide ceramic lie by a binder phase and a matrix bound form, which are in particular formed by alloys based on Cr 1 Ni and / or Fe. These include, in particular, Cr and / or Cr / Ni steels.
  • a cost-effective brake disc can be produced, since a large part of the brake disc is made of inexpensive gray cast iron.
  • the brake disk has much less wear than a brake disk, in which the friction surfaces are also made of gray cast iron.
  • this coating a reduction in weight and a reduction in corrosion of the brake disc can be achieved.
  • the solution according to the invention allows a uniform coefficient of friction of the brake disc and a reduction in braking occurring temperatures, whereby a so-called Bremsenfading, d. H. Failure of the brake due to overheating is avoidable. By reducing vibration and noise during braking, a comfort increase is also achievable. Due to the solution according to the invention, elaborate after-treatments during surface hardening of the brake disk are eliminated.
  • FIG. 1 shows a longitudinal section through a brake disc according to the invention.
  • FIG. 1 shows a longitudinal section through a brake disk BS according to the invention.
  • the brake disk BS is formed from a base body G made of a metallic material, for example gray cast iron. As other materials also steel or a light metal alloy such as aluminum can be used.
  • the friction surfaces R of the brake disc BS have a coating B of a hard material which acts as a wear protection material.
  • This coating B comprises as hard materials carbides and / or oxide ceramics. Such coatings may also belong to the material classes of cermets or metal alloys.
  • carbides of tungsten and / or chromium are incorporated in a metallic matrix of nickel, cobalt and / or chromium.
  • the proportion of WC is preferably in the range of 60-85%. (In the data in%, unless stated otherwise, always means% by weight.)
  • the metallic matrix essentially has the task of binding the enclosed carbides.
  • the proportion of metallic matrix is preferably in the range from 10 to 50%, particularly preferably in the range from 15 to 25%.
  • alloy compositions having a high Co content are of importance for the metallic matrix, so that, in particular, proportions of 8-15% Co, 2 to 6% Cr and 0.001 to 3% Ni and optionally traces of other metals result for the coating.
  • Typical preferred coating compositions are:
  • Another embodiment of the coating B of carbides is WCCoCrNi, with a proportion of about 80 weight percent, cobalt, preferably in a proportion of about 10 weight percent, chromium, preferably in a proportion of about 4 weight percent and nickel, preferably in one portion formed by about 1 percent by weight.
  • the Cr may be at least partially bonded as carbide in these coating compositions.
  • Another suitable metal matrix is characterized by a high Ni content.
  • the essential constituents of these coatings are WC and Cr3C2 as hard materials, which together account for 70 to 95% of the coating.
  • Typical preferred coating compositions are:
  • a coating B of carbides is for example WCCr 3 CaNi 1 , preferably in a proportion of about 73 weight percent, chromium carbide, preferably in a proportion of about 20 weight percent and nickel, preferably formed with a share of about 7 weight percent.
  • Another coating with carbides is made of chromium steel.
  • chromium steel Here occur essentially Cr carbides as hard materials.
  • the preferred steels have a chromium content of 12 to 22 percent by weight. Preference is given to 15-20% Cr.
  • Another coating B is formed of oxide ceramics, for example titanium oxide (TiO 2 ) and aluminum oxide (AL 2 O 3 ).
  • the alumina content is preferably between 60% by weight and 97% by weight and titanium oxide (TiO 2 ), preferably in a proportion of between 3% and 40% by weight.
  • Particularly preferred are compositions with 50-60% Al 2 O 3 and 40-50% TiO 2 .
  • Another coating is a composite of oxide ceramics in a metal matrix, often referred to as cermet.
  • cermet As a metallic matrix, especially stainless steel is suitable. Particularly suitable stainless steels are Cr / Ni steels, in particular 316L or 1.4404.
  • the ceramic is preferably contained in a proportion of 50-80, preferably 65 to 75 weight percent, and the intermetal matrix preferably in a proportion of 20-50%, preferably 25-35 weight percent.
  • the ceramic is preferably made of alumina (AL 2 O 3 ) with titanium oxide (TiO 2 ).
  • the aluminum oxide content in the ceramic is preferably between 60% by weight and 97% by weight, and titanium oxide (TiO 2 ) is preferably in a proportion between 3% by weight and 40% by weight. Particularly preferred are compositions with 50-60% Al 2 O 3 and 40-50% TiO 2 .
  • an optimal coating B and an optimal hold of the coating B on the base G can be achieved.
  • High-speed flame spraying, plasma spraying, cold gas spraying or electric arc wire spraying are preferably applicable as coating methods.
  • the high-speed flame spraying is particularly suitable for producing the coating B from carbides.
  • the plasma spraying is suitable for producing the coating B made of ceramic, cermet or metal.
  • the cold gas spraying and the arc wire spraying are suitable.
  • High velocity flame spraying generates a chemical reaction using oxygen and a fuel in a spray gun.
  • spray particles of a coating material are applied at very high speed to the friction surfaces R to be coated.
  • the coating material can be fed to the spray gun as a wire or in powder form.
  • a plasma is generated by an arc and a plasma gas flowing through this arc.
  • a plasma gas flowing through this arc In a thereby forming plasma gas flow of the coating material is introduced in powder form, which is melted by the plasma and sprayed by the plasma gas flow to be coated on the friction surfaces R.
  • the coating material in powder form is sprayed onto the friction surfaces R to be coated at very high speed.
  • a relatively low heated process gas is accelerated by expansion in a Laval nozzle to supersonic speed, thereby forming a gas jet.
  • these Gas jet is injected the coating material.
  • the powdery coating material is thereby accelerated to such a high speed that, in contrast to other thermal spraying methods, it forms a dense and firmly adhering layer upon impact with the friction surfaces R to be coated, even without prior melting or melting.
  • the coating material is melted in wire form by means of an arc.
  • the spray particles forming thereby are sprayed onto the friction surfaces R to be coated by means of an atomizing gas.
  • the coating B can also be applied, for example, by means of a laser beam, electron beam or induction, wherein the coating material is applied, for example in powder form, to the friction surfaces R to be coated and melted by means of a laser beam, electron beam or induction.
  • the coating B can be optimized, so that an optimally adhering to the body G coating B can be achieved with optimal properties, ie a wear and corrosion resistant coating B with an optimized noise, vibration and temperature behavior.

Abstract

L'invention concerne un disque de frein (BS) pour un véhicule, comprenant un corps de base (G) qui est fait dans un matériau métallique, en particulier de la fonte grise, et qui possède des surfaces de friction (R) pourvues d'un revêtement (B) fait dans un matériau dur. Selon l'invention, le revêtement (B) est constitué de carbures, de céramique, de cermet ou de métaux.
EP10702057A 2009-02-09 2010-01-27 Disque de frein pour un véhicule et son procédé de fabrication Withdrawn EP2394073A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14001060.4A EP2746613B1 (fr) 2009-02-09 2010-01-27 Disque de frien pour véhicule

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009008105.4A DE102009008105B4 (de) 2009-02-09 2009-02-09 Bremsscheibe für ein Fahrzeug
PCT/EP2010/000482 WO2010089047A1 (fr) 2009-02-09 2010-01-27 Disque de frein pour un véhicule et son procédé de fabrication

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP14001060.4A Division EP2746613B1 (fr) 2009-02-09 2010-01-27 Disque de frien pour véhicule

Publications (1)

Publication Number Publication Date
EP2394073A1 true EP2394073A1 (fr) 2011-12-14

Family

ID=42123168

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10702057A Withdrawn EP2394073A1 (fr) 2009-02-09 2010-01-27 Disque de frein pour un véhicule et son procédé de fabrication
EP14001060.4A Active EP2746613B1 (fr) 2009-02-09 2010-01-27 Disque de frien pour véhicule

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14001060.4A Active EP2746613B1 (fr) 2009-02-09 2010-01-27 Disque de frien pour véhicule

Country Status (6)

Country Link
US (1) US8657082B2 (fr)
EP (2) EP2394073A1 (fr)
JP (2) JP2012517561A (fr)
CN (1) CN102308115A (fr)
DE (1) DE102009008105B4 (fr)
WO (1) WO2010089047A1 (fr)

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EP2746613A2 (fr) 2014-06-25
JP5822314B2 (ja) 2015-11-24
WO2010089047A1 (fr) 2010-08-12
JP2014040926A (ja) 2014-03-06
JP2012517561A (ja) 2012-08-02
EP2746613A3 (fr) 2014-08-13
DE102009008105B4 (de) 2017-02-09
EP2746613B1 (fr) 2017-06-21
US8657082B2 (en) 2014-02-25
CN102308115A (zh) 2012-01-04
US20110278116A1 (en) 2011-11-17
DE102009008105A1 (de) 2010-08-19

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