EP1812725A1 - Frein a disque ou tambour de frein peu sensible a l'usure et procede de realisation - Google Patents

Frein a disque ou tambour de frein peu sensible a l'usure et procede de realisation

Info

Publication number
EP1812725A1
EP1812725A1 EP05796047A EP05796047A EP1812725A1 EP 1812725 A1 EP1812725 A1 EP 1812725A1 EP 05796047 A EP05796047 A EP 05796047A EP 05796047 A EP05796047 A EP 05796047A EP 1812725 A1 EP1812725 A1 EP 1812725A1
Authority
EP
European Patent Office
Prior art keywords
brake
spray coating
content
brake disc
coating
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Withdrawn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
EP05796047A
Other languages
German (de)
English (en)
Inventor
Wolfgang Pahle
Suryakant Khambekar
Johann Baumgartner
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge 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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP1812725A1 publication Critical patent/EP1812725A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • 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
    • F16D65/10—Drums for externally- or internally-engaging 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
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/132—Structure layered
    • 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
    • F16D2200/0008—Ferro
    • F16D2200/0013—Cast iron
    • 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
    • F16D2200/0008—Ferro
    • F16D2200/0017—Ferro corrosion-resistant
    • 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 disc or a brake drum according to the Ober ⁇ concept of claim 1 and a method for their preparation.
  • Brake discs and brake drums convert the friction applied during braking into heat.
  • the friction work causes wear on the friction partners, which necessitates replacement of the friction partners when an admissible wear limit is reached.
  • Changes in the surface can be caused, on the one hand, by thermal stresses leading to distortions of the friction body or partial material changes due to hotspot formation, or by cold washouts, i.
  • the brake disc and pads contact each other for a short time, resulting in uneven wear. Even when the vehicle is parked, changes in the surfaces may result due to corrosion of the friction surface or rusting of the brake pads.
  • Spray coating optimized against brake discs with ceramic coatings in a simple manner The spray coating consists of a harder metal than the core, in particular a non-alloyed or alloyed steel.
  • the spray coating preferably consists of a steel alloy containing Cr.
  • the Cr content of the spray coating is between 10 and 20%.
  • a spray coating thickness of 0.7 mm With a spray coating thickness of 0.7 mm, a doubling of the service life of the brake disk can often be achieved when using a spray coating with the stated Cr content.
  • This brake disc is well suited for commercial vehicles and is especially in very good for passenger cars - especially in the upscale and athletic field - used.
  • the invention is based on the task of further optimizing the advantageous generic brake disks and brake drums - as described in principle in DE 100 56 161 and DE 101 20 326.
  • This object is achieved by the invention with regard to the brake disk and the Brems ⁇ drum by the subject matter of claim 1 and also provides an advantageous method for their preparation, which is specified in claim 8.
  • the spray coating of the one- or multi-piece Grund ⁇ body is realized by means of a spray wire with more than 20 wt% Cr content, since the use of such injection wires leads to improved corrosion resistance with otherwise good properties.
  • the measure of increasing the Cr content is preferably supplemented by a carbon content of the tip wires of at least 0.5%, since this leads to increased carbide formation-in other words high wear resistance-without losing its freedom from corrosion.
  • a barrier layer between the sprayed coating and the base material of the base body which consists of a softer metallic material than the sprayed coating and preferably a thickness from 0.05 to 0.1 mm.
  • the spear layer may be molybdenum or nickel-containing.
  • the barrier layer leads to a uniform and good heat distribution, protects the main body in the region of the barrier layer in addition to corrosion and reduced by its toughness and lower hardness residual stresses in the Spritzbeschich ⁇ device. It is particularly preferred to carry out a heat treatment after the injection process to reduce residual stresses and further precipitation of carbides according to another variant-again preferably optionally but also independently.
  • FIG. 1 shows a section through a first exemplary embodiment of a brake disk according to the invention
  • FIG. 2 shows a micrograph through an area of a spray coating
  • Fig. 1 shows a brake disc 1, which has two friction rings 2, 3, which are integrally connected by webs 4, wherein between the friction rings 2, 3 and the webs a L broadkanal 5 is formed.
  • To the one friction ring 2 is provided to pot-like approach 6 for attachment of the brake disc to a wheel hub, not shown here dar ⁇ .
  • FIG. 1 An analogous - according to differently constructed - body eg gray cast iron can be realized for a brake drum (not shown here).
  • the core 7 is provided on its two axial outer surfaces with a wear-resistant metallic, non-ceramic spray coating 8 as a friction surface.
  • the complete axial outer surfaces are coated with the spray coating.
  • the metallic spray coating 8 is harder than the core 7 made of gray cast iron, the life of the brake disc is increased. However, since the substantial volume fraction of the brake disc, namely the core 7, consists of gray cast iron, its advantageous further properties remain e.g. in terms of thermal conductivity and tendency for cracking or even be improved by the application of the spray coating.
  • the use according to the invention of sprayed wires having an elevated Cr content of, in particular, 25 to 30% Cr, in particular 28% Cr, can be used to achieve sufficient resistance to salt water in a simple manner.
  • the carbide formation can be significantly increased by a carbon content of at least 0.5%.
  • a carbon content of at least 0.5% With the increased carbide formation but also increase the overall hardness of the layer and the internal stresses. In the case of heavy braking, cracks in the spray coating may possibly occur, which in the extreme case lead to a detachment of the coating. Again, this effect can be easily countered by a heat treatment performed after the injection molding. Thus, a heat treatment at 650 0 C has led to improved results.
  • a barrier layer 9 between wear protection layer 8 and base material is advantageous (see the left side of the brake disk of FIG. 1 and the lines which bound the barrier layer in the sectional view of FIG. 2).
  • the barrier layer 9 has the task to distribute the heat evenly, protect the Grund ⁇ material from corrosion and reduce residual stress in the spray coating by its toughness and lower hardness.
  • barrier layer 9 molybdenum and / or highly nickel-containing materials.
  • This barrier layer 9 is preferably also applied in an injection process. In experiments, the beneficial effect for a nickel-containing layer was confirmed.
  • the soft barrier layer 9 further prevents, when first cracks have formed in the sprayed coating 8, that these progress to the base material. It therefore acts advantageously as a crack stopper.
  • the barrier layer 9 has a thickness of 0.05 to 0.1 mm.

Abstract

La présente invention concerne un frein à disque ou un tambour de frein présentant des surfaces de frottement, de préférence destiné à des véhicules routiers, et un procédé pour le réaliser. Le frein à disque ou le tambour de frein présente un corps de base (7) fait d'un matériau de fonte qui est recouvert en intégralité ou partiellement d'un revêtement métallique injecté (8) au moins sur l'une de ses surfaces de frottement, pour coopérer avec une garniture de frein, le revêtement injecté (8) se présentant sous la forme d'un revêtement injecté à la flamme, à l'arc lumineux ou au plasma ou d'un revêtement appliqué par explosion, et est constitué d'un métal qui est plus dur que celui du corps de base, et qui résiste mieux à l'oxydation et à l'usure que celui du corps de base. Le revêtement injecté (8) est réalisé au moyen d'un fil d'injection contenant plus de 20 % en poids de Cr.
EP05796047A 2004-10-29 2005-09-28 Frein a disque ou tambour de frein peu sensible a l'usure et procede de realisation Withdrawn EP1812725A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004052673.7A DE102004052673B4 (de) 2004-10-29 2004-10-29 Verschleißarme Bremsscheibe oder Bremstrommel und Verfahren zu deren Herstellung
PCT/EP2005/010445 WO2006048084A1 (fr) 2004-10-29 2005-09-28 Frein a disque ou tambour de frein peu sensible a l'usure et procede de realisation

Publications (1)

Publication Number Publication Date
EP1812725A1 true EP1812725A1 (fr) 2007-08-01

Family

ID=35500663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05796047A Withdrawn EP1812725A1 (fr) 2004-10-29 2005-09-28 Frein a disque ou tambour de frein peu sensible a l'usure et procede de realisation

Country Status (4)

Country Link
US (1) US20070286961A1 (fr)
EP (1) EP1812725A1 (fr)
DE (1) DE102004052673B4 (fr)
WO (1) WO2006048084A1 (fr)

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WO2008103759A1 (fr) * 2007-02-20 2008-08-28 Tech M3, Inc. Disques de frein en matériau composite et procédé de revêtement
DE102007020891A1 (de) * 2007-05-04 2008-11-13 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Bremsscheibe und Verfahren zur Herstellung einer Bremsscheibe
US20090026025A1 (en) * 2007-07-26 2009-01-29 Keith Hampton Dual coated cast iron brake rotor and method of construction
DE102008012683A1 (de) * 2008-03-05 2009-09-10 Audi Ag Verfahren zur Herstellung von Reibflächen oder Reibschichten einer Carbon-Keramik-Bremsscheibe sowie eine mit derartigen Reibflächen oder Reibschichten ausgestatteten Carbon-Keramik-Bremsscheibe
DE102009003161A1 (de) 2009-05-15 2010-11-18 Ford Global Technologies, LLC, Dearborn Beschichtete Leichtmetallscheibe und Verfahren zu deren Herstellung
WO2010130529A1 (fr) 2009-05-13 2010-11-18 Ford Global Technologies, Llc Disque en alliage léger revêtu
US9566957B2 (en) 2011-03-31 2017-02-14 Gunite Corporation Disk brake hub assembly
US9897154B2 (en) 2011-03-31 2018-02-20 Gunite Corporation Disk brake hub assembly
US8950556B2 (en) 2011-03-31 2015-02-10 Gunite Corporation Disk brake hub assembly
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DE102011089923A1 (de) * 2011-12-27 2013-06-27 Robert Bosch Gmbh Verfahren zur Beschichtung einer Bremsscheibe und mit dem Verfahren hergestellte Bremsscheibe
CN103573874B (zh) * 2012-07-31 2015-09-02 嘉兴四通车轮股份有限公司 一种制动鼓的制造方法以及一种制动鼓
WO2014145231A2 (fr) 2013-03-15 2014-09-18 Tech M3, Inc. Systèmes de freinage incorporant des rotors résistant à l'usure et à la corrosion
WO2014145227A1 (fr) 2013-03-15 2014-09-18 Tech M3, Inc. Systèmes de freinage résistants à l'usure
EP3026288B1 (fr) * 2014-07-24 2017-11-29 Ford Global Technologies, LLC Procédé de fabrication d'un disque de frein et disque de frein
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DE102018222687A1 (de) 2018-12-20 2020-06-25 Robert Bosch Gmbh Bremsscheibe und Verfahren zur Herstellung einer Bremsscheibe
DE102019207291A1 (de) 2019-05-18 2020-11-19 Robert Bosch Gmbh Reibbremskörper für eine Reibbremse, Reibbremse und Verfahren zur Herstellung
DE102019207292A1 (de) * 2019-05-18 2020-11-19 Robert Bosch Gmbh Reibbremskörper für eine Reibbremse eines Kraftfahrzeugs, Reibbremse und Verfahren zum Herstellen eines Reibbremskörpers
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Also Published As

Publication number Publication date
US20070286961A1 (en) 2007-12-13
WO2006048084A1 (fr) 2006-05-11
WO2006048084A8 (fr) 2006-08-10
DE102004052673B4 (de) 2016-07-07
DE102004052673A1 (de) 2006-05-11

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