DE202011109648U1 - brake disc - Google Patents
brake disc Download PDFInfo
- Publication number
- DE202011109648U1 DE202011109648U1 DE201120109648 DE202011109648U DE202011109648U1 DE 202011109648 U1 DE202011109648 U1 DE 202011109648U1 DE 201120109648 DE201120109648 DE 201120109648 DE 202011109648 U DE202011109648 U DE 202011109648U DE 202011109648 U1 DE202011109648 U1 DE 202011109648U1
- Authority
- DE
- Germany
- Prior art keywords
- brake disc
- surface coating
- brake
- thermal
- heat treatment
- 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.)
- Expired - Lifetime
Links
Images
Classifications
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- 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
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- 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
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- 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
- C23C4/18—After-treatment
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
Bremsscheibe für eine Scheibenbremse eines Kraftfahrzeugs, wobei die Bremsscheibe (1) eine Oberflächenbeschichtung (5) zumindest auf einer ihrer Reibflächen (4) aufweist, dadurch gekennzeichnet, dass bei der oberflächenbeschichteten Bremsscheibe (1) die thermische Spannungen zwischen der Bremsscheibe (1) und ihrer Oberflächenbeschichtung (5) durch eine nach dem Auftragen der thermischen Oberflächenbeschichtung (5) durchgeführte Wärmebehandlung verringert sind.Brake disc for a disc brake of a motor vehicle, the brake disc (1) having a surface coating (5) at least on one of its friction surfaces (4), characterized in that, in the case of the surface-coated brake disc (1), the thermal stresses between the brake disc (1) and its Surface coating (5) are reduced by a heat treatment carried out after the application of the thermal surface coating (5).
Description
Die Erfindung betrifft eine Bremsscheibe für eine Scheibenbremse eines Kraftfahrzeugs mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a brake disk for a disk brake of a motor vehicle having the features of the preamble of claim 1.
Stand der TechnikState of the art
Bremsscheiben von Kraftfahrzeugen bestehen meist aus Grauguss, d. h. aus Gusseisen mit Lamellengraphit. Bekannt ist auch, Bremsscheiben mit einer verschleißmindernden-, reibwertverbessernden- und/oder Verschleißfestigkeit erhöhenden Oberflächenbeschichtung zu versehen. Die Oberflächenbeschichtung ist meist auf die Reibflächen der Bremsscheibe beschränkt, also auf die beiden lochscheibenförmigen Bereiche der Bremsscheibe, gegen die zum Bremsen Reibbremsbeläge gedrückt werden. An die Reibflächen angrenzende Oberflächenschichten werden meist ein Stück weit mitbeschichtet, weil sie sonst beim Beschichten abgedeckt werden müssten. Möglich ist auch eine vollflächige Oberflächenbeschichtung.Brake discs of motor vehicles are usually made of gray cast iron, d. H. cast iron with lamellar graphite. It is also known to provide brake discs with a wear-reducing, reibwertverbessernden- and / or wear resistance increasing surface coating. The surface coating is usually limited to the friction surfaces of the brake disc, so on the two disc-shaped areas of the brake disc, against the brake friction brake linings are pressed. Surface layers adjacent to the friction surfaces are usually partially coated, because otherwise they would have to be covered during coating. Also possible is a full-surface coating.
Die Oberflächenbeschichtung wird thermisch aufgetragen, was thermische Spannungen zwischen der Bremsscheibe und der Oberflächenbeschichtung nach einem Abkühlen wegen unterschiedlicher thermischer Ausdehnungskoeffizienten der Bremsscheibe und der Oberflächenbeschichtung zur Folge hat. Die thermischen Spannungen verschlechtern eine Haftung der Oberflächenbeschichtung auf der Bremsscheibe, die Oberflächenbeschichtung kann reißen, sich örtlich bis großflächig von der Bremsscheibe lösen und von Korrosion unterwandert werden, was ebenfalls zu einem Ablösen der Oberflächenbeschichtung von der Bremsscheibe führt.The surface coating is thermally applied, resulting in thermal stresses between the brake disk and the surface coating after cooling due to different thermal expansion coefficients of the brake disk and the surface coating. The thermal stresses worsen adhesion of the surface coating to the brake disk, the surface coating can crack, detach from the brake disk to a large extent and be undermined by corrosion, which likewise leads to detachment of the surface coating from the brake disk.
Offenbarung der ErfindungDisclosure of the invention
Die Bremsscheibe nach den Merkmalen des Anspruchs 1 weist eine Oberflächenbeschichtung zumindest einer ihrer Reibflächen auf. Erfindungsgemäß ist die oberflächenbeschichtete Bremsscheibe wärmebehandelt, so dass thermische Spannungen zwischen der Bremsscheibe und ihrer Oberflächenbeschichtung verringert sind. Durch das Erwärmen werden Streckgrenze und maximale Zugfestigkeit herabgesetzt, so dass die thermischen Spannungen zwischen der Oberflächenbeschichtung und der Bremsscheibe zu einem plastischen Fliesen der Oberflächenbeschichtung führen, wodurch die thermischen Spannungen verringert werden. Vorteile der Erfindung sind eine bessere Haftung der Oberflächenbeschichtung auf der Bremsscheibe und eine Verringerung von Korrosion, insbesondere einer Korrosionsunterwanderung der Oberflächenbeschichtung wird entgegengewirkt. Die erfindungsgemäß vorgesehene Wärmebehandlung der Bremsscheibe ist kein Spannungsarmglühen, sie bewirkt keine Gefügeumwandlung der Bremsscheibe. Die erfindungsgemäße Wärmebehandlung der Bremsscheibe erfolgt bei einer Temperatur, die zu niedrig für eine Gefügeumwandlung ist, außerdem dauert die Wärmebehandlung kürzer als ein Spannungsarmglühen.The brake disc according to the features of claim 1 has a surface coating on at least one of its friction surfaces. According to the invention, the surface-coated brake disk is heat-treated, so that thermal stresses between the brake disk and its surface coating are reduced. The heating reduces the yield strength and the maximum tensile strength, so that the thermal stresses between the surface coating and the brake disk lead to a plastic surface coating, which reduces the thermal stresses. Advantages of the invention are a better adhesion of the surface coating on the brake disc and a reduction of corrosion, in particular a corrosion undercutting of the surface coating is counteracted. The inventively provided heat treatment of the brake disc is no stress relief, it does not cause structural transformation of the brake disc. The heat treatment of the brake disk according to the invention takes place at a temperature which is too low for structural transformation, moreover, the heat treatment lasts shorter than stress relief annealing.
Die Unteransprüche haben vorteilhafte Ausgestaltungen und Weiterbildungen der in Anspruch 1 angegebenen Erfindung zum Gegenstand.The dependent claims have advantageous embodiments and further developments of the invention specified in claim 1 to the subject.
Kurze Beschreibung der ZeichnungShort description of the drawing
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die einzige Figur zeigt eine Bremsscheibe in perspektivischer Darstellung.The invention will be explained in more detail with reference to an embodiment shown in the drawing. The single FIGURE shows a brake disc in perspective view.
Ausführungsform der ErfindungEmbodiment of the invention
Die in der Zeichnung dargestellte Bremsscheibe
Nach dem thermischen Auftrag kühlt die Oberflächenbeschichtung
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201120109648 DE202011109648U1 (en) | 2011-12-30 | 2011-12-30 | brake disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201120109648 DE202011109648U1 (en) | 2011-12-30 | 2011-12-30 | brake disc |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202011109648U1 true DE202011109648U1 (en) | 2012-02-29 |
Family
ID=45896284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201120109648 Expired - Lifetime DE202011109648U1 (en) | 2011-12-30 | 2011-12-30 | brake disc |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202011109648U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023020660A3 (en) * | 2021-08-16 | 2023-04-13 | HPL Technologies GmbH | Finishing method for a workpiece with a finishing layer, and workpiece with a finishing layer |
-
2011
- 2011-12-30 DE DE201120109648 patent/DE202011109648U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023020660A3 (en) * | 2021-08-16 | 2023-04-13 | HPL Technologies GmbH | Finishing method for a workpiece with a finishing layer, and workpiece with a finishing layer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20120419 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years | ||
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20150305 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years | ||
R152 | Utility model maintained after payment of third maintenance fee after eight years | ||
R071 | Expiry of right |