DE102013218344A1 - Bearing component of a rolling or sliding bearing and method for their preparation - Google Patents

Abstract

Bearing component of a rolling or sliding bearing with a tread forming a tread layer, wherein the tread layer consists of at least one matrix material and at least one in the at least one matrix material at least partially dispersed dispersion material.

Description

The invention relates to a bearing component of a rolling or sliding bearing with a running surface forming tread layer and a method for their preparation.

Certain bearing applications require different properties for the respective body and the bearing surface of the bearing, for example, the body particularly light, soft or inexpensive, the tread, however, must be particularly hard, abrasion resistant and high quality. It is possible to coat a base body of low strength or low hardness with a hard and / or abrasion-resistant material. A bearing component with a coated base body can unite the advantageous properties of different materials specifically with each other, the material of the body, which is referred to in the following starting material, according to requirements may have significantly different properties and should be called the material of the coating, which is in the following order material.

Due to the different material properties, the permanent application of the coating to the base body can prove difficult. This is especially true for high-precision bearings, where the coating not only with a very low tolerance (eg., Maximum 10 microns) applied to the body, but must remain even after longer periods of operation, without it may come to peel effects, property changes or even material failure , The achievable in the way of the coating of bearing components surface hardness and abrasion resistance are therefore technologically set limits.

In addition to the coating of a soft and / or inexpensive base body with a hard, abrasion-resistant and / or high-quality coating, another approach is to make the entire body of very high quality material, such as tempered bearing steel, just so that the tread the desired properties such as hardness and Has abrasion resistance. However, this is associated with high material costs.

Against this background, the invention is based on the object to provide a bearing component of a rolling or sliding bearing having a tread forming a tread layer with further improved hardness and wear properties and which is inexpensive to produce. Likewise, the object is to provide a method for producing such a bearing component and a rolling or sliding bearing with such a bearing component.

With regard to the bearing component, this object is achieved according to the invention by a bearing component having the features of claim 1. With regard to the method of production, this object is achieved by the features of claim 13. An inventive rolling or sliding bearing is the subject of claim 14.

A bearing component according to the invention of a roller bearing or slide bearing has a tread layer forming a tread, wherein the tread layer consists of at least one matrix material and at least one dispersion material at least partially dispersed in the at least one matrix material.

The term "dispersed" is to be understood according to the invention that particles of the dispersion material are arranged discretely within the matrix material. The tread layer according to the invention therefore consists of a heterogeneous mixture, which is formed by the at least one matrix material and the at least one dispersion material. In this case, the at least one dispersion material is preferably mixed in the solid state or in the liquid state in a matrix of at least one matrix material in the liquid state, the dispersion produced thereby being fixed by hardening of the matrix material.

By dispersing a dispersion material in a matrix material, the possibilities of combining different materials are increased, so that, as a result, tread layers with improved hardness and wear properties can be produced. By dispersing material pairings can be realized, which would lead to no or only insufficient adhesion of the coating by means of the conventional coating of a bearing component. This is especially true for dispersion materials with very high hardness, such as titanium carbides.

Materials with hardness and wear properties such as titanium carbides can be applied in part only with considerable effort by coating on a relatively soft base material. If the application of such a coating should be feasible, however, there is still the risk of detachment during operation. Because of the different properties of the materials, different expansions between the base body and the coating can occur. This applies in particular against the background of permissible operating temperatures of bearing components, which can sometimes fluctuate between -50 and +100 ° C.

In contrast, disperse materials of very high hardness, such as titanium carbides can connect by means of Eindispergierens in a matrix material with this and can form a solid, hard and wear-resistant composite material together with the respective matrix material.

Preferably, the dispersion material is completely dispersed in the matrix material. But it is also possible that the dispersion material is only partially dispersed in the matrix material and partly eliminated in the matrix material. In this case, the proportion of the dispersion material precipitated in the matrix material should be kept as low as possible in order to avoid impairing the hardness of the respective tread layer.

According to a possible embodiment of the bearing component, the tread layer is arranged on a base body of at least one starting material. The main body of the bearing component can thus have other mechanical properties relative to the tread layer, which can be selectively adjusted depending on the application by selecting the starting material. The differences in the mechanical properties of the base body and the tread layer can be achieved, in particular, by virtue of the starting material being different from the matrix material or if the starting material, if it is formed integrally with the matrix material, is free of dispersed-in particles of the dispersion material.

The tread layer may be part of the body. In particular, the tread layer can be formed integrally and / or integrally with the main body or formed on this. In this way, a possible detachment of the tread layer from the main body can be avoided.

It is also possible that the tread layer is thermally and / or mechanically connected to the base body. The tread layer can accordingly be understood as a coating applied to the base body.

For the purposes of this invention, a thermal connection means that the at least one starting material and / or the at least one matrix material is melted and solidifies in a state in which the at least one starting material and the at least one matrix material are in contact. This is usually done by cooling the material to below its melting temperature. For example, the two connection partners, i. the base body and the matrix material of the tread layer are already in contact when one or both of the connection partners are melted.

Alternatively, it would be a thermal coating method, wherein the at least one matrix material is applied in the molten and plastic state to the at least one starting material. This at least one starting material is preferably also separately or by the thermal energy of the applied matrix material also melted, so that both connection partners are at the same time in a plastic state and can enter a particularly firm connection. The at least one starting material and / or the at least one matrix material does not necessarily have to be completely melted. It is usually sufficient if only a thin contact area is melted to the respective connection partner. In the thermal coating process, the at least one matrix material is preferably completely melted and shaped by the application process in the plastic state or adapted to the contour of the starting material.

Another possibility of the thermal connection is that the at least one starting material and the at least one matrix material are welded. For the purposes of this invention, welding means the non-detachable bonding of the at least one starting material to the at least one matrix material using heat and / or pressure, with or without welding consumables, the materials to be joined being heated until they liquefy and mix that they are firmly connected after solidification.

Mechanical connection can be understood as any suitable non-positive and / or positive connection between the base body and the tread layer.

Advantageously, the tread layer may be formed by melting the matrix material and feeding the dispersion material into the matrix material melt.

If the tread layer is thermally and / or mechanically bonded to the base body, the dispersion material can be dispersed in the matrix material before, during or even after the tread layer has been bonded to the base body. For example, when the matrix material is completely melted for connection to the starting material of the base body, the dispersion material can be simultaneously introduced into the matrix material melt. It is the same possible to remelt the matrix material of the tread layer after connection to the base body, and to feed the dispersion material into the melt.

Overall, this makes a hard, wear-resistant, corrosion-resistant, non-embrittling and suitable as a bearing raceway and arranged on a body tread layer for use in rolling and sliding bearings are accomplished. Advantageously, the tread extends along a line, preferably a straight or curved line, preferably along a closed line, more preferably along a line of constant radius of curvature such as a circular line.

It may prove advantageous if the at least one dispersion material has particle sizes between 10 and 60 μm, preferably between 22 and 45 μm. This can ensure a favorable dispersion of the dispersion material particles in the matrix material. In addition, by such particle sizes, the excretion of the dispersion material in the matrix material can be reduced to a small degree.

Furthermore, according to an advantageous embodiment of the bearing component, the tread layer has a thickness of at least 0.5 mm, preferably 0.8 mm to 1.2 mm, preferably 1 mm. In this way it can be ensured that a sufficiently thick tread layer is available for the respective application, which sufficiently withstands the mechanical loads applied during operation.

Good hardness and wear properties can advantageously be achieved in that the tread layer has a volume fraction of 20 to 60%, preferably, 30 to 60%, preferably 40 to 60%, preferably 50 to 60%, preferably 52 to 56% Has 54% of dispersion material and / or that the tread layer has a volume fraction of 40 to 80%, preferably, 40 to 70%, preferably 40 to 60%, preferably 40 to 50%, preferably 44 to 48%, preferably 46% matrix material. In addition, the preferred volume fractions of the dispersion material and / or of the matrix material can reduce the risk of the formation of defects in the tread layer.

Furthermore, it may prove advantageous if the cross section of the tread layer to an area ratio of 20 to 60%, preferably, 30 to 60%, preferably 40 to 60%, preferably 50 to 60%, preferably 52 to 56%, preferably 54% is formed by the dispersion material and / or if the cross section of the tread layer to an area fraction of 40 to 80%, preferably, 40 to 70%, preferably 40 to 60%, preferably 40 to 50%, preferably 44 to 48%, preferably 46% is formed by the matrix material. The influence of the tread heterogeneity on its mechanical properties can thereby be reduced to a low level.

• – Der wenigstens eine Matrixwerkstoff ist mit dem wenigstens einen Ausgangswerkstoff chemisch identisch.
• – Der wenigstens eine Matrixwerkstoff ist von dem wenigstens einen Ausgangswerkstoff chemisch verschieden.
• – Der wenigstens eine Matrixwerkstoff ist chemisch verschieden von dem wenigstens einen Dispersionswerkstoff, vorzugsweise chemisch verschieden von allen Dispersionswerkstoffen.
• – Wenigstens ein Matrixwerkstoff wirkt gegenüber Strom isolierend.
• – Wenigstens ein Matrixwerkstoff ist aus einer der folgenden Werkstoffgruppen ausgewählt: • Kunststoffe, vorzugsweise thermoplastische Kunststoffe. • Metalle, vorzugsweise Aluminium, Titan, Bronze, Messing oder Stahl. • Legierungen mit Aluminium, Titan, Bronze, Messing oder Stahl als Basismetall.

It may prove advantageous if the at least one matrix material fulfills at least one of the following requirements:

• The at least one matrix material is chemically identical to the at least one starting material.
• The at least one matrix material is chemically different from the at least one starting material.
• The at least one matrix material is chemically different from the at least one dispersion material, preferably chemically different from all the dispersion materials.
• - At least one matrix material is insulating against electricity.
• At least one matrix material is selected from one of the following material groups: Plastics, preferably thermoplastics. • metals, preferably aluminum, titanium, bronze, brass or steel. • Alloys with aluminum, titanium, bronze, brass or steel as base metal.

With aluminum alloys or titanium alloys low component weights can be realized, the titanium alloys are additionally wear-resistant and heat and corrosion resistant. Bronze alloys offer other benefits such as high toughness and runflat properties.

• – Wenigstens ein Dispersionswerkstoff wirkt gegenüber Strom isolierend.
• – Wenigstens ein Dispersionswerkstoff ist aus einer der folgenden Werkstoffgruppen ausgewählt: • Kunststoffe, vorzugsweise thermoplastische Kunststoffe. • Metalle, vorzugsweise Titan, Kobalt, Nickel, Aluminium oder Stahl, bevorzugt zäh- harter Chrom und/oder Nickelstahl. • Legierungen, vorzugsweise mit Kobalt, Nickel, Aluminium als Basismetall, bevorzugt mit Titancarbid und/oder Vanadiumcarbid als Legierungsanteil. • Titancarbide. • Diamantwerkstoffe. • Verbundwerkstoffe, bevorzugt Aluminium- / Silizium Verbundwerkstoffe mit Carbiden.

However, it can also be advantageous if the at least one dispersion material fulfills at least one of the following requirements:

• - At least one dispersion material is insulating against electricity.
• - At least one dispersion material is selected from one of the following material groups: • Plastics, preferably thermoplastics. Metals, preferably titanium, cobalt, nickel, aluminum or steel, preferably toughened chromium and / or nickel steel. Alloys, preferably with cobalt, nickel, aluminum as base metal, preferably with titanium carbide and / or vanadium carbide as alloying fraction. • titanium carbide. • Diamond materials. • Composite materials, preferably aluminum / silicon composites with carbides.

According to a preferred embodiment of the invention, the bearing component is formed as an inner ring, outer ring, cage or rolling elements of a rolling bearing, wherein the rolling body is preferably spherical, conical or cylindrical.

• – Beaufschlagung des wenigstens einen Matrixwerkstoffs mit Energie, vorzugsweise mit Licht, bevorzugt mit Laserlicht, wobei die Intensität der Energie bevorzugt in Abhängigkeit von dem Matrixwerkstoff im Bereich von 1 bis 500 kW/cm², vorzugsweise im Bereich von 5 bis 100 kW/cm², bevorzugt im Bereich on 20 bis 50 kW /cm² gewählt wird, so dass die Eindringtiefe eines Energiestrahls in den wenigstens einen Matrixwerkstoff im Bereich von 20 µm bis 2 mm, vorzugsweise von 100 µm bis 1,5 mm, bevorzugt im Bereich von 0,8 mm bis 1,2 mm liegt.
• – Erhitzen des wenigstens einen Matrixwerkstoffs auf eine Temperatur oberhalb der Schmelztemperatur, wobei vorzugsweise im Falle verschiedener Matrixwerkstoffe mit unterschiedlichen Schmelztemperaturen die höchste Schmelztemperatur maßgeblich ist.
• – Partielles oder vollflächiges Aufschmelzen des wenigstens einen Matrixwerkstoffs, wobei der wenigstens eine Matrixwerkstoff besonders bevorzugt bis in eine Tiefe im Bereich von 20 µm bis 2 mm, vorzugsweise im Bereich von 100 µm bis 1,5 mm, bevorzugt im Bereich von 0,8 mm bis 1,2 mm von der Lauffläche aufgeschmolzen wird.
• – Zuführen des wenigstens einen Dispersionswerkstoffs in diskontinuierlicher und/oder in kontinuierlicher Form, vorzugsweise in Pulverform, wobei die Parikelgrößen eines in Pulverform aufgetragenen Dispersionswerkstoffs im Bereich von 20 bis 100 µm, vorzugsweise von 40 bis 80 µm, bevorzugt im Bereich von 22 bis 45 µm liegen.
• – Abkühlen des wenigstens einen Matrixwerkstoffs bis unterhalb der Schmelztemperatur.
• – Mechanisches Bearbeiten der Laufflächenschicht vor und/oder nach dem Eindispergieren des wenigstens einen Dispersionswerkstoffs, vorzugsweise durch Drehen, Schleifen oder mit anderen spanabhebenden Verfahren.

The object of the invention is also achieved by a method for producing the bearing component, preferably according to at least one of the preceding embodiments, comprising at least one of the following steps:

• - Applying to the at least one matrix material with energy, preferably with light, preferably with laser light, wherein the intensity of energy preferably in dependence of the matrix material in the range of 1 to 500 kW / cm ² , preferably in the range of 5 to 100 kW / cm ² is preferably selected in the range from 20 to 50 kW / cm ² , so that the penetration depth of an energy beam into the at least one matrix material is in the range from 20 μm to 2 mm, preferably from 100 μm to 1.5 mm, preferably in the range from 0 , 8 mm to 1.2 mm.
• - Heating the at least one matrix material to a temperature above the melting temperature, wherein preferably in the case of different matrix materials with different melting temperatures, the highest melting temperature is decisive.
• Partial or full surface melting of the at least one matrix material, wherein the at least one matrix material particularly preferably to a depth in the range of 20 microns to 2 mm, preferably in the range of 100 microns to 1.5 mm, preferably in the range of 0.8 mm is melted to 1.2 mm from the tread.
• - Supplying the at least one dispersion material in discontinuous and / or continuous form, preferably in powder form, wherein the particle sizes of a powdered dispersion material in the range of 20 to 100 .mu.m, preferably from 40 to 80 .mu.m, preferably in the range of 22 to 45 microns lie.
• Cooling the at least one matrix material below the melting temperature.
• - Machining the tread layer before and / or after the dispersion of the at least one dispersion material, preferably by turning, grinding or other machining methods.

Another aspect of the invention relates to a rolling or sliding bearing with at least one bearing component according to at least one of the preceding embodiments.

Brief description of the drawings

1 shows a schematic side view of a roller bearing having a tread layer according to the invention having an inner ring, a tread layer according to the invention having outer ring, a tread having a tread layer according to the invention and having a plurality of rolling elements according to the invention bearing elements as bearing components according to the invention.

2 shows a schematic side view of a sliding bearing with a tread layer according to the invention comprising a base body which extends along a straight line, as a first bearing component and along the running surface of the first bearing component displaceable second bearing component, which also has a tread layer according to the invention.

3 schematically shows different possibilities of surface treatment along with associated sectional images.

4 shows micrographs of a tread layer according to the invention with einispergierten hard material particles of titanium carbide.

5 shows a graphical analysis and a further enlarged microsection of a tread layer according to the invention with einispergierten hard material particles of titanium carbide.

6 shows graphical analyzes and associated micrographs of a tread layer according to the invention with different contents of dispersed titanium carbide hard material particles.

Detailed Description of the Preferred Embodiments

The invention is particularly concerned with the provision of a hard, wear-resistant, corrosion-resistant, non-embrittling and suitable as a bearing raceway tread layer for use in rolling and plain bearings. The tread layer can be arranged on a base body or be part of a base body. The execution of the respective body is possible as a bearing ring, as a cage, as rolling elements or as a linear system. The bearing raceway or surface can be designed for rolling elements or plain bearings.

materials

Advantageous starting materials for a basic body of the respective bearing component are in particular alloys based on aluminum, titanium or bronze, as well as brass or steel.

Advantageous matrix materials for a tread layer according to the invention of the respective bearing component are in particular aluminum, alloys based on aluminum, titanium or bronze, and brass or steel. In a further advantageous manner, the matrix material is identical to the starting material. Preferably, the matrix material is integrally formed with the starting material or materially connected.

Advantageous dispersion materials for a tread layer of the respective bearing component according to the invention are in particular titanium carbides, diamond materials, alloys based on aluminum, cobalt or nickel, in particular aluminum-based alloys with titanium and vanadium carbide, tough-hard chromium nickel steels or aluminum / silicon composite materials with carbides.

method

To produce the tread layer according to the invention, the matrix material can be converted into a melt into which the dispersion material is then fed. After solidification of the melt, the particles of the dispersion material are held firmly within the matrix material. The process for producing a tread layer according to the invention may comprise the following steps:
First, the matrix material can be energized, preferably with light, preferably with laser light, wherein the intensity of the energy preferably in the range of 1 to 500 kW / cm ² , preferably in the range of 5 to 100 kW / cm ^2, depending on the matrix material , preferably in the range from 20 to 50 kW / cm ² can be selected, so that the penetration depth of an energy beam in the at least one matrix material in the range of 20 microns to 2 mm, preferably in the range of 100 .mu.m to 1.5 mm, preferably in Range from 0.8 mm to 1.2 mm.

By applying energy to the matrix material, it can be heated until a temperature above the melting temperature is established in the matrix material, with the highest melting temperature preferably being decisive in the case of different matrix materials having different melting temperatures.

The at least one matrix material can thereby be partially or completely melted, wherein the at least one matrix material preferably to a depth in the range of 20 microns to 2 mm, preferably from 100 microns to 1.5 mm, preferably in the range of 0.8 mm 1.2 mm from the tread can be melted.

After partial or full-surface melting of the matrix material, the at least one dispersion material can be fed into the matrix material melt in discontinuous and / or continuous form. Preferably, the dispersion material may be supplied in powder form, wherein the particle sizes of a powdered dispersion material in the range of 20 to 100 .mu.m, preferably from 40 to 80 .mu.m, preferably in the range of 22 to 45 microns can be.

Subsequently, the at least one matrix material can be cooled below the melting temperature. The supplied particles of the dispersion material are thus securely held in the solidified matrix material.

Mechanical machining

Depending on the selected matrix material and the selected dispersion material, the respective tread layer can subsequently be processed by turning, grinding or by other machining methods.

Benefits / Benefits

There are applications in the field of rolling or plain bearings which, for example, require a low component weight with high demands on the properties of the raceways. The disadvantages of the starting material of a base body - for example, too low a hardness - are thus effectively compensated by the tread layer according to the invention.

Preferred embodiments of the invention will be described below in detail with reference to the figures.

First embodiment

The first in 1 embodiment shown relates to a rolling bearing with four bearing components according to the invention, wherein the first bearing component as an inner ring 1 with a tread layer 4 is formed and the second bearing component as an outer ring 2 with a tread layer 5 is trained. The third bearing component is characterized by a variety of rolling rolling elements 3 with a tread layer 6 formed, wherein the rolling elements 3 between the inner ring 1 and the outer ring 2 are arranged through a tread layer having a cage 7 be held as a fourth bearing component at a distance to the through the tread layer 4 of the inner ring 1 and through the tread layer 5 of the outer ring 2 circulating formed treads. However, it is not required that all basic body 1 . 2 . 3 . 7 the components with a tread layer according to the invention 4 . 5 . 6 are provided. In particular, individual of the main body 1 . 2 . 3 . 7 Free of a tread layer or have a coating. For example, the main body of the cage 7 free from a tread layer and instead be provided with a suitable coating.

The tread layers 4 . 5 . 6 can be prepared by the method described above. In this case, the tread layers 4 . 5 . 6 Part of the respective basic body 1 . 2 . 3 . 7 be, ie directly on the basic bodies 1 . 2 . 3 . 7 are formed. It is also possible that the tread layers 4 . 5 . 6 subsequently on the respective basic bodies 1 . 2 . 3 . 7 be applied and about thermally and / or mechanically with the basic bodies 1 . 2 . 3 . 7 get connected.

The basic body 1 . 2 . 3 . 7 may consist of identical or different starting materials, wherein also the matrix materials and / or dispersion materials of the tread layers 4 . 5 . 6 may be identical or different. In order to allow the lowest possible material stresses with temperature fluctuations, it may be useful if at least two or preferably all basic body 1 . 2 . 3 . 7 have the same starting material and / or at least two or preferably all tread layers 4 . 5 . 6 are made of the same matrix or dispersion materials.

Second embodiment

The second in 2 embodiment shown relates to a linear slide bearing with two bearing components according to the invention, wherein a bearing component an elongated body 8th has, the upper side a tread layer according to the invention 9 has, which forms a running surface, along which a second bearing component, also with a base body 10 and a tread layer 11 is slidably mounted sliding.

The tread layers 9 . 11 can be prepared by the method described above. In this case, the tread layers 9 . 11 Part of the respective basic body 8th . 10 , ie directly on the basic bodies 8th . 10 be educated. It is also possible that the tread layers 9 . 11 subsequently to the respective basic body 8th . 10 be applied and about thermally and / or mechanically with the basic bodies 8th . 10 get connected.

micrographs

In the illustrations in 3 are schematically contrasted with different possibilities of surface treatment of materials together with associated micrographs. The upper diagram under a) shows an alloyed surface layer 12 , to a starting material of a basic body 14 borders. To the right is a micrograph of such an alloyed surface layer. The middle illustration under b) shows a coating 16 , based on a starting material of a basic body 18 was applied by means of build-up welding. In an intermediate layer 20 it is to a thorough mixing of the coating material of the coating 16 and the starting material of the body 20 came. To the right is a microsection of such a coating. The lower diagram under c) shows a tread layer 22 attached to a body 24 is arranged from a starting material. Right next to it is a microsection of such a tread layer 22 displayed. The tread layer 22 consists of a matrix material 26 as well as dispersed solid particles 28 from a dispersion material. The matrix material preferably consists of aluminum, preferably of an aluminum alloy, in particular of the aluminum material of the designation 3.4345. The solid particles of the dispersion material are preferably made of titanium carbide. But other high-hardness materials, such as diamond, can be used as a dispersion material.

Further micrographs of a tread layer according to the invention with dispersed-in hard titanium carbide particles are shown in FIGS 4 and in a further enlarged view of the 5 refer to. The right representation in 5 It can be seen that smaller particles of the titanium carbide dispersion material can form precipitates in the matrix material melt of the aluminum alloy. For this reason, it is advantageous to limit the spectrum of the particle sizes of the dispersion material, in particular to screen out minute particles before dispersing the dispersion material. As a result, precipitates can be reduced to a low level.

Of the 6 Different graphic analyzes and associated micrographs of a tread layer according to the invention with different contents of dispersed hard material particles of titanium carbide can be taken. The left-hand diagram under d) shows the graphic analysis of a tread layer with a volume fraction of 26% titanium carbide with a tread layer thickness of 800 μm. Under the graphical analysis, an associated microsection is shown. The middle representation under e) shows the graphic analysis of a tread layer with a volume fraction of 38% titanium carbide with a tread layer thickness of 620 μm. Under the graphical analysis, an associated microsection is shown. The right-hand illustration under f) shows the graphic analysis of a tread layer with a volume fraction of 54% titanium carbide with a tread layer thickness of 840 μm. Under the graphical analysis, an associated microsection is shown. The best results in terms of hardness and wear properties have been achieved with a carbide content of 54 vol .-%, wherein an even higher content of titanium carbide can lead to difficulties in dispersing in the matrix material.

Claims (14)

Bearing component of a rolling or sliding bearing with a tread forming a tread, characterized in that the tread layer of at least one matrix material and at least one in the at least one matrix material at least partially dispersed dispersion material. Bearing component according to claim 1, characterized in that the tread layer is arranged on a base body of at least one starting material. Bearing component according to claim 2, characterized in that the tread layer is part of the body. Bearing component according to claim 2, characterized in that the tread layer is thermally and / or mechanically connected to the base body. Bearing component according to at least one of the preceding claims, characterized in that the tread layer is formed by melting the matrix material and feeding the dispersion material into the matrix material melt. Bearing component according to at least one of the preceding claims, characterized in that the at least one dispersion material particle sizes between 10 and 60 microns, preferably between 22 and 45 microns. Bearing component according to at least one of the preceding claims, characterized in that the tread layer has a thickness of at least 0.5 mm, preferably 0.8 mm to 1.2 mm, preferably 1 mm Bearing component according to at least one of the preceding claims, characterized in that the tread layer has a volume fraction of 20 to 60%, preferably, 30 to 60%, preferably 40 to 60%, preferably 50 to 60%, preferably 52 to 56%, preferably 54% Having dispersion material and / or that the tread layer has a volume fraction of 40 to 80%, preferably, 40 to 70%, preferably 40 to 60%, preferably 40 to 50%, preferably 44 to 48%, preferably 46% matrix material. Bearing component according to at least one of the preceding claims, characterized in that the cross section of the tread layer to an area fraction of 20 to 60%, preferably, 30 to 60%, preferably 40 to 60%, preferably 50 to 60%, preferably 52 to 56%, preferably 54% is formed by the dispersion material and / or that the cross section of the tread layer to an area ratio of 40 to 80%, preferably, 40 to 70%, preferably 40 to 60%, preferably 40 to 50%, preferably 44 to 48%, preferably 46% is formed by the matrix material. Bearing component according to at least one of the preceding claims, characterized in that the at least one matrix material satisfies at least one of the following requirements: a. The at least one matrix material is chemically identical to the at least one starting material. b. The at least one matrix material is chemically different from the at least one starting material. c. The at least one matrix material is chemically different from the at least one dispersion material, preferably chemically different from all dispersion materials. d. At least one matrix material is insulating against electricity. e. At least one matrix material is selected from one of the following material groups: i. Plastics, preferably thermoplastics. ii. Metals, preferably aluminum, titanium, bronze brass or steel. iii. Alloys with aluminum, titanium, bronze brass or steel as base metal. Bearing component according to at least one of the preceding claims, characterized in that the at least one dispersion material fulfills at least one of the following requirements: a. At least one dispersion material is insulating against electricity. b. At least one dispersion material is selected from one of the following material groups: i. Plastics, preferably thermoplastics. ii. Metals, preferably titanium, cobalt, nickel, aluminum or steel, preferably tough-hard chromium and / or nickel steel. iii. Alloys, preferably with cobalt, nickel, aluminum as base metal, preferably with titanium carbide and / or vanadium carbide as alloying fraction. iv. Titanium Carbide. v. Diamond materials. vi. Composite materials, preferably aluminum / silicon composites with carbides. Bearing component according to at least one of the preceding claims, characterized in that the bearing component is formed as an inner ring, outer ring, cage or rolling element of a rolling bearing, wherein the rolling body is preferably spherical, conical or cylindrical. Process for producing the bearing component, preferably according to at least one of the preceding claims, characterized by at least one of the following steps: a. Applying energy to the at least one matrix material, preferably with light, preferably with laser light, the intensity of the energy preferably being in the range of 1 to 500 kW / cm ² , preferably in the range of 5 to 100 kW / cm ² , depending on the matrix material, is preferably selected in the range of 20 to 50 kW / cm ² , so that the penetration depth of an energy beam into the at least one matrix material in the range of 20 microns to 2 mm, preferably from 100 microns to 1.5 mm, preferably in the range of 0, 8 mm to 1.2 mm. b. Heating the at least one matrix material to a temperature above the melting temperature, wherein preferably in the case of different matrix materials having different melting temperatures, the highest melting temperature is decisive. c. Partial or full-surface melting of the at least one matrix material, wherein the at least one matrix material particularly preferably to a depth in the range of 20 microns to 2 mm, preferably from 100 microns to 1.5 mm, preferably in the range of 0.8 mm to 1, 2 mm from the tread is melted. d. Supplying the at least one dispersion material in discontinuous and / or continuous form, preferably in powder form, wherein the particle sizes of a powdered dispersion material in the range of 20 to 100 .mu.m, preferably from 40 to 80 .mu.m, preferably in the range of 22 to 45 microns , e. Cooling the at least one matrix material below the melting temperature. f. Mechanically working the tread layer before and / or after dispersing the at least one dispersion material, preferably by turning, grinding or by other machining methods. Rolling or sliding bearing with at least one bearing component according to at least one of the preceding claims.

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