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Brake disc for a motor vehicle

A technology for brake discs and automobiles, applied in the direction of brake discs, brake types, brake components, etc., can solve the problems of increasing the risk of corrosion around the notch, corrosion of the substrate, etc., to improve corrosion resistance and crack resistance, The effect of prolonging the service life and reducing costs

Inactive Publication Date: 2017-02-15
DAIMLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such notches penetrate the cover layer, which may again lead to corrosion of the substrate
Increased risk of corrosion on the edges surrounding the recess, even if the cover layer is applied after the recess has been inserted

Method used

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  • Brake disc for a motor vehicle
  • Brake disc for a motor vehicle
  • Brake disc for a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0051] The invention relates to a brake disc 1 having a substrate 2, in particular a gray cast iron substrate, whose corrosion and wear properties are achieved by a hardened surface layer 3 and a cover layer 4 applied thereon, depending on The situation can also be improved by a further layer in which the color change 5 and the recess 6 are embedded in the cover layer 4 , which do not penetrate the cover layer 4 . These layers prevent or mitigate the propagation of cracks that may arise on the surface, for example during operation of the brake disc 1 . Crack propagation to the substrate 1 is prevented, which also effectively prevents corrosive penetration of these layers and thus prevents or greatly delays failure of the brake disc 1 , for example by delamination. The recess 6 can be used, for example, for cleaning the brake lining or be designed as a wear marker.

[0052] exist figure 1 The brake disc 1 shown in has a hub 7 and at least one (for example two) friction surfac...

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Abstract

The invention relates to a brake disc (1) for a motor vehicle comprising a substrate (2), in particular a grey cast substrate, at least one friction surface (8) formed on the substrate (2) and at least one cover layer which is applied to the at least one friction surface (8). Said cover layer is harder and thinner than the substrate (2), and colour changes (9) are introduced into the cover layer by means of a pulsed laser for identification purposes.

Description

technical field [0001] The invention relates to a brake disc for a motor vehicle / vehicle comprising a substrate, in particular a gray cast iron substrate, at least one friction surface built on said substrate and at least one friction surface applied to said at least one friction surface at least one overlay on the The invention also relates to a method of manufacturing such a brake disc. Background technique [0002] The brake disc has friction surfaces which, together with the brake linings, form a tribological system. In a brake, if the stationary friction lining comes into contact with the rotating friction surface, the friction surface of the brake disc heats up due to friction. The braking effect depends on the state and surface properties of the friction surfaces. It is this temperature increase of the brake disc, which is caused by the braking process, which, if appropriate, together with aggressive media such as water and snow melting salts, can cause or accelera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12
CPCF16D65/127F16D2200/0078F16D2200/0047F16D2250/0046F16D2250/0069F16D2200/0013C23C8/10C23C8/22C23C8/26C23C8/46C23C8/50C23C8/80C25D11/02F16D65/125F16D69/027F16D69/04F16D2065/132F16D2069/0491
Inventor O·伦巴赫
Owner DAIMLER AG