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Process for coating a brake disk and brake disk produced by the process

A brake disc and surface coating technology, which is applied to brake discs, brake components, coatings, etc., can solve the problems of surface coating damage, surface coating peeling, surface coating corrosion penetration, etc.

Inactive Publication Date: 2013-07-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical stresses between the surface coating and the brake disc can lead to damage to the surface coating, for example due to the formation of cracks, which can lead to corrosion penetration of the surface coating and peeling off of the surface coating (delamination), for example due to the attack of salt water in winter )

Method used

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  • Process for coating a brake disk and brake disk produced by the process
  • Process for coating a brake disk and brake disk produced by the process

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] exist figure 1 The brake disc 1 according to the invention shown in , has a circular-hole-shaped brake ring 2 and a pot-shaped hub 3 , which form a concentric whole. The circular hole-shaped disc-type positive end face of the brake ring 2 forms the friction surface 4 of the brake disc 1. During braking and for braking, the friction brake of the disc brake not shown in the figure is also not shown. The layers press against the friction surface 4 . The brake ring 2 can also be understood as a real brake disc. The brake disk 1 is made of gray cast iron, ie cast iron with flake graphite.

[0014] The brake disk 1 has a low-temperature coated intermediate layer 5 . The intermediate layer 5 consists of a metal or an alloy, for example including nickel, copper and / or chromium. The intermediate layer 5 is deposited, for example, by chemical or electrochemical methods. The intermediate layer 5 covers the friction ring 2 , ie the adjoining area of ​​the friction surface 4 an...

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Abstract

A gray cast iron brake disk (1) for a motor vehicle has a wear-reducing surface coating (6) applied thermally, for example, by flame spraying. The brake disk also includes an intermediate layer (5) of, for example, nickel. Due to its resilience, the intermediate layer reduces mechanical stress between the surface coating (6) and the brake disk (1).

Description

technical field [0001] The invention relates to a method for coating the friction surface of a metal brake disc of a disc brake of a land vehicle, in particular a motor vehicle, having the features stated in the preamble of claim 1 , and to a method having the features stated in the preamble of claim 6 . The brake disc manufactured by the method of the present invention according to the above features. Background technique [0002] Brake disks for motor vehicle disk brakes made of metal, in particular steel or gray cast iron, are known. Hot surface coatings, eg using chromium carbide and / or tungsten carbide, are known to reduce wear. The entire brake disc can be surface-coated, but it is sufficient to only coat the friction surface of the brake disc, that is, the hole-shaped disc surface of the brake disc. When braking or for braking, friction brakes The coating presses the hole-shaped disc surface. Application of a wear-reducing surface coating on the brake disc, or at l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12
CPCC23C4/00F16D65/12C23C4/02C23C4/10C23C28/30C23C28/32C23C28/34F16D65/125F16D65/127F16D2200/0013F16D2200/0026F16D2250/0046B05D7/14
Inventor W·许申赫费尔G·克特勒R·凯勒J·哈肯贝格R·拉布V·杜普伊斯O·布加达H·库克特A·迈尔
Owner ROBERT BOSCH GMBH
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