Brake Disc Cooling Duct Coating for Uniform Corrosion Protection
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Solution Overview
Problem
Conventional brake disk coatings struggle to achieve homogeneous thickness on ventilated brake disks with cooling ducts due to partitions and undercuts, leading to sporadic uncoated areas.
Innovation Solution
A wet-chemical or galvanic method is used to apply a nickel or chromium alloy coating directly onto the surfaces of the cooling ducts, eliminating the need for spray nozzles and ensuring a homogeneous anti-corrosion layer, while sealing other surfaces to prevent unwanted coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spray nozzles are used to apply anti-corrosion coating, then the coating process is simple and fast, but homogeneous coating thickness cannot be achieved in cooling ducts with partitions and undercuts
Solution Approach 1:
The patent replaces the mechanical spray coating system with a wet-chemical or galvanic coating system. Instead of using spray nozzles that mechanically deposit paint, the invention uses chemical solutions or galvanic processes that automatically penetrate and coat complex geometries including partitions and undercuts, achieving uniform coating thickness without mechanical intervention in difficult-to-reach areas
Solution Approach 2:
The wet-chemical or galvanic coating process is self-service in nature, where the coating material automatically distributes itself throughout the cooling duct geometry without requiring external spray equipment. The chemical or electrochemical process naturally reaches all surfaces including partitions and undercuts, eliminating the need for complex spray nozzle positioning and operation
2Reliability
If the entire brake disk surface is coated with anti-corrosion material, then comprehensive corrosion protection is achieved, but brake surfaces and hat areas are unnecessarily loaded with coating material
Solution Approach 1:
The patent applies local quality by selectively coating only the cooling duct surfaces while leaving other brake disk surfaces uncoated. The wet-chemical or galvanic process is localized to the cooling duct geometry, ensuring that anti-corrosion protection is applied precisely where needed without depositing coating material on brake surfaces or the brake disk hat where it is not required
3Manufacturing precision
If spray nozzles are introduced into cooling ducts to achieve coating, then complex device structure is required, but this increases manufacturing complexity and cost
Solution Approach 1:
The patent eliminates complex mechanical spray nozzle systems by replacing them with simple wet-chemical or galvanic coating setups. Instead of requiring spray nozzles, positioning mechanisms, and complex delivery systems, the invention uses straightforward chemical immersion or galvanic cell configurations that are much simpler in device structure while achieving the same coating coverage in cooling ducts
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides reliable, wear-resistant anti-corrosion protection specifically to the cooling ducts, preventing corrosion and extending the brake disk's service life by ensuring a uniform coating thickness and avoiding coating on non-target surfaces.
Implementation Method 1
the anti-corrosion coating is applied by way of a wet-chemical or galvanic method
Implementation Method 2
the anti-corrosion coating is applied by way of a wet-chemical or galvanic method
Implementation Method 3
Chemical or galvanic nickel is applied as anti-corrosion coating. The nickel coating has already proven to be reliable and wear-resistant
Implementation Method 4
The nickel coating has already proven to be reliable and wear-resistant
Data Source
AI summary
In a method for producing a brake disc for a motor vehicle, a base disc, which is made of cast iron or aluminum in particular, is provided and equipped with an anti-corrosion layer. The anti-corrosion layer is applied using a wet chemical or galvanic method.