Corrosion-Resistant Grinding Tool Metal Layer
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Solution Overview
Problem
In lightweight construction, carbon fiber reinforced plastics (CFRP) are electrically conductive and can cause corrosion on less noble light metals, leading to contamination and increased corrosion risk in hybrid components.
Innovation Solution
A method for producing a grinding tool involving a metal layer with specific electrical conductivity and standard potential, applied in a film-like manner to a non-metallic tool base body, ensuring the layer is elastic and ductile, and free from copper to prevent corrosion, using nickel or titanium, and solid particles to enhance bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a metal layer is applied to the auxiliary body for producing the grinding tool, then the tool can be manufactured with good bonding and structural integrity, but the metal contamination may promote corrosion of hybrid components in lightweight construction
Solution Approach 1:
The patent changes the chemical composition parameters of the metal layer by selecting specific metals (nickel, stainless steel, gold) with appropriate electrical conductivity (1·10^6 to 50·10^6 S/m) and standard potential (0.35 V to 1.8 V) to achieve both good bonding and corrosion prevention
Solution Approach 2:
The patent uses composite material structure with a non-metallic tool base body combined with a specially selected metal layer that has specific electrical and electrochemical properties to prevent corrosion while maintaining manufacturing quality
2Reliability
If copper is used in the metal layer for electrical conductivity, then the electrical conductivity is improved, but the corrosion risk to light metals in hybrid components increases
Solution Approach 1:
The patent extracts copper from the list of permissible metals in the metal layer, specifically excluding it despite its good electrical conductivity, because copper contamination promotes corrosion of light metals in hybrid components
Solution Approach 2:
The patent introduces nickel, stainless steel, or gold as intermediary materials that provide the necessary electrical conductivity (1·10^6 to 50·10^6 S/m) without the harmful corrosion-promoting effects of copper, acting as a safe mediator between electrical requirements and corrosion prevention
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
The grinding tool is simple and economical to produce, applicable without restriction in lightweight construction, particularly in the aerospace industry, preventing corrosion by ensuring the metal layer does not promote contamination and maintaining tool integrity.
Implementation Method 1
For example, the grinding layer is galvanically applied to the metal layer
Data Source
AI summary
In a method for the production of a grinding tool, a metal layer (3) is applied to an auxiliary body (7). After separating the metal layer (3) from the auxiliary body (7), the metal layer (3) is fixed to a tool base body. A grinding layer is then applied to the metal layer (3). The method allows a simple and economical production of a grinding tool that can be used without restriction in lightweight construction.