Multi-Cone Anchor Coating for Corrosion Protection and Sliding
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Solution Overview
Problem
Cold-formed multi-cone anchoring elements in chemical fastening technology face issues with scale formation and surface roughness due to fire dip galvanization, leading to increased friction resistance and reduced functionality, while direct application of deck coating over protective coating results in loss of sliding properties.
Innovation Solution
A procedure involving galvanic galvanizing, application of a protective coating, a primer, and a deck coating to improve corrosion protection and sliding properties, ensuring the primer prevents absorption of the deck coating by the protective layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fire dip galvanization is applied to cold-formed multi-cone anchoring elements, then corrosion protection is improved, but surface roughness and scale formation increase leading to reduced sliding properties
Solution Approach 1:
The coating system is segmented into multiple functional layers: galvanic zinc layer for corrosion protection, protective coating for sealing, primer for adhesion, and deck coating for sliding properties. Each layer performs a specific function to resolve the contradiction between corrosion protection and sliding properties.
Solution Approach 2:
Different regions of the coating system have different properties optimized for their specific functions. The galvanic zinc layer provides corrosion resistance, while the deck coating provides low friction for sliding. This local optimization allows each layer to excel at its specific task without compromising overall performance.
2Ease of manufacture
If deck coating is directly applied over protective coating, then application process is simplified, but the deck coating is absorbed by the protective coating resulting in loss of sliding properties
Solution Approach 1:
The primer acts as an intermediary layer between the protective coating and the deck coating. It prevents the deck coating from being absorbed by the protective coating while ensuring proper adhesion, thus maintaining sliding properties and requiring only a standard application process.
Solution Approach 2:
The primer is applied in advance before the deck coating to prepare the surface and prevent absorption. This preliminary action ensures that subsequent coating layers maintain their intended properties and function correctly.
3Productivity
If cold formation process is used for multi-cone anchoring elements, then manufacturing costs are reduced and production efficiency is improved, but surface roughness and microscopic damage increase leading to poor sliding properties
Solution Approach 1:
The coating process changes the surface parameters by adding smooth coating layers over the cold-formed surface. This transforms the rough cold-formed surface into a smooth functional surface that restores sliding properties while maintaining the economic benefits of cold formation.
Solution Approach 2:
The final coating system is a composite structure combining multiple materials (zinc, protective coating material, primer, deck coating material) with different properties. This composite approach allows the system to simultaneously provide corrosion protection, smooth surface for sliding, and adhesion.
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 procedure enhances corrosion protection and maintains good sliding properties, allowing for increased load-bearing capacity and improved functionality of the multi-cone anchoring elements by preventing surface roughness and steel particle retention.
Implementation Method 1
galvanic galvanizing of the cold-defined multi-kons anchoring element
Implementation Method 2
ensuring the primer prevents absorption of the deck coating by the protective layer
Data Source
Figure 1~2b
Figure 3~4d
Figure 5a~6
AI summary
The invention relates to a method for coating a cold-worked multi-cone anchoring element for chemical fastening technology. In particular, the invention relates to a method for coating a cold-worked multi-cone anchoring element, which anchoring element detaches better from the injection mortar and is characterized both by improved sliding properties and by improved increased corrosion protection.