Zinc Alloy Locking Part for Galvanized Workpiece Corrosion Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for closing passage openings on metal workpieces, especially those coated with galvanizing, face challenges in achieving long-term stability and resistance to dynamic loads due to deformation and corrosion issues when using different materials and forceful insertion methods.
Innovation Solution
A zinc or zinc alloy locking part with a cylindrical design and a securing element that can be pressed into a passage opening with a galvanized cover layer, featuring a continuous pressing process to ensure a secure fit without deformation, and optionally including a head part for additional axial securing, allowing for precise adaptation to the workpiece geometry and material layers for enhanced corrosion protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different materials are used for the closing part and workpiece, then material properties can be optimized, but corrosion occurs at the interface and the plug parts are unintentionally displaced
Solution Approach 1:
The closing part is made of zinc or zinc alloy, which is the same material as the galvanizing coating on the workpiece. This homogeneity eliminates galvanic corrosion at the interface and ensures long-term stability of the connection.
2Reliability
If a force fit insertion method is used, then the closing part can be securely fixed, but deformation occurs in the workpiece area and the long-term positional fixation is adversely affected
Solution Approach 1:
The patent employs a controlled pressing process with optimized force parameters that achieve secure fixation of the closing part without exceeding the deformation threshold of the workpiece. The pressing force is carefully regulated to ensure proper seating while preserving the structural integrity of the galvanized coating.
3Manufacturing precision
If a conical design with manual hammer insertion is used, then a tight fit can be achieved, but uncontrollable forces lead to deformation and adversely affect long-term positional fixation
Solution Approach 1:
The patent replaces the manual hammer insertion method with a controlled mechanical pressing process. This substitution eliminates the uncontrollable impact forces of hammering while achieving the same tight fit through regulated, progressive pressing forces that preserve workpiece integrity.
4Reliability
If the closing part is pressed into a galvanized opening, then corrosion protection is maintained, but the connection quality is insufficient for dynamically loadable components
Solution Approach 1:
The workpiece is pre-coated with galvanizing before the closing part is inserted. This preliminary corrosion protection layer is preserved during the pressing process, ensuring that both the workpiece and the zinc closing part maintain their corrosion-resistant properties while achieving a strong, deformation-free connection.
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 solution provides a long-term stable and corrosion-protected closure that withstands dynamic loads by ensuring a precise fit and uniform pressure distribution, avoiding deformation and maintaining the integrity of the galvanized coating, suitable for dynamically loadable components.
Implementation Method 1
ensuring a precise fit and uniform pressure distribution, avoiding deformation
Implementation Method 2
a metallic workpiece, which in particular has a surface protected against corrosion by a galvanizing process
Implementation Method 3
the zinc locking part can be inserted into the opening either with a force fit or with a form fit
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In a method for corrosion-protecting the closure of a through-hole in a metallic workpiece, the through-hole is created in the workpiece before a galvanizing process. After galvanizing, a closing element covering the through-hole is inserted into the open cross-section. According to the invention, the through-hole is produced with a cross-sectional expansion adapted to the material deposited during the galvanizing process. Subsequently, a closing element made of zinc or a zinc alloy is precisely fitted into the through-hole, which has been narrowed by the galvanizing process. The closing element is formed as a substantially cylindrical body made of a zinc alloy, with a diameter that corresponds at least partially to the through-hole. This zinc closing element can be selectively inserted into the narrowed through-hole by force-fit and/or form-fit.