Non-Reactive Coating on Brass Firearm Cleaning Holder
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Solution Overview
Problem
Firearm cleaning solvents react with brass holders, causing incorrect indication of fouling presence and making it difficult to determine when the cleaning process is complete, as the reaction leaves residue similar to fouling on cleaning patches.
Innovation Solution
A cleaning patch holding device with a non-reactive coating, such as electroless nickel plating or epoxy paint, is used to prevent chemical reactions with solvents, allowing the use of brass or other suitable materials without leaving residue on cleaning patches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If brass holders are used for cleaning patches, then the holder material is softer than steel barrel and less likely to scratch or damage the barrel bore, but the brass reacts with cleaning solvents leaving residue on cleaning patches that causes incorrect indication of fouling presence
Solution Approach 1:
A non-reactive coating layer is applied to the brass holder, serving as an intermediary barrier between the brass material and the cleaning solvent. This coating prevents direct chemical interaction while allowing the holder to maintain its mechanical properties. The coating acts as a mediator that blocks the harmful chemical reaction between copper in brass and the solvent, eliminating false residue on cleaning patches.
Solution Approach 2:
The holder becomes a composite structure combining brass core material with a non-reactive coating layer. This composite approach allows the holder to benefit from the softness and ductility of brass while the coating provides chemical inertness. The multi-material construction resolves the contradiction by assigning different functional properties to different layers of the same component.
2Reliability
If non-brass materials like plastic or aluminum are used for holders, then the material does not react with cleaning solvents, but plastic holders are weak and can break or bend, and aluminum holders oxidize rapidly and are easily deformed
Solution Approach 1:
The solution combines the mechanical strength of brass with the chemical stability of non-reactive materials through a composite structure. The brass core provides structural integrity and resistance to bending and breaking, while the non-reactive coating layer provides chemical stability and resistance to oxidation and solvent reaction. This composite approach achieves both strength and reliability simultaneously.
Solution Approach 2:
Different parts of the holder have different properties: the core material provides mechanical strength and structural integrity, while the surface coating provides chemical inertness and corrosion resistance. This local differentiation of material properties allows each layer to perform its specific function optimally, resolving the contradiction between strength and chemical stability.
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 non-reactive coating ensures that only barrel fouling residue appears on cleaning patches, accurately indicating the completion of the cleaning process and preventing false indications of fouling.
Implementation Method 1
The coating is non-reactive with solvents, preventing chemical reactions between the holder and cleaning solvent that would otherwise leave residue on cleaning patches
Implementation Method 2
A cleaning patch holding device with a non-reactive coating, such as electroless nickel plating or epoxy paint, is used to prevent chemical reactions with solvents
Data Source
AI summary
A firearm cleaning apparatus for cleaning the bore of a firearm barrel with firearm cleaning solvent. The apparatus has a cleaning patch holding device for removable attachment to a cleaning rod. The cleaning patch holding device has a body for holding a cleaning cloth containing firearm cleaning solvent. The body has a core material and a protective coating covering the core material to prevent the core material from contacting the cleaning solvent.