Silicate-Coated Chain for Thin-Film Corrosion Resistance

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Solution Overview

Problem

Conventional rust-preventive water-based paint compositions applied to chains provide insufficient corrosion resistance and require thick film applications, leading to increased costs and reduced flexibility and fitting of chain components.

Innovation Solution

A chain made of an iron-based material with a base film containing zinc and a coating film composed of lithium silicate and sodium silicate in a specific mass ratio, which improves corrosion resistance and water resistance while maintaining a thin film thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional rust-preventive water-based paint composition is applied to chain surface, then corrosion resistance is improved, but film thickness increases and flexibility deteriorates

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidflexibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent changes the chemical composition parameters of the coating by specifying a mass ratio of lithium silicate to sodium silicate active ingredients between 0.07 and 2.5. This parameter optimization enables achieving adequate corrosion resistance with a thinner film thickness, thereby maintaining chain flexibility while improving corrosion protection.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite coating system consisting of multiple layers including a base film containing zinc and a coating film containing lithium silicate and sodium silicate. This multi-layer composite structure provides enhanced corrosion resistance at reduced film thickness compared to conventional single-layer coatings.

Inventive Principle:

Principle #40Composite materials

2Reliability

If conventional rust-preventive water-based paint composition is applied to chain surface, then corrosion resistance is improved, but labor and material costs increase

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidlabor and material costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent optimizes the mass ratio of lithium silicate to sodium silicate active ingredients to fall between 0.07 and 2.5, which enables achieving effective corrosion protection with reduced material consumption and thinner coating applications, thereby lowering both material costs and labor costs associated with application and drying.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a cost-effective coating formulation using readily available silicate materials (lithium silicate and sodium silicate) in optimized proportions, providing economical corrosion protection without requiring expensive specialized coatings or multiple thick application layers.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If conventional rust-preventive water-based paint composition is applied to chain surface, then corrosion resistance is improved, but water resistance is insufficient

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidwater resistance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent creates a composite coating film containing both lithium silicate and sodium silicate in a specific mass ratio range. This composite formulation provides synergistic effects that simultaneously enhance both corrosion resistance and water resistance, addressing the insufficiency of conventional single-component coatings.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent specifies a precise mass ratio parameter range (0.07 to 2.5) for lithium silicate to sodium silicate active ingredients, which optimizes the coating's dual performance in resisting both corrosion and water penetration, overcoming the limitations of conventional formulations.

Inventive Principle:

Principle #35Parameter changes

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 chain achieves enhanced corrosion resistance and water resistance with a favorable film-forming ability, reducing labor and material costs and maintaining the flexibility and fitting of chain components.

Implementation Method 1

The base film is formed on a surface of the chain and contains zinc

Methodology Applied

Scientific EffectGalvanic protection: Electrochemiluminescence

Implementation Method 2

The coating film is formed on the base film, and contains lithium silicate and sodium silicate

Methodology Applied

Scientific EffectSilicate coating formation: Deposition (physical)

Data Source

PatentUS20250180096A1chain

Publication Date: 2025.06.05 TSUBAKIMOTO CHAIN CO

AI summary

A chain is made of an iron-based material and includes multiple pairs of outer plates and multiple pairs of inner plates. The chain includes a base film that contains zinc and is formed on the surface of the chain, and a coating film that contains lithium silicate and sodium silicate and is formed on the base film. The mass ratio of the mass of the active ingredient of the lithium silicate to the mass of the active ingredient of the sodium silicate is in a range of 0.07 to 2.5.