Galvanizing-Resistant Coating for Carrying Means Zinc Adhesion

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Solution Overview

Problem

Conventional hot-dip galvanizing processes result in unnecessary zinc consumption and economic losses due to zinc adhesion on carrying and/or holding means, leading to high operational costs and environmental concerns, as well as quality issues and increased post-processing requirements.

Innovation Solution

A method involving a galvanization-resistant and inert coating for carrying and/or holding means, formed from silicon/oxygen compounds via temperature treatment of polysiloxane-containing starting materials, which prevents zinc adhesion during the hot-dip galvanizing process, ensuring efficient and error-free galvanization while reducing zinc usage and environmental impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If carrying and/or holding means are used to transport components during hot-dip galvanizing, then components can be efficiently handled and processed, but zinc adhesion occurs on the carrying and/or holding means resulting in unnecessary zinc consumption and economic losses

Engineering Contradiction:
Improvehandling efficiencyVSAvoidzinc consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The carrying and/or holding means are pre-coated with a zinc-repellent coating before entering the galvanizing process. This preliminary protective measure prevents zinc adhesion in advance, allowing the carrying means to be reused without zinc removal operations and eliminating unnecessary zinc consumption while maintaining handling efficiency

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

A zinc-repellent coating acts as an intermediary layer between the carrying and/or holding means and the molten zinc. This intermediate layer prevents direct contact and adhesion between the carrying means and zinc, solving the contradiction by enabling efficient handling while preventing zinc loss

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of substance

If conventional hot-dip galvanizing is performed without specialized carrying means, then zinc adhesion is minimized, but handling and processing of components becomes less efficient

Engineering Contradiction:
Improvezinc consumptionVSAvoidhandling efficiency
Core Design Contradiction:
Loss of substanceVSProductivity

Solution Approach 1:

The zinc-repellent coating serves as an intermediary that allows carrying means to be introduced into the galvanizing process without causing zinc adhesion. This resolves the contradiction by enabling efficient component handling while maintaining low zinc consumption through the mediating protective layer

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If zinc adhesion occurs on carrying and/or holding means, then operational costs increase due to necessary post-processing and zinc removal, but the galvanizing process itself is simplified

Engineering Contradiction:
Improvegalvanizing process complexityVSAvoidoperational cost
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

By pre-coating the carrying and/or holding means with zinc-repellent material before galvanizing, the invention prevents zinc adhesion in advance. This eliminates the need for post-processing zinc removal operations, reducing operational costs while maintaining simple galvanizing process complexity

Inventive Principle:
Principle #9Preliminary anti-action

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 significantly reduces zinc adhesion on carrying and/or holding means by up to 90%, leading to cost savings, improved process efficiency, and enhanced ecological compatibility, with the coated surface remaining free of defects and maintaining excellent corrosion protection and mechanical properties.

Implementation Method 1

the coating of the carrying and/or holding means is obtainable by temperature treatment of a polysiloxane-containing starting material

Methodology Applied
Scientific EffectTemperature treatment: Heat Treatment

Implementation Method 2

temperature treatment of a polysiloxane-containing starting material

Methodology Applied
Scientific EffectThermal decomposition: Pyrolysis

Implementation Method 3

the carrying and/or holding means being provided at least partially with a galvanizing-resistant and/or galvanizing-inert coating, wherein the galvanizing-resistant and/or galvanizing-inert coating has at least one silicon/oxygen compound

Methodology Applied
Scientific EffectChemical resistance:

Data Source

PatentEP3592878B1Hot-dip galvanizing method, carrying and/or holding means for the hot-dip galvanizing and method of coating the carrying and/or holding means
Publication Date: 2020.12.23 FONTAINE HLDG NV
  • EP3592878B1 patent drawingFigure 1
  • EP3592878B1 patent drawingFigure 2
  • EP3592878B1 patent drawingFigure 3~5

AI summary

The invention relates to the technical field of galvanizing of iron-based or ferrous components, in particular steel-based components or components containing steel (steel components). In particular, the invention relates to a hot-dip galvanizing method and to a coating method for coating carrying and/or holding means usable during hot-dip galvanizing and the carrying and/or holding means obtainable in said manner and to uses thereof and, furthermore, to a relevant hot-dip galvanizing system.