Influence of Chemical Composition of Zinc Bath on Iron-zinc Reaction

2026-08-17

In hot-dip galvanizing, the zinc bath contains various elements apart from the zinc matrix. These elements originate from three sources: dissolution from workpieces or self-generation in the zinc kettle, intentional additions, and inherent constituent…

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Influence of Chemical Composition of Steel on Iron-zinc Reactions

2026-08-10

## I. Basic BackgroundHot-dip galvanized structural steel contains silicon, manganese, sulfur, phosphorus, oxygen, nitrogen, hydrogen and various intentionally added alloying elements in addition to carbon. Silicon and manganese are essential deoxidiz…

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Hot-dip Galvanizing Reactions

2026-08-03

## I. Iron-zinc Phase Diagram and Various Intermetallic Compound PhasesFundamental Function of the Iron-Zinc Phase Diagram: Hot-dip galvanizing is essentially a process of mutual reaction and diffusion between iron and zinc, and the evolution of coati…

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Structure and Properties of Zinc

2026-07-27

## I. Microscopic Structures of Zinc (Three Hierarchical Structures)### 1. Atomic Structure(1) Basic parameters: Zinc is an element in Group IIB zinc subgroup of the 4th Period with an atomic number of 30 and a relative atomic mass of 65.38. Its valen…

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Process Performance Characteristics and Applications of Zinc Coatings

2026-07-20

## I. Two Major Categories of Hot-dip Galvanizing ProcessesPrinciple of Hot-Dip Galvanizing: Pretreated steel workpieces (cleaned and activated) are immersed in molten zinc liquid. Iron-zinc alloy coatings form via iron-zinc diffusion reactions. The p…

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Corrosion Resistance of Zinc Coatings

2026-07-13

## I. Electrochemical Corrosion Principle of Zinc Coatings1. Microscopic Corrosion Cause: Defects exist in the purity and uniformity of zinc coatings, forming countless micro galvanic cells in corrosive media and triggering localized electrochemical c…

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Protective Coatings for Steel Materials

2026-07-06

## I. Hot-dip Coatings1. Process Principle: Immerse steel workpieces in molten metals (zinc, aluminum, tin, lead, etc.) whose melting points are far lower than that of steel. Dissolution, diffusion and chemical reactions occur between the substrate an…

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Corrosion of Steel Materials

2026-06-29

## I. Essential Process of Metal Corrosion1. Definition: A process in which metals undergo phase transformation, form new substances and suffer damage under the action of media.2. Thermodynamic Driving Force: Energy input is required for metal smeltin…

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The Importance Of Protection For Steel Materials

2026-06-22

1. Steel has a wide range of applications yet is prone to corrosion in various media. Massive quantities of steel worldwide are lost to corrosion every year. Protective coatings can not only extend the service life of components but also endow materia…

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Galvanizing Process Flow

2026-06-17

Pre-treatmentIncoming Inspection → Degreasing → Washing → Pickling → Washing → Fluxing → DryingCore GalvanizingHot-dip Galvanizing → CoolingPost-treatmentWashing → Chromate-free Passivation → Inspection & Repair → Packing → Delivery

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