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Zinc phosphate treatment Product List

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Reoccurrence of rust: The "cost" of forgetting pre-treatment.

Reoccurrence of rust: The "cost" of forgetting pre-treatment.

Realize before paying the price.

The recurrence of rust is the "price of forgetting the pre-treatment." There are cases where rust reappears a few months after painting. The cause lies hidden in the tiny, invisible dents on the surface. If the chemical treatment is incomplete, moisture remains in the micropores of the material. Even if coated with anti-corrosive paint, corrosion from within cannot be prevented. Many companies mistakenly believe that "it's okay because the paint film is thick." However, the anti-corrosive performance is determined by the "substrate."

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The zinc plating was compromised by "white rust."

The zinc plating was compromised by "white rust."

Explanation of the causes and countermeasures for paint peeling due to white rust and surface deterioration of galvanized steel.

One of the causes of paint peeling on galvanized materials is white rust. When white rust occurs, it becomes difficult for the paint film to adhere. Even immediately after galvanizing, reaction products are present on the surface. If zinc phosphate treatment or light polishing is not performed, the paint film is likely to lift. A storage environment with high humidity is also dangerous. Specific measures for galvanized materials are necessary. We also provide detailed examples of improvements in publicly available documents.

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The culprit was the pinhole "white rust" from the galvanized coating.

The culprit was the pinhole "white rust" from the galvanized coating.

White rust from zinc plating is the cause of pinholes. Management of storage conditions and surface treatment is essential.

Pinholes that occur in galvanized materials can sometimes be caused by gas generation due to surface reactions. Particularly when white rust is present, reactions can progress during baking, leading to gas formation inside the paint film. The zinc surface is prone to reacting with moisture, so materials that have been stored for a long time require extra caution. Additionally, insufficient zinc phosphate treatment can lead to reduced adhesion and the expansion of pinholes. As a countermeasure, it is important to combine light polishing with chemical treatment. Especially in environments with humidity over 60%, the progression of white rust accelerates, making proper storage management necessary. Detailed examples of improvements are also provided in publicly available materials.

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Defect of adhesion called chipping

Defect of adhesion called chipping

An expert at finding defects.

Chipping is caused by a 'lack of adhesion': The impact resistance is not determined solely by the strength of the coating. If the adhesion is low, the coating will rebound and peel off upon impact. Even a hard coating that appears sturdy is meaningless if its adhesion to the substrate is weak. Furthermore, there are more complex issues: insufficient pretreatment, differences in the expansion coefficients of materials, inadequate coating thickness... all of these affect chipping. A simple notion of a 'hard coating' cannot provide an essential solution.

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How to prevent pinhole defects? Improvement methods to reduce occurrence.

How to prevent pinhole defects? Improvement methods to reduce occurrence.

The effects of film thickness and drying management are tremendous.

This document explains the relationship between bubbles, film thickness, and drying conditions, which are the causes of paint pinholes, as well as countermeasures. Pinholes occur due to solvent evaporation or gas generation. The entrapment of bubbles can be caused by thick application or rapid heating. Simply raising the drying temperature may not improve the situation, so optimizing film thickness and drying conditions is crucial. Our company has published case study materials on improvements. Please take a look.

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How to prevent the recurrence of rust? Methods to enhance anti-corrosion performance.

How to prevent the recurrence of rust? Methods to enhance anti-corrosion performance.

Pre-treatment is all about corrosion prevention measures.

Improvement methods for insufficient pre-treatment, chemical treatment, and anti-corrosion measures that cause rust reoccurrence after painting. Fine dirt can be the starting point for corrosion. Pre-treatment is important because painting alone cannot prevent it. Our company has published case study materials on improvements. Please take a look.

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How to prevent the recurrence of rust? Methods to enhance anti-corrosion performance.

How to prevent the recurrence of rust? Methods to enhance anti-corrosion performance.

Thorough surface preparation determines durability.

The recurrence of rust is caused by insufficient pre-treatment. It is important to thoroughly carry out degreasing and chemical treatment for improvement. Proper selection of paint also contributes to increased durability.

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