Factors Affecting the Thickness of Epoxy Zinc-rich Primer Coatings and Construction Tips for Engineering Projects

With the gradual improvement of the characteristics of epoxy-rich zinc primer, it has gradually become a common anti-corrosion and anti-rust surface paint product for large and medium-sized machinery and equipment. Can its value be fully utilized and the thickness of the paint layer is closely related?

What Are the Hazards to the Average Thickness of the Epoxy Zinc-rich Primer Coatings?

• Estimated service life of anti-corrosion paint;

• Surface treatment condition of the plate;

• Consideration of external corrosion level.

Below, we will introduce the thickness of different types of coating for different purposes. When doing anti-corrosion surface coating, the thickness of the coating is 60μm, while when it is used as a product workpiece anti-corrosion surface coating in the production workshop, it is strongly recommended that the thickness of the coating be 25μm. For outdoor steel frame structures and anti-corrosion and decorative engineering, it is strongly recommended that the thickness of the coating be 70-80μm.

When Constructing Epoxy-rich Zinc Primer Engineering, the Following Aspects Must Be Noted

• After the paint layer is completely dried, use a professional film thickness gauge to measure the thickness of the wet film. The design scheme allows a certain amount of error. The specified thickness of the coating is implemented according to the standard.

• During the construction, the quality management personnel and the construction unit should use the wet film coating thickness gauge to measure the thickness of the wet paint layer by sampling and inquiry by statistical analysis to ensure the uniformity of the dry paint layer and the plating layer.

• Spray a layer of epoxy-rich zinc primer on diagonal lines, corners, welds, and cuts before spraying the paint, and then spray the paint on a large scale to ensure the thickness of the coating on the raised position.

• The quality control process must be strict, and the formulated safe operating procedures and process inquiries must be timely. In addition to the standard text inquiry records, there must also be modified monitoring videos to develop the sense of responsibility of actual operators and managers to ensure strict compliance with technical specifications.

The characteristics of epoxy resin paint cannot be fully utilized without an immediate correlation with the thickness of the coating. The thickness of the coating is also affected by the surface condition of the coated material, external corrosion level, and the estimated service life of the anti-corrosion coating. It is evident that the thickness of the anti-corrosion coating has a very significant effect on the effectiveness of the entire spraying system software for anti-corrosion spraying. In order to ensure that the thickness of the coating meets relevant regulations, the aforementioned factors must be noted during construction.

Epoxy topcoat: The coating is smooth, has good resistance to organic solvents and wear resistance, and is generally used for wet, cold and natural environments in the room, as well as ship trough paint, etc.

You can see that epoxy primer and epoxy topcoat have their differences. If there is no topcoat, only paint is used, the anti-rust treatment will have poor practical effect and reduced adhesion. If only the topcoat is used without paint, there will be disadvantages such as poor anti-corrosion and decorative design effects. At this time, a good primer and topcoat matching facility can better maintain the plate.

In summary, the key to epoxy-rich zinc primer is the adhesion to the plate. If paint is used on the wall or material, the adhesion will generally be reduced by one level. Therefore, the adhesion of epoxy topcoat is better than that of epoxy primer, but compared with epoxy primer, epoxy topcoat has stronger anti-corrosion and decorative design effects.