Help needed with selecting paint for equipment; a beginner seeking advice. . .
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Drawing requirements: 2 coats of anti-corrosion paint, 2 coats of rust preventive paint, and 2 coats of topcoat. The standard SH/T3022 was specified; the design temperature is 150/40, the operating temperature is 55, and no insulation is required. How to choose according to the standards? Previous projects had specifications, but this one doesn’t. Help!
Enameled glaze is good; it’s also known as enamel glaze.
It seems to be just a regular primer, intermediate coat, and topcoat (no special requirements regarding the paint). You can use phrases from previous projects and fill in your own requirements. This standard also provides options for primer, topcoat, and intermediate coat. I don’t know about the rest
I usually use an inorganic zinc-rich primer, a ferrochrome anti-rust intermediate coat, and a polyurethane topcoat; it’s sufficient to choose them according to the standards, with each coating layer having a thickness of no less than 50 microns
How can anti-rust paint be used as an intermediate coat? I don’t know much about paint.
Epoxy zinc-rich primer already has an anti-rust effect
After rust removal, one coat of epoxy zinc-rich primer, one coat of epoxy ferrochrome intermediate coat, and one coat of aliphatic polyurethane topcoat are applied. The color of the topcoat can be chosen arbitrarily; the minimum dry film thickness of the coating as well as the minimum total dry film thickness must comply with the \"Design Code for Corrosion Protection Coatings on Petrochemical Equipment and Pipelines\"
Is there something wrong with these drawing requirements? Inorganic zinc-rich primer is the primer in heavy-duty anti-corrosion systems; it possesses both physical rust prevention and electrochemical anti-corrosion properties, making it the preferred primer for such systems. Is it unnecessary to use anti-rust paint as well?
And I heard from the workshop workers that I need to know what kind of reaction will occur if rust-proof paint is applied alongside other types of paint! Generally, anti-rust paint is applied separately.
Sure! It is specified in the regulations
I don’t see it, SH/T3022?