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HC coating Network News: Surface coating of steel products and testing of technical standards: This standard is mainly applied to the surface coating of steel products. Where the contract documents without the extraordinary demands of its products surface coating shall comply with these Standards. One, before painting Surface Treatment All steel materials used in equipment manufacturing, paint rust before the surface treatment is required. And provides maintenance coating within the time frame Primer (Shop primer). 1, spray rust before the thick layer should eliminate rust. Remove dirt and grease. Spray or rust, the steel surface must be removed from dust debris. 2, provides for the injection of two rust surface rust grades of steel. The text described as follows: Sa2 thorough spray rust: steel surface with no visible dirt grease and oxide, rust Paint Coating and other attachments have basically removed, the residue should be firmly attached. Sa2 very thorough spray rust. Steel surface with no visible grease, dirt, Iron oxide Paint layer attachments, any residual traces should be only a little dot or stripe-like spots. 3, hand power tools for the steel surface rust, there is a rust rating requirements, the text described as follows: St3 thorough hand power tools rust. Steel surface with no visible oil dirt, and no attachment is not strong oxide, rust paint coating attachments. After the exposed part of the substrate surface rust should have metallic luster. 4, "attachments" This term may include welding slag, welding spatter compounds, soluble salts. When the oxide, rust or paint layer can be made of metal Putty Stripped from the steel surface when the blade should be seen as attachment is not strong 5, steel surfaces should be checked for visual comparison with the corresponding photos. Photos should be close to the steel surface. Assessment should be a good scattering of sunlight or artificial lighting illumination quite conditions. 6, when the film thickness and coating pretreatment options are as follows: A) film (dry film) thickness: 15 ~ 25 m. B) coating species: inorganic zinc silicate (shop) primer, epoxy primer, epoxy zinc-rich primer, zinc phosphate primer, Iron Red Such as epoxy resin primer. C) products used to complete primer paint and matching paint department or Department of varieties suited to paint primer species. Second, the technical requirements 1, before painting, rust rating requirements must meet standards before agreeing to the coating. 2, mildly corrosive environment, preparation of conventional paint brush, the surface standard Sa2 rust grade level. 3, by Chemical industry Atmospheric corrosion, seawater corrosion, high temperature oxidation, and inorganic zinc-rich coating for the primer, the surface standard Sa2 rust grade level. 4, pre-painted steel surface roughness must be controlled to control the angle of abrasive jet speed, the recycled abrasive shall not be greater than the diameter of their pills and 1.2mm. 5, jet or projectile to be coated after the surface rust by cleaning up immediately after the first layer of primer coated with an interval of time must not exceed 6h. Such as corrosion of the surface they appear, should be re-treatment, agreed to the required standard before painting. I am an expert from protective-glove.com, while we provides the quality product, such as String Knit Gloves Manufacturer , China Latex Coated Glove, Leather Work Glove,and more.
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