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联合表面处理标准 商业级喷砂清理 Requirements for "Commercial" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)
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Corrosion is a natural phenomenon, and thus can never be completely eliminated; however, it is a misconception nothing can be done. Estimates show 25-30% of steel corrosion could be eliminated if proper corrosion protection methods were employed. Corrosion can simplistically be viewed as the tendency for the metal, after production and shaping, to revert back to its lower, more natural energy state of ore. This tendency is known as the Law of Entropy.
SSPC-VIS 2 provides a method to evaluate the degree of rusting on painted steel (or iron) surfaces. The reference color photographs and corresponding black and white images, which depict the percentage of rusting given in the written specification, form part of the standard.
This standard quantifies the degree of rusting on painted steel surfaces with a zero to ten scale base on the percentage of visible rust present on the surface. Visible rust includes rust blisters and undercutting of the coating.
The rusting depicted in the photographs is not accompanied by blistering, but the photographs show staning associated with the rust.
This guide describes the use of reference photographs depicting the appearance of unpainted, painted, rusteed, and welded hot-rolled carbon steel prior to and after power- and hand-tool cleaning.
Each color photograph provides one possible illustration of the minimum acceptable level of cleanliness.
The photographs are intended to be used to supplement the written SSPC power- and hand-tool surface preparation standards.
This guide is in three languages: English, Spanish, and Portuguese.
This guide describes the use of reference photographs depicting the appearance of unpainted rusted carbon steel and painted carbon steel, with or without rust, prior to and after cleaining by waterjetting.
This guide, which consists of actual-size color photographs, can be used to clarifty the acceptable level of flash rusting allowed prior to the application of protective coatings.
Requirements for "Brush-Off" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)
Duplex Coating systems refers to the application of a protective coating system (liquid or powder) over hot-dipped galvanized steel. These systems are often specified and are considered very robust in a wide variety of corrosive environments.
Maximizing coating system longevity reduces total ownership costs to the US Navy fleet. Coating performance is directly tied to achieving proper film thickness control across the entire project surface. A novel concept of using digital camera/filters in synergy with MIL-PRF-23236 coating technology with enhanced optical properties provides unique inspection capabilities.