Stainless steel valve is generally not the cause of the spray paint do you know?

by:AIRWOLF     2020-05-22
Stainless steel valve is generally not the cause of the spray paint do you know? First stainless steel elbow, pipe fittings, valves, spray paint is not in order to save cost and avoid unnecessary waste of resources, if you want to spray is only in the medium, marking the pipe flow of spray. Second, is a kind of corrosion resistant stainless steel materials, so you don't have to brush paint, of course, if in a beautiful requirement, also have individual vendors will paint the surface of stainless steel valves. Content of chromium stainless steel usually is greater than 12%, its oxidation will generate a protective film, prevent the corrosion of stainless steel. In some cases, such as hydrochloric acid, chloride ion, the ocean environment, refers to the environment, the concentration is low, of course, stainless steel valves for anticorrosion measures, also need to have high concentrations of medium you will need to use lining fluorine-butterfly valves, valve alive dual phase steel valves. Again, the stainless steel material is very smooth and flat surface, even paint, may also after a long time, water paint falls off. Sometimes paint stainless steel valves and confused carbon steel valves, to some degree of inconvenience. We come to the common problem: of the stainless steel valve application of stainless steel rust: 1. Environment: the chloride ion widespread environment such as salt/HanJi soil/water/wind/etc. Because the stainless steel in the presence of chloride ions in the environment, corrosion soon, even more than ordinary low carbon steel, so the environmental requirements for the use of stainless steel. 2. Manufacturing: stainless steel in the processing of solid and liquid, some alloy elements into matrix, matrix was low alloy content, corrosion resistance is poor. 3. Installation: precipitation of carbide in the welding process, results in the decrease of its corrosion resistance. The selection of stainless steel: in the field of valves, such as stainless steel ball valve Q41F - 16 p and Q41F - 16 r, these two kinds of body materials are stainless steel, but its circulation medium and its environment by ball valve sealing surface, ball core and body material.
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