【正文】 high requirements against corrosion. We believe that the selection of stainless steel, the most suitable species should be selected containing chromium 18%, with 8% nickel stainless steel. All metal and air oxidation in the formation of a layer of the surface oxide film. Oxides formed in the ordinary steel will continue to be oxidized to form a rusty surface. However, due to the stainless steel containing at least 11% of chromium, so the nature of the oxide layer changed, to prevent further oxidation, and if the oxide film is accidentally removed, a new oxide film will form and continue to play a protective role. Usually used austenitic stainless steel 304 and 316, the typical chemical position is as follows: Trademark 304L 18% Cr %Ni %C 304 18% Cr % Ni %C 316L 17%Cr % Ni %C 316 17%Cr % Ni %C 304 stainless steel application history for more than 60 years. Its excellent corrosion resistance has been recognized by the people. In recent years, with the growing air pollution exposure in the outdoor 304 stainless steel surface will appear slight rust, especially with moderate or higher pollution of the city, this situation will be even more serious. In recent years, stainless steel exposed to outdoor conditions, the choice of 316 stainless steel. 316 stainless steel containing 18% chromium, nickel 12%, has joined the molybdenum element. Its corrosion resistance has been greatly improved, the outdoors, you can resist the corrosion of the atmospheric chloride. Especially in areas from the shoreline near the stainless steel fittings will be subject to the influence of salt spray corrosion resistance of 316 stainless steel will be more prominent. 304 stainless steel is generally choosing to use indoors, dry, indoor environment pollution, 304 stainless steel fully meet the requirements. In some industrial pollution from marine atmospheric effects on the outskirts of villages, you can also use 304 stainless steel. In addition, there is a rare bination of areas of poor heavy industrial pollution 河南理工大學畢業(yè)設(shè)計 外文翻譯 5 and ocean climate, 316 stainless steel will rust phenomenon. Therefore, you should use a fluorocarbon resin (PCF2) coated stainless steel to avoid rusting. Fluorocarbon resin coating has excellent weathering performance, transparency and a variety of colors, can withstand the harsh environment of the corrosion. In order to ensure good adhesion of the fluorocarbon resin, stainless steel parts surface coating resins should be by shot peening. The disadvantage of glass rib support Supporting pointsupported glass curtain wall of glass rib overe some of the shortings of traditional glass curtain wall, in recent years more and more. Traditional glass curtain wall, the height of more than 6m, has been unable to choice of tempered glass. 6m long domestic steel furnace can be up to steel glass, more than 6m in height, allglass curtain wall, and only use nontempered glass. Nontempere