根据镀锌工艺的不同,热镀锌槽钢可分为热浸锌槽钢和热吹镀锌槽钢,将除锈后的钢件浸入到440~460℃左右熔融的锌液中, 使钢构件表面附着上锌层,进而起到防腐蚀作用。通常情况下,锌层表面形成一层非常薄且致密的氧化锌层,它很难溶于水, 因而对槽钢有一定的保护作用。热镀锌槽钢主要用于建筑(如:玻璃幕墙、电力铁塔、通信电网、水及煤气输送、电线套管、 脚手架、房屋等)、桥梁、运输;工业(如化工设备、石油加工、海洋勘探、金属结构、电力输送、造船等); 农业(如:喷灌、暧房)、等方面,近几年已大量地被采用。由于热镀锌制品具有外表美观、耐腐蚀性能好等特点, 其应用范围越来越广泛。通过喷铝涂层加防腐蚀涂料进行封闭,可以大大延长涂层的使用寿命,结合理论与实际应用的效果来看, 喷铝或喷锌涂层是较理想的防腐蚀底层。喷铝层与钢铁基体结合强度高,涂层寿命长,具有较好的长期经济效益;喷涂工艺灵活便捷, 适用于长效保护大型且难以维护的钢结构,可现场施工。 According to the different galvanizing process, hot galvanized tank steel can be divided into hot dip zinc tank steel and hot blow galvanized tank steel, the rust removal steel parts into about 440~460℃ molten zinc liquid, so that the surface of the steel members attached to the zinc layer, and then play an anti-corrosion effect.Usually, the zinc layer surface forms a very thin and dense zinc oxide layer, which is difficult to dissolve in water, so it has a certain protective effect on the tank steel.Hot-dip galvanized tank steel is mainly used for construction (such as glass curtain wall, power tower, communication grid, water and gas transmission, wire casing, scaffolding, houses, etc.), bridge, transportation; industry (such as chemical equipment, petroleum processing, Marine exploration, metal structure, power transmission, shipbuilding, etc.); agriculture (e. g.: sprinkler irrigation, heating room), etc., has been widely adopted in recent years. Because the hot-dip galvanized products have beautiful appearance and good corrosion resistance, their application scope is more and more extensive. Closing by aluminum spraying coating and anti-corrosion protection coating can greatly extend the service life of the coating. Combined with the effect of theory and practical application, aluminum spraying or zinc spray coating is the ideal anti-corrosion layer. Aluminum spray layer and steel matrix have high binding strength and long coating life, with good long-term economic benefits; spraying process is flexible and convenient, suitable for long-term protection of large and difficult to maintain steel structure, can be constructed on site.
q235B镀锌槽钢
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小规格热轧u型槽钢
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