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青海镀铝锌合金涂层彩钢板介绍

返回列表 来源: 发布日期: 2020.07.02

青海镀铝锌合金涂层彩钢板介绍

青海镀铝锌合金涂层彩钢板的镀层组织为Zn—Al合金,镀层成分为55%Al、43.3%Zn、1.6%Si。这种钢板因其优秀的耐蚀性正逐步取代镀锌板在世界各地广泛使用。

青海镀铝锌合金涂层彩钢板介绍_天物彩板

 青海镀铝锌合金涂层彩钢板表面光滑,具有优良的耐大气腐蚀能力,其耐大气腐蚀能力比同样镀层厚度的热镀锌板高2~6倍;同时又具有与热镀铝板相似的耐高温腐蚀性,铝锌合金镀层钢板可在高达315℃的高温下长期使用,在500℃~600℃的温度下较长期使用;具有良好的耐水、耐土壤腐蚀能力,其耐水腐蚀性优于热镀锌板和热镀铝板,耐土壤腐蚀性优于热镀锌板;具有优良的涂装性和良好的加工性能,其加工性和焊接性与热镀锌板相似,可进行冷弯、冲压等加工,并且有很好的外观。 铝锌合金镀层钢板既具有热镀锌钢板的特性,也具有热镀铝钢板的特性,因此,凡是使用热镀锌钢板的地方都可以使用铝锌合金镀层钢板,还可部分取代热镀铝钢板,其应用范围广泛,如屋面板、轻钢龙骨、暖气散热片、汽车的车身、油箱、电缆的铠装钢带、塑料大棚的骨架材、粮仓、装运容器、家用电器及器具、化工产品的包装箱及冶金行业的彩色板基板、焊管、钢窗、冷弯型钢的原料等,应用前景十分广阔。

 青海镀铝锌合金涂层彩钢板的价格比普通热镀锌板高,但由于金属铝比锌的比重小,铝锌合金镀层比重仅为3.75kg/dm3,而锌的比重为7.1kg/dm3,因此镀层重量150g/m2(双面)的铝锌合金镀层厚度与镀层重量275g/m2(双面)的热镀锌钢板的镀层厚度相等,这大大节约了价格较高的镀层金属。 超强的耐蚀性:产品的耐蚀性是一般镀锌板的6-8倍,在各种环境中保证20年不生锈; 抗高温氧化:在315摄氏度的高温环境下不发生任何变色或变形; 热反射率高:产品的热反射率高于75%,是镀锌板的2倍; 加工容易:可满足冲压、剪切、弯折等加工; 外表美观:银白色雪花图案,漂亮美观,不需涂漆可直接使用; 可表面喷涂:是油漆涂覆的良好基材,合金与有机物的复合镀层可提供更加有效的保护,可防止有机镀层下出现锈蚀。

The coating structure of Al Zn alloy coated steel plate is Zn Al alloy, and the coating composition is 55% Al, 43.3% Zn and 1.6% Si. Due to its excellent corrosion resistance, this kind of steel plate is gradually replacing the galvanized sheet and is widely used all over the world.
It has smooth surface and excellent atmospheric corrosion resistance. Its atmospheric corrosion resistance is 2-6 times higher than that of hot-dip galvanized sheet with the same coating thickness. At the same time, it has similar high-temperature corrosion resistance as hot-dip aluminum plate. Aluminum zinc alloy coated steel plate can be used for a long time at high temperature up to 315 ℃ and long-term use at 500 ℃ - 600 ℃. It has good water and soil corrosion resistance Its water corrosion resistance is better than that of hot-dip galvanized sheet and hot-dip aluminum sheet, and its soil corrosion resistance is better than that of hot-dip galvanized sheet; it has excellent coating property and good processing performance, and its processability and weldability are similar to that of hot-dip galvanized sheet, which can be processed by cold bending and stamping, and has a good appearance. Al Zn alloy coated steel sheet has the characteristics of hot-dip galvanized steel sheet and hot-dip aluminized steel sheet. Therefore, Al Zn alloy coated steel sheet can be used wherever hot-dip galvanized steel sheet is used, and it can also partially replace hot-dip aluminized steel plate. Its application range is wide, such as roof panel, light steel keel, heating radiator, car body, fuel tank, armored steel strip of cable and plastic The frame materials, granaries, shipping containers, household appliances and appliances, packing boxes of chemical products, and raw materials of color plate substrate, welded pipe, steel window and cold-formed section steel in the metallurgical industry have broad application prospects.
The price of Al Zn alloy coated steel sheet is higher than that of common hot-dip galvanized sheet. However, due to the small proportion of metal aluminum to zinc, the proportion of aluminum zinc alloy coating is only 3.75kg/dm3, while the proportion of zinc is 7.1kg/dm3. Therefore, the thickness of aluminum zinc alloy coating with 150g / m2 (double-sided) coating weight is equal to that of 275g / m2 (double-sided) hot-dip galvanized steel plate, which greatly saves the plating with higher price Layer metal. Super corrosion resistance: the corrosion resistance of the product is 6-8 times of that of the general galvanized sheet, which can ensure no rusting for 20 years in various environments; high temperature oxidation resistance: no discoloration or deformation will occur under the high temperature environment of 315 ℃; high thermal reflectance: the thermal reflectivity of the product is higher than 75%, which is twice that of the galvanized sheet; easy processing: it can meet the requirements of stamping, shearing, bending and other processing; Beautiful appearance: silver white snowflake pattern, beautiful and beautiful, can be directly used without painting; surface spraying: it is a good base material for paint coating, and the composite coating of alloy and organic matter can provide more effective protection and prevent corrosion under the organic coating.

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