技术知识：镀铝锌合金镀层板的介绍
天物彩板专注彩板行业16年——镀锌铝合金镀层板详细请拨打网站上方电话咨询
铝锌合金镀层钢板的镀层组织为锌铝合金，镀层成分为铝55%，锌43.3%，硅1.6%。由于其优良的耐蚀性，这种钢板正逐渐取代镀锌板，在世界各地得到广泛应用。
表面光滑，耐大气腐蚀性能好。其耐大气腐蚀性能比相同涂层厚度的热镀锌板高2～6倍。同时具有与热浸铝板相似的耐高温腐蚀性能。铝锌合金涂层钢板可在315℃以下的高温下长期使用，在500℃-600℃下可长期使用。具有良好的耐水性和耐土壤腐蚀性，耐水腐蚀性优于热浸镀锌板和热浸铝板，耐土壤腐蚀性优于热浸镀锌板；具有优良的涂层性能和良好的加工性能，其加工性能和焊接性与热浸镀锌板相似，可采用冷弯和冲压工艺，外观良好。
铝锌合金镀层钢板具有热镀锌钢板和热镀锌铝钢板的特点。因此，凡使用热镀锌钢板的地方都可以使用铝锌合金涂层钢板，也可以部分替代热镀锌钢板。其应用范围广泛，如屋面板、轻钢龙骨、暖气片、车体、油箱、电缆铠装钢带、塑料框架材料、粮仓、集装箱、家用电器、化工产品包装箱、彩钢板基材、焊管、钢窗、玻璃钢等原材料冷弯型钢在冶金行业有着广阔的应用前景。
铝锌合金镀层钢板的价格高于普通热镀锌板。但由于金属铝锌比例较小，铝锌合金镀层的比例仅为3.75kg/dm3，而锌的比例为7.1kg/dm3。因此，镀层重量为150g/m2（双面）的铝锌合金镀层厚度相当于275g/m2（双面）热镀锌钢板的厚度，从而大大节省了价格较高的层金属镀层。
超强耐腐蚀性：产品的耐腐蚀性是普通镀锌板的6-8倍，在各种环境下可保证20年不生锈；
耐高温氧化：315℃不变色、不变形；
高热反射率：产品热反射率大于75%，是镀锌板的两倍；
加工方便：可满足冲压、剪切、弯曲等加工要求；
外观美观：银白雪花图案，美观大方，无需粉刷即可直接使用；
表面喷涂：是一种良好的涂料基材。合金与有机物复合涂层能在有机涂层下提供更有效的保护和防腐蚀。
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 20 years of no rust in various environments;
High temperature oxidation resistance: no discoloration or deformation occurs at 315 ℃;
High thermal reflectance: the thermal reflectance of the product is higher than 75%, which
is twice of that of galvanized sheet;
Easy processing: it can meet the requirements of stamping, shearing, bending and other processing;
Beautiful ppearance: silver white snowflake pattern, beautiful and beautiful, can be directly used without
painting;
Surface spraying: it is a good base material for paint coating. The composite coating of alloy and organic matter can provide more effective protection and prevent corrosion under the organic coating.
