什么是渗铝板？渗铝板，全称镀铝板，也称镀铝钢板，也有人称之为热浸渗铝板。

What is aluminized plate? Aluminized plate, fully known as aluminized plate, also known as aluminized steel plate, also known as hot-dip aluminized plate.

镀铝钢板是铝硅合金镀层的钢板，其中铝含量为90%，硅10%。镀铝钢板有良好的耐热性、热反射性、耐腐蚀性，其机械性能与物理性能优于冷轧钢板。由于镀铝钢板的性能优越，已被广泛应用于我们的日常用品之中。如汽车消声器、家用电器等。钢材渗铝是通过化学和物理的方法将铝原子渗入钢材表面形成微合金层，改变钢材的表面化学成分和特性的热处理工艺。渗铝处理可以提高钢材耐氧化性能、耐腐蚀性能和硬度，作为一种简单有效的表面化学热处理工艺得到研究者的关注。

Aluminized steel plate is a steel plate coated with aluminum silicon alloy, in which the aluminum content is 90% and the silicon content is 10%. Aluminized steel plate has good heat resistance, heat reflection and corrosion resistance, and its mechanical and physical properties are better than cold-rolled steel plate. Due to the superior performance of aluminized steel plate, it has been widely used in our daily necessities. Such as automobile muffler, household appliances, etc. Aluminizing of steel is a heat treatment process in which aluminum atoms are infiltrated into the surface of steel by chemical and physical methods to form a microalloy layer and change the surface chemical composition and characteristics of steel. Aluminizing treatment can improve the oxidation resistance, corrosion resistance and hardness of steel. As a simple and effective surface chemical heat treatment process, it has attracted the attention of researchers.

热浸渗铝工艺是将工件浸入 700～800 ℃的熔融铝液中，保温3～15 min后，取出在空气中冷却，再放入600～1050 ℃环境中进行热扩散。热浸渗铝工艺流程为：工件表面预处理（包括除油、除锈）→助镀→烘干→热浸镀→热扩散渗铝→冷却→检查质量。热浸渗铝工艺的优点是设备简单，渗层综合性能优异，适于连续生产和小批量生产；缺点是能耗高，铝消耗量大，浸镀层厚度不均匀且比较难控制。热浸渗铝钢的应用受高温限制，当环境温度高于500 ℃时，热浸渗铝钢表面的纯铝会持续向基体扩散，导致表面抗氧化性能降低。

Hot dip aluminizing process is to immerse the workpiece in molten aluminum at 700 ~ 800 ℃, keep it warm for 3 ~ 15 min, take it out and cool it in air, and then put it into 600 ~ 1050 ℃ environment for thermal diffusion. The process flow of hot dip aluminizing is: workpiece surface pretreatment (including oil and rust removal) → plating aid → drying → hot dip coating → thermal diffusion aluminizing → cooling → quality inspection. The advantages of hot dip aluminizing process are simple equipment and excellent comprehensive performance of aluminizing layer, which is suitable for continuous production and small batch production; The disadvantages are high energy consumption, large aluminum consumption, uneven thickness of dip coating and difficult to control. The application of hot-dip aluminized steel is limited by high temperature. When the ambient temperature is higher than 500 ℃, the pure aluminum on the surface of hot-dip aluminized steel will continue to diffuse to the matrix, resulting in the reduction of surface oxidation resistance.