镀锌卷板性能指标都有什么要求？

1、 机械性能指标
首先是 热镀锌产品的机械性能。力学性能可以定义为通过拉伸试验确定的产品性能，如屈服强度、抗拉强度、伸长率、n值、R值等。

1、 Mechanical performance index

The first is the mechanical properties of hot dip galvanized products. Mechanical properties can be defined as product properties that can be confirmed by tensile test, such as yield strength, tensile strength, elongation, n value, R value, etc.
2、 Coating performance index
The most important performance of hot dip galvanized products is the coating performance, mainly refers to the corrosion resistance and adhesion of the coating. Corrosion resistance includes salt spray resistance and moisture resistance. Coating adhesion refers to the resistance of products to cracking, peeling and pulverization of coating during processing.
3、 Other performance indicators
None of the tests can be very consistent with the actual situation. Other important properties are surface quality, such as the surface quality of automobile and household appliances. For the automotive industry, the surface roughness control of steel plate is also very important. For the definition of surface quality, a few words can not completely explain. The best thing is not to use it directly in different use processes, but to verify it first. In addition, there are also some explanations, such as for the alloy products or ordinary hot-dip galvanized products, there are trimming and uncut edges. The edge of uncut strip steel is allowed to have tiny zinc layer cracks and white edges.