A kind of hot-dip galvanized high-strength steel with excellent fe-al alloy layer characteristics and its manufacturing method
A manufacturing method and hot-dip galvanizing technology, which are applied in the plating of superimposed layers, hot-dip plating process, metal material coating process, etc., can solve the problems of unevenness, lack of Fe-Al alloy layer, discontinuity, etc. Increase the content, improve the effective contact, and facilitate the formation of the effect
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[0034] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0035] Table 1 is the composition of the hot-dip galvanized steel sheet according to the present invention. Table 2 shows the annealing process of the hot-dip galvanized steel sheet according to the present invention, and the properties of the hot-dip galvanized steel sheet.
[0036] figure 1 It is a scanning electron microscope image of the surface of the Fe-Al alloy layer at the leakage plating defect of the hot-dip galvanized direct annealing without pre-plating Fe treatment in Comparative Example 1. Depend on figure 1 It can be seen that the Fe-Al alloy layer is discontinuous and missing in a large area.
[0037] figure 2It is the appearance of the galvanized sheet after pre-plating Fe treatment in Example 2. Compared with the part without pre-plating Fe treatment, it can be found that the surface quality of hot-dip galvanizing after Fe coating i...
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