Galvalized aluminum magnesium steel plate and manufacture method thereof
A manufacturing method and hot-dip galvanizing technology, applied in hot-dip plating process, coating, metal material coating process, etc., can solve problems such as large scum, reduce energy consumption, reduce equipment loss, and good adhesion ability and welding performance
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[0031] Manufacture the hot-dip galvanized aluminum-magnesium steel sheet of the present invention according to the following steps, the steel sheet includes a substrate and a coating coated on the substrate, and the substrate adopts a common IF steel with a thickness of 0.7mm:
[0032] (1) Manufacture substrate:
[0033] (2) Degrease and clean the surface of the substrate;
[0034] (3) The heating rate is 15°C / s, the continuous annealing temperature is 780°C, and the reducing atmosphere is 10vol%H 2 +N 2 , the dew point is -30℃, and the reduction time is 60s;
[0035] (4) Before immersion plating, keep warm at a temperature 10°C higher than the plating solution for 10s to make the temperature of the substrate uniform. , the immersion plating time is 3-10s, wherein, the composition ratio of each chemical element in the plating solution is shown in Table 1, and the plating solution temperature and immersion plating time are shown in Table 2;
[0036] (5) Control the cooling ...
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