A production method of iron-zinc alloy coated steel plate with yield strength ≥ 220mpa
A technology of alloy coating and yield strength, which is applied in metal material coating process, coating, hot-dip coating process, etc., can solve the problem of limited improvement in the compactness of the coating structure, and achieve fully refined grains, uniform size distribution, fine grain effect
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[0020] The present invention will be described in detail below:
[0021] Table 1 is a list of main process parameters of each embodiment and comparative example of the present invention;
[0022] Table 2 is a list of performance test results of various embodiments and comparative examples of the present invention.
[0023] Each embodiment of the present invention is produced according to the following steps:
[0024] 1) Desulfurization of molten iron, converter smelting and continuous casting into billets;
[0025] 2) Carry out hot rolling, and control the rough rolling temperature at 1020~1060℃, and control the finish rolling temperature at 860~890℃; 3) Carry out coiling, control the coiling temperature at 650~700℃;
[0026] 4) Cold rolling and rolling to the required thickness;
[0027] 5) Carry out continuous hot-dip galvanizing, and control the unit speed at 100~130m / min, and the zinc liquid temperature at 457~463℃;
[0028] 6) Perform rapid cooling after galvanizing: adopt aerosol coo...
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