A kind of galvanized dual-phase steel for 450mpa class car and production method
A dual-phase steel and car technology, applied in the hot-dip galvanizing process, coating, metal material coating process, etc., can solve the problems that are not suitable for the production of high-surface-quality galvanized dual-phase steel, and achieve color without defects, which can be Good plating performance and uniform color effect
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[0038] The present invention is described in detail below:
[0039] Table 1 is the component value list of each embodiment of the present invention and comparative example;
[0040] Table 2 is the value list of the main process parameters of each embodiment of the present invention and comparative examples;
[0041] Table 3 is a list of performance testing conditions of each embodiment of the present invention and comparative examples.
[0042] Each embodiment of the present invention is produced according to the following steps:
[0043] 1) After the slab is smelted, refined and continuously cast according to the set composition, the slab is heated, and the heating temperature is controlled at 1190~1250°C;
[0044] 2) Carry out finish rolling, and control the final rolling temperature at 890-920°C;
[0045] 3) Coiling: the coiling temperature is controlled at 580-620°C;
[0046] 4) Cold rolling after pickling: the pickling temperature is controlled at 70-90°C, the acid va...
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