| 摘要 |
<p>PURPOSE: A method for manufacturing a high strength steel plate with superior platability is provided to improve the extension strength and ductility balance of a steel plate by employing silicon. CONSTITUTION: A method for manufacturing a high strength steel plate with superior platability comprises the steps of: re-heating a slab, finish hot-rolling the re-heated steel plate at a temperature of Ar3 to Ar3+70°C, rolling the hot-rolled steel plate into a coil, pickling the surface of the steel plate, cold-rolling the pickled steel plate at the reduction rate of 50~80%, annealing the cold-rolled steel plate, cooling the annealed steel plate to 400~600°C, and galvanizing or alloying the cooled steel plate.</p> |
