| 摘要 |
Provided are a high-strength, molten galvanized steel sheet having as the base material a steel sheet containing Si and Mn, and having exceptional plated appearance, corrosion resistance, resistance to plating peeling when highly worked, and workability when highly worked; and a method for the production thereof. (Condition 1) to (condition 3) below are adopted in the heating process during annealing. (Condition 1) In the heating process during annealing, within a temperature zone in which the annealing furnace internal temperature is 450 to A°C (where A is any value selected from 500 ≦ A), the rate of temperature increase is 7°C/s or faster. (Condition 2): The maximum temperature reached by the steel sheet during annealing is at least 600 to 750°C. (Condition 3) The steel plate passage time through a temperature zone in which the steel sheet temperature during annealing is 600 to 750°C is at least 30 seconds to 10 minutes, and the dew point of the atmosphere is -10°C or above. |
