| 摘要 |
Provided are: a high-strength hot-dip galvanized steel plate having a steel plate containing Si and Mn as a base metal and having superior plating appearance, corrosion resistance, plating delamination resistance during high processing, and processing properties during high processing; and a method for producing same. In a heating process for annealing, the following conditions (1)-(3) are adopted: (condition 1) in the heating process for annealing, the rate of temperature rise is at least 7°C/s in the temperature region of an annealing furnace temperature of 450-A°C inclusive (where any given value is selected such that 500≤A); (condition 2) the maximum achieved temperature of the steel plate during annealing is 600-750°C inclusive; (condition 3) the transit time of the steel plate in the temperature region at which the steel plate temperature is 600-750°C inclusive during annealing is at least 30 seconds and no greater than 10 minutes, and the hydrogen concentration of the ambient is at least 20 vol%. |
