Abstract:The different annealing temperature simulation and the effects of annealing temperature on the microstructure and properties of 0.25 mm- thick hot- rolling plates are studied by using MULTIPAS annealing simulator. Based on the results of the metallographic structure and mechanical properties, it can be concluded that when the annealing temperature is low, the recrystallization of the microstructure does not occur, and when the annealing temperature increased to 620 ℃, the microstructure is fully recrystallized and completely transformed into uniform equiaxed grains. With the increase of annealing temperature, the strength decreases gradually and the elongation increases gradually. But when the temperature is higher, the structure is thicker, and the strength and plasticity decrease at the same time. The optimal annealing temperature range obtained from the annealing simulation was 660- 720 ℃, which is applied in the industrial production combined with other hot dip galvanizing process. And the microstructure, surface quality and performance of the produced thin gauge galvanized plate can meet the requirement. Thus, the process with the performance requirements of the production process of industrialization is obtained.
王滕,赵云龙,柴立涛. 退火工艺对极薄规格热镀锌钢板的影响[J]. 中国冶金, 2018, 28(1): 22-26.
WANG Teng,ZHAO Yun- long,CHAI Li- tao. Effect of annealing process on thin specification hot dipped galvanized sheet[J]. China Metallurgy, 2018, 28(1): 22-26.