350MPa级高强度镀锌钢板的退火工艺研究  

Study on 350MPa High Strength Hotdip Galvanized Sheet Steel

作　　者：姜成林[1] 张洪涛[1] 惠兴伟[1] 

机构地区：[1]鞍山钢铁集团公司科技质量部,辽宁鞍山114021

出　　处：《轧钢》2008年第4期21-24,共4页Steel Rolling

摘　　要：利用Gleeble-3800热模拟试验机研究了350MPa级高强度热镀锌钢板的连续退火工艺对其组织和性能的影响,得出Ti元素的加入可提高高强度热镀锌钢板的再结晶温度,冷轧压下率会影响Ti的碳氮化物的大小及其分布,带钢屈服强度、抗拉强度随连续退火温度的升高而下降,伸长率随退火温度的上升而增加。最后选择了温度为720-760℃的退火工艺进行工业生产,钢板性能达到：屈服强度ReL≥417.6MPa,抗拉强度Rm≥526.9MPa,伸长率A50≥24.5%。The influence of annealing technology on microstructure and mechanical properties of 350MPa hot-dip galvanized sheet steel was studied by Gleeble 3800 thermal simulation test machine. The results show that the yield strength and tensile strength of strip are decreased with the annealing temperature increasing, but elongation is increased. Therefore, the annealing temperature is assured at 720-760℃, and the mechanical prop erties of strip are RrL ≥ 417. 6MPa,Rm≥ 526.9MPa,A50 ≥ 24.5%.

关 键 词：高强度热镀锌钢板 连续退火 组织 性能 

分 类 号：TG161[金属学及工艺—热处理]