非调质冷镦钢六角法兰面螺栓冷成型破裂倾向分析  

Analysis on Cracking Tendency of Non-quenched Steel in Hexagon Flange Bolts Colding Forming

作　　者：周迪[1] 曹杰[1] 章静[1] 孙维[2] 阎军[1] 

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]马鞍山钢铁股份公司技术中心,安徽马鞍山243000

出　　处：《安徽工业大学学报（自然科学版）》2012年第1期17-20,共4页Journal of Anhui University of Technology（Natural Science）

基　　金：科技部支撑计划项目(2007DAE30B04)

摘　　要：冷镦制品的表面开裂是造成冷镦件产品缺陷、影响制品成品率的主要问题。针对冷镦开裂问题,以冷顶镦实验为基础,通过有限元分析获取冷顶镦历史变形数据,计算出10.9级非调质冷镦钢(MFT10)的临界损伤值和材料参数,并将该值运用于冷镦六角法兰面螺栓破裂倾向的预测。结果表明,用MFT10制造六角法兰面螺栓开裂几率较小,结果与实际情况吻合。Surface cracking of cold heading products is the main problem,which causes cold heading defect and affects the product yield. For cold heading cracking, based on the cold upsetting test, the history deformation data were gotten by FEA, the critical damage value and material parameters of MFT10 were calculated, which was used to forecast the cracking tendency of Hexagon flange bolts.The results show the cracking tendency of Hexagon flange bolts manufactured with MFT10 is low, it is coincide with the actual situation.

关 键 词：非调质冷镦钢 冷镦 韧性断裂 有限元分析 

分 类 号：TG316[金属学及工艺—金属压力加工]