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非调质冷镦钢六角法兰面螺栓冷成型破裂倾向分析
引用本文:周迪,曹杰,章静,孙维,阎军.非调质冷镦钢六角法兰面螺栓冷成型破裂倾向分析[J].安徽工业大学学报,2012(1):17-20.
作者姓名:周迪  曹杰  章静  孙维  阎军
作者单位:安徽工业大学材料科学与工程学院;马鞍山钢铁股份公司技术中心
基金项目: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。

关 键 词:非凋质冷镦钢  冷镦  韧性断裂  有限元分析

Analysis on Cracking Tendency of Non-quenched Steel in Hexagon Flange Bolts Colding Forming
ZHOU Di,CAO Jie,ZHANG Jing,SUN Wei,YAN Jun.Analysis on Cracking Tendency of Non-quenched Steel in Hexagon Flange Bolts Colding Forming[J].Journal of Anhui University of Technology,2012(1):17-20.
Authors:ZHOU Di  CAO Jie  ZHANG Jing  SUN Wei  YAN Jun
Affiliation:1(1.School of Materials Science and Engineering,Anhui University of Technology,Ma’anshan 243002,China; 2.Center of Technology,Ma’anshan Iron and Steel Co.Ltd.,Ma’anshan 243000,China)
Abstract: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.
Keywords:non-quenched steel  cold heading  ductile fracture  FEM
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