机械科学与技术2017，Vol.36Issue(9)：1357-1361,5.DOI:10.13433/j.cnki.1003-8728.2017.0908
柴油机主轴承孔胀断工艺试验与模拟研究
Simulation and Technological Experiment of Main Bearing Hole Splitting for Diesel Engine
摘要
Abstract
On diesel engine main bearing hole roundness,the displacement of main bearing hole via original model and splitting model are simulated when it is assembled,at 150 ℃ and under explosion pressure.The stress difference around the main bearing hole is analyzed.With contrast test analysis,RuT450 materials and HT250 materials were used respectively to create specimen.With the comparison method,the influence of the material quality,the splitting surface quality and the change of main bearing hole precision on the fracture splitting technology of the main bearing hole among the Ru450,the HT250 specimen and the German company MAN D26 alloy material was studied.The results show that Ru450 can meet the performance requirements of hardness and strength for the diesel engine,and it is suitable for the use of splitting technology.The splitting surface of Ru450 specimen is very smooth and the material organization is very compact.The change in all main bearing hole detected in specimens does not exceed the setting value of 0.1 mm.It shows that the precision of the expanding hole after splitting is very high.关键词
柴油机/主轴承孔/胀断/铸铁/有限元Key words
diesel engine/main bearing hole/splitting/cast iron/finite element分类
能源科技引用本文复制引用
张朝烛,董非,张奇,倪捷..柴油机主轴承孔胀断工艺试验与模拟研究[J].机械科学与技术,2017,36(9):1357-1361,5.基金项目
江苏高校优势学科建设工程项目(PAPD)资助 （PAPD）
