基于数值模拟的机匣锻模堆焊再制造分析
|
摘要
采用Deform-3D有限元分析软件模拟了机匣锻件成形过程,研究了机匣锻模的温度及应力分布,分析了成形过程中模具出现的压塌和开裂等缺陷,提出了双金属梯度堆焊修复模具的方法。结果表明:有限元模拟结果与实际较为相符;上模最大温度与最大应力均在中间过渡圆角区,最高温度为678℃,最大等效应力为1830 MPa;模具表面及以下20 mm内的区域,应力较大,温度较高,应在此区域采用双金属堆焊的方法修复模具。
The forming process of casing forgings was simulated by using Deform-3D finite element analysis software.The temperature and stress distribution of casing forging die were studied. During the forming process, the collapse and cracking of the die were analyzed. A method for repairing the die by double metal gradient overlay welding was proposed. The results show that: the finite element simulation results are consistent with the actual results; the maximum temperature and maximum stress of the upper die are in the intermediate transition fillet region, the maximum temperature is 678 ℃, and the maximum equivalent stress is 1830 MPa; in the area of die surface and the below the surface within 20 mm, the temperature and stress of the die are higher, and in this area, the method of double metal surfacing should be used to repair the die.
The forming process of casing forgings was simulated by using Deform-3D finite element analysis software.The temperature and stress distribution of casing forging die were studied. During the forming process, the collapse and cracking of the die were analyzed. A method for repairing the die by double metal gradient overlay welding was proposed. The results show that: the finite element simulation results are consistent with the actual results; the maximum temperature and maximum stress of the upper die are in the intermediate transition fillet region, the maximum temperature is 678 ℃, and the maximum equivalent stress is 1830 MPa; in the area of die surface and the below the surface within 20 mm, the temperature and stress of the die are higher, and in this area, the method of double metal surfacing should be used to repair the die.
引文
[1]王真,单德彬,薛克敏,等.筒形机匣等温精锻时模具的加热及有限元热场分析[J].锻压技术,1996(4):45-49.
[2]李山.数字化条件下航空发动机前机匣加工工艺优化研究[D].西安:西北工业大学,2003.
[3]葛德,吴淑芳,宋永吉,等.铝合金筒形机匣等温锻造模设计[J].模具制造,2015(5):61-65.
[4]喻红梅,刘海琼,周红梅,等.模具修复再制造技术研究应用现状[J].电焊机,2014(11):150-153.
[5]邓长勇,王珣,余盈燕.基于等寿命设计的热锻模区域划分与选材[J].兵器材料科学与工程,2015(2):12-15.
[6]周杰,卢顺,权国政,等.一种基于铸钢基体的双金属层堆焊制备锻模的方法:中国,ZL200910104604.X[P].2011-01-12.
[2]李山.数字化条件下航空发动机前机匣加工工艺优化研究[D].西安:西北工业大学,2003.
[3]葛德,吴淑芳,宋永吉,等.铝合金筒形机匣等温锻造模设计[J].模具制造,2015(5):61-65.
[4]喻红梅,刘海琼,周红梅,等.模具修复再制造技术研究应用现状[J].电焊机,2014(11):150-153.
[5]邓长勇,王珣,余盈燕.基于等寿命设计的热锻模区域划分与选材[J].兵器材料科学与工程,2015(2):12-15.
[6]周杰,卢顺,权国政,等.一种基于铸钢基体的双金属层堆焊制备锻模的方法:中国,ZL200910104604.X[P].2011-01-12.