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运用传统方法完成了对铸钢件JH-14回柱绞车蜗轮箱座的铸造工艺设计。根据蜗轮箱座较为复杂的结构特点,同时设计两个内浇道对铸件进行浇注,在铸件顶部设计两个明冒口,在其侧面设计冷铁,以确保铸件的顺序凝固。建立铸件的三维实体模型,运用ViewCast铸造模拟软件对铸钢件蜗轮箱座的凝固过程进行了模拟计算。模拟结果表明,在铸件的厚大处和壁与壁的交接处产生了缩孔、缩松缺陷。根据数值模拟结果并结合理论分析,通过加大冒口颈与冷铁的尺寸和增设冒口方法,对铸造工艺进行优化。最终模拟结果显示,优化工艺能将缺陷转移到冒口中,实现了顺序凝固,从而最大程度地消除了铸造缺陷,获得了合理的铸造工艺方案。
Using traditional methods to complete the casting of steel castings JH-14 column winch worm gear box casting process design. According to the more complicated structure of the worm gear box seat, two runners are designed to cast the castings, two clear risers are designed on the top of the castings, and chilled iron is designed on the side to ensure the order of solidification of the castings. The three-dimensional solid model of the casting is established. The simulation process of the solidification process of the steel casting is carried out by using ViewCast casting simulation software. The simulation results show that shrinkage holes and shrinkage defects are produced in the thick parts of castings and the junction of the wall and the wall. According to the numerical simulation results and the theoretical analysis, the casting process is optimized by increasing the size of the riser neck and the chilled iron and adding risers. The final simulation results show that the optimization process can transfer the defects to the riser and achieve the order of solidification, thus eliminating the casting defects to the maximum extent and obtaining a reasonable casting process scheme.