文档介绍：挂舵臂铸造成形过程的计算机模拟
摘要
介绍了铸造过程数值模拟技术的一些基本的原理和应用。采用华铸CAE软件对大型铸钢件挂舵臂的铸造成形过程温度场进行模拟。选用了Solidworks三维造型软件生成铸件以及冒口、浇注系统、冒口套、冷铁等工艺参数的三维实体模型,并导出STL格式文件作为接口文件,然后用华铸软件进行模拟计算处理。模拟结果作为改良挂舵臂铸造工艺的依据,在挂舵臂肋板热节处设置冷铁来提高凝固速度,在冒口上加设保温冒口套来提高冒口的金属液补缩能力。通过对凝固过程温度场的模拟分析,优化了原始工艺。利用计算机模拟技术,判断铸造工艺的合理性,辅助完成工艺优化的方法,能够彻底克服传统工艺设计方法的缺点,提高设计质量,缩短试制周期,降低生产成本。
将模拟优化后的工艺用于中信重机公司铸锻厂的实际生产中,结果表明:通过合理设置冒口、冷铁的位置和大小,合理选择浇注系统及分型面,可以控制冶炼和热处理工艺,保证铸件符合顺序凝固的原则,生产出组织致密、性能优良、各项指标达到用户要求的优质挂舵臂铸件。
关键字:挂舵臂,华铸CAE,缩孔,工艺优化
Computer Simulation for Casting Process of Rudder Arm
ABSTRACT
This article has introduced the principles and applications of numerical simulation of casting process. HUA ZHU CAE been used to imitate the temperature field in the casting process of the large rudder arm.. In this experiment, Solidworks, a three-dimensional modeling software, has been used to create the three-dimensional entity model of casting and riser, pour system, riser set, cold iron, etc and lead out files whose forms are STL as the interface files. And then Intecast has been used to imitate puting. The simulation result is used as the basic of improving the casting technology of the rudder horn. In order to enhance the speed of solidification, cold irons are set up in the rib hot spot of rudder arm. And to improve the pensation capacity of molten metal of the riser head, the insulating riser sleeve has been set up. Through the simulation analysis the original technology has been optimized. Utilizing puter modeling technique to judge the rationality of casting technology and to assist the optimization of casting technology can e the ing of the traditional method on craft pletely. That can improve design quality and shorten production cycle as well as reduce the production cost.
CITIC heavy machinery CO. adopted the optimized technology in the actual production. The results shows that cast of rudder arm pact texture, high quality and satisfying parameters can be produced by properly setting the position and size of riser and cold