挂舵臂铸件成形过程温度场的研究  

Research of Temperature Field of Rudder Horn Casting in Forming Process

作　　者：李莉[1] 

机构地区：[1]渤海船舶职业学院,辽宁葫芦岛125000

出　　处：《铸造技术》2013年第10期1360-1362,共3页Foundry Technology

摘　　要：为深入研究船舶上大型挂舵臂铸钢件的铸造工艺,对其成型过程的温度场及缩孔、缩松缺陷进行了分析,提出了应用结晶等温线法确定铸钢件缩孔位置、用冒口直接补注法实现缩孔补偿的方法,对铸造过程温度场的模拟实现了预测缩孔、优化工艺的目的,给出了缩孔、缩松的判定依据。模拟结果表明,铸件脊梁处和底部有孤立的液相区出现,筋板处有可能出现大面积缩孔、缩松危险区;在工艺优化中设置冷铁实现顺序凝固后铸件不再出现缩孔、缩松等缺陷。In order to further study the casting process for ship and the shrinkage cavity and shrinkage defects of the casting large-scale rudder horn steel castings, the temperature tlel（1 in forming process were analyzed. The methods of using isothermal crystallization method to determine location and using riser direct feeding method to achieve the compensation of shrinkage cavity were put forward, the judgement of shrinkage and shrinkage cavity was given, so as to realize the aim of predicting shrinkage and process optimization. The simulation results show that there are isolation liquid phase zones in the back and bottom of the casting, there may be a danger of massive shrinkage and shrinkage cavity in the stiffened plate. After the optimization process of setting cold iron to realize sequential solidification, the defects such as shrinkage cavity, shrinkage porosity in the rudder hom castings no longer exist.

关 键 词：挂舵臂铸钢件 铸型温度 CAE 缩孔 

分 类 号：U664.36[交通运输工程—船舶及航道工程] TG24[交通运输工程—船舶与海洋工程]