基于3D打印技术的水轮机整铸转轮铸造技术  

Hydraulic turbine whole casting runner casting technology based on 3D printing technology

作　　者：马斌 李永新 李文定 李昆 李彩虹 MA Bin;LI Yongxin;LI Wending;LI Kun;LI Caihong(Kocel Steel Foundry Co.,Ltd.,Yinchuan 750021,Ningxia China)

机构地区：[1]共享铸钢有限公司,宁夏银川750021

出　　处：《中国铸造装备与技术》2024年第5期40-44,共5页China Foundry Machinery & Technology

摘　　要：整铸转轮产品工作载荷大、应力高,对铸件内在质量要求严格。因产品结构复杂、操作空间小等结构特点,造成转轮成型困难、尺寸控制难度大;同时产品具有热节多、补缩困难等缺点,在铸造过程中易产生紊流、夹渣不易上浮等问题。针对以上难点研发出一套采用3D打印砂芯的转轮整体铸造技术,通过合理的冒口和浇注系统设计,采用先进的MAGMA仿真模拟软件,分析和优化了转轮铸造工艺,解决了铸造过程补缩和夹渣问题;通过3D打印精确成型,保证转轮的尺寸精度。铸件的实际检测结果表明,各项指标均符合要求。The working load and stress of the whole casting runner products are large,and the internal quality requirements of the castings are strict.Due to the structural characteristics of the product such as complex structure and small operation space,it is difficult to form the runner and control the size.At the same time,the product has many shortcomings such as hot knots and difficult shrinkage,and is prone to turbulence in the casting process,and slag inclusion is not easy to float.In view of the above difficulties,a set of 3D printing sand core runner integral casting technology was developed,through the reasonable design of riser and gating system,and the advanced MAGMA simulation software was used to analyze and optimize the runner casting process,and solve the problems of shrinkage and slag inclusion in the casting process.Through 3D printing,the dimensional accuracy of the runner is guaranteed.The actual test results of the castings show that all the indicators meet the requirements.

关 键 词：水轮机转轮 铸造工艺 3D打印 数值模拟 

分 类 号：TG242[金属学及工艺—铸造]