大型高铬耐磨泵体的铸造工艺研究及实践  

Research and Practice on Casting Technology of Large High Chromium Wear-Resistant Pump Casing

作　　者：吴延青 WU Yan-qing(Shijazhuang Industrial Pump Factory Co.,Lud,Shijazhuang Hebei 050100,China)

机构地区：[1]石家庄工业泵厂有限公司,河北石家庄050100

出　　处：《铸造设备与工艺》2024年第3期1-3,7,共4页Foundry Equipment & Technology

摘　　要：卧式离心泵泵体零件结构呈螺旋形,壁厚不均匀。泵体材质为高铬铸铁Cr26,具有良好力学性能和抗磨性能。高铬铸铁结晶温度范围宽,铸造性能差,导致铸件易出现缩松缺陷。铸造工艺设计过程中采用了模数理论设计方法,应用CASTsoft铸造数值模拟软件进行了凝固过程模拟,预测了铸件凝固过程中可能出现的缩孔、缩松缺陷,并优化了铸造工艺方案,保证了铸件质量,实现了大型高铬耐磨泵体的批量生产。The pump body parts of horizontal centrifugal pump are spiral shaped and have uneven wall thickness.It is made of high chromium cast iron Cr26,which has good mechanical properties and anti-wear properties.High chromium cast iron is prone to shrinkage defects due to its wide erystallization temperature range and poor casting performance.In the casting process design,the modular design method was adopted,and the solidification process was simulated by CASTsoft casting numerical simulation software.The possible shrinkage holes and porosity defects were predicted during the casting process,and the casting process was optimized to ensure the cast-ing quality and realize the mass production of large high chromium wear resistant pump body.

关 键 词：泵体 高铬铸铁 铸造工艺 数值模拟 

分 类 号：TG245[金属学及工艺—铸造]