圆柱面桥梁支座消失模铸钢件缺陷预防
Preventive Measures on Defects of Steel Parts for Cylindrical Surface
李立新， 李增民， 谭建波
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作者单位：河北科技大学 材料科学与工程学院，河北 石家庄 050018
中文关键字：消失模铸造；钢支座；预防措施
英文关键字：lost foam casting(FLC)； steel bearing； preventive measure
中文摘要：YZM系列圆柱面支座是一种新型铁路桥梁钢支座，采用消失模铸造工艺生产铁路桥梁钢支座有许多优点。通过实验分析描述了各种缺陷形成机理，研究了模样材料性质、浇注温度、涂料、真空负压等主要因素对消失模铸钢件缺陷的影响，并提出了防止缺陷的一些措施。
英文摘要： YZM cylindrical surface bearing is a new kind of railway bridge cast steel bearing. Lost foam casting process has many advantages in producing railway bridge cast steel bearing. The forming mechanism of defects was described by tests and analysis, and the influence of such factors as pattern quality， pouring temperature， coating，and vacuum negative pressure on defects of lost foam cast steel was studied, so some preventive measures on defects were put forward.