铁型覆砂球铁曲轴浇注系统设计.pdfVIP

学兔兔 铁型覆砂球铁曲轴浇注系统设计 张贤虎，崔卫东，史传岳，张晓荣，董 琪 (江苏万力机械股份有限公司铸造工艺研究所，江苏 海安 22661 1) 摘要：根据铁型覆砂铸造Z-艺铸型刚度高、冷却速度快的特点，确定了球铁曲轴浇注系统的设 计原则，分析了单缸曲轴、双缸曲轴和四缸曲轴的浇注系统方案。指出设计浇注系统时，应针 对铸件可能产生的缺陷、生产条件和产量、技术要求及铸造成本等选择浇注系统的形式，避免 浇注系统过长，确保铁水快速充型，使内浇道在浇注结束时能及时凝固封闭，利用石墨化膨胀 实现自补缩。 关键词：球铁曲轴；铁型覆砂；浇注系统 ． 中图分类号：TG244 ．4 文献标识码：B 文章编号：1673-3320(2013)05—0027—03 Design of Gating System for Ductile Iron Crankshaft in MetaI Mold with Sand Liner Process Zhang Xianhu，Cui Weidong，Shi Chuanyue，Zhang Xiaorong，Dong Qi (Casting Technology Research Institute，Jiangsu Wanli Machinery Co．，Ltd Hai’an 22661 1，Jiangsu，China) Abstract：According to the characteristic of higher rigidity and quicker cooling for metal mold with sand liner process，the design principles of gating system for ductile iron crankshafts were determined． The gating system solutions of crankshafts for single，double and four-cylinder were analyzed．It’S pointed out that the form of gating system is selected by casting defects，production conditions，technical requirements and casting cost in design，in which too long gating system is avoided to ensure molten iron rapid filling and ingate timely solidilying at the end of pouring．Thus the self-feeding is realized by graphitization expansion． Key words：ductile iron crankshaft；metal mold with sand liner；gating system 铁型覆砂工艺具有铁型刚性好、冷却速度 的设计原则，抛砖引玉，供同行参考。 快，铸件组织致密、尺寸精度高、加工余量小、 1 浇注系统设计原则 缺陷少，耗砂少、生产效率高等一系列砂型铸造 铁型覆砂铸造工艺由于铸型刚度高，凝固过 无法比拟的优点，近年来采用铁型覆砂工艺生 程中的