摘要
以某轿车1.3L三缸曲轴为例,介绍了在水平湿型砂线上生产的球墨铸铁三缸曲轴铸件渣孔、砂孔质量的改善情况.根据大孔出流理论,对浇注系统流量进行了重新计算设计,且利用MAGMA模拟软件,合理优化了浇注系统的截面积、位置和分段阻流工艺.结果 显示,有渣孔、砂孔缺陷的曲轴比例下降到0.5%以下.
Taking 1.3L three-cylinder crankshaft of car as an example, the improvement in quality of slag hole and sand hole of three-cylinder crankshaft machined in a horizontal line and green sand process was introduced. In order to improve quality of slag hole and sand hole machined, gating system for the three-cylinder crankshaft was redesigned and recalculated according to the large orifice discharge theory, and cross-sectional area, location and segmentation choked flow of the gating system were reasonably designed by the use of MAGMA simulation software. As a result, percentage of the crankshafts having defective slag hole and sand hole was reduced to below 0.5%.
作者
刘金林
LIU Jinlin(Shanghai Sandm ann Foundry Co.,Ltd.,Shanghai 201805,China)
出处
《铸造工程》
2019年第4期39-43,共5页
Foundry Engineering
关键词
三缸曲轴
湿型砂工艺
渣孔和砂孔
改善
three cylinder crankshaft
green sand molding process
slag hole and sand hole
improvement
