【摘要】 针对铸件结构和使用要求,分析了厚壁铸件凝固特点及容易产生的缺陷,在总结常规工艺控制内腔气密性产生问题的基础上,进一步改进、优化了工艺措施。生产证明:对于内腔直径较小的吸具体铸铝件,正确选择浇注位置,合理运用冒口,采用整体内冷铁等工艺生产,不仅能较好解决吸具体内腔气密性问题,满足使用要求,而且操作简单,铸件清理强度较低,生产较为稳定。更多还原

【Abstract】 Aimed at the structure and operating requirements of thick-wall castings, the solidifying characteristics of the castings and common defects in casting process were analyzed. The techniques such as optimizingcasting position and casting head and adopting internal cold iron and so on were improved and optimized based on generalizing the problems of the conventional process of controlling the bore leak tightness. The results show that the problems of leak tightness of aluminum casting of abusing tool is solved and the quality can meet the production requirements.更多还原