圆铝杆铸坯裂纹形成机理及影响因素探究

Analysis on Formation Mechanism and Influence Factors of Casting Crack in Round Aluminum Slab

通过对铸造凝固过程的跟踪试验、铸造组织分析,并结合生产实践长期总结,分析了纯铝系圆铝杆铸坯不同位置铸造裂纹的性质、形成机理及主要的影响因素。通过工艺改进和新技术开发后的铸坯晶粒为细小的等轴晶,热裂纹得到明显改善。

Based on the tracing test of solidification process and the organizational analysis on castings, and combining long-term production practice, the character, formation mechanism and main factors of casting crack formed in different parts of the aluminum slab were analyzed.