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运用常规的铸造工艺设计方法对铸钢件横梁的铸造工艺进行初步的设计,利用View Cast软件对初始工艺的凝固过程进行了数值模拟,分析原始工艺产生缺陷的部位和原因。在此基础上,通过改进冒口、冷铁等铸造工艺参数,优化了铸造工艺,并对优化后的工艺再次进行模拟。结果显示,优化后的工艺能够平稳而有序的充型,实现了顺序凝固,可以较大程度地减少缩孔、缩松等铸造缺陷。根据该工艺方案进行实际浇注,铸件品质大幅提高,其内部组织及力学性能均达到或高于技术要求。
The casting process design of the cast steel was preliminarily designed by using the conventional casting process design method. The initial solidification process of the process was simulated by View Cast software to analyze the parts and causes of the defects caused by the original process. On this basis, by improving the casting process parameters such as riser and chill iron, the casting process is optimized, and the optimized process is simulated again. The results show that the optimized process can be smooth and orderly filling, to achieve the order of solidification, can reduce the shrinkage, shrinkage and other casting defects. According to the process of actual casting, casting quality greatly improved, its internal organization and mechanical properties have reached or exceeded the technical requirements.