摘要
为了提高油井管用37Mn5钢连铸圆坯的内部质量,基于有限元法建立了连铸圆坯二维凝固传热数学模型,并通过实测的铸坯表面温度验证了模型的正确性,对37Mn5钢Ф210 mm圆坯的凝固过程和坯壳生长历程进行了仿真,优化了配水制度。结果表明:配水制度优化后,中心疏松、中心缩孔、中间裂纹等缺陷都有了不同程度的减轻,铸坯的质量得到了明显的改善。
To ensure good internal quality of 37Mn5 steel, a two-dimensional solidification and heat transfer mathematical＂ model was developed based on FEM. The correctness of the model was verified by testing surface temperature. The process of solidification and shell formation of 37Mn5 steel Ф210 mm round billet was simulated, and the law of secondary cooling was optimized. The results show that, after optimization, the internal quality of billet improves significantly, the defects such as center porosity, shrinkage cavity, intermediate cracks decreases obviously.
出处
《铸造技术》
CAS
北大核心
2013年第7期858-860,共3页
Foundry Technology
关键词
传热模型
二冷制度
目标温度
优化
内部缺陷
mathematical model
law of secondary cooling
target temperature
optimization
internal cracks
