65Mn板坯凝固收缩行为及其影响因素分析
Solidification and Shrinkage Behavior of 65Mn Slab and Analysis of the Influencing Factors
摘要:
针对65Mn的高温力学性能特点，本研究基于实际生产工艺条件建立了65Mn板坯连铸凝固收缩的热力耦合模型，并分析了主要连铸工艺参数对其凝固收缩行为的影响。分析结果表明：拉速对铸坯温度和热应力的影响最大，比水量影响次之，过热度影响不明显。因此，在改善连铸工艺，提高铸坯质量时，应考虑到不同工艺条件对铸坯质量的影响程度不同。
Abstract:
According to the characteristics of high-temperature mechanical properties of 65Mn, based on the actual production process conditions, a thermo-mechanical coupling model for solidification shrinkage of 65Mn slab continuous casting was established, and the influence of the three main continuous casting technology parameters on the solidification shrinkage behavior had been ana-lyzed. The results showed that, the casting speed has the greatest influence on the temperature and thermal stress of the slab, the second is the effect of cooling water, and the superheat has no obvious effect. Therefore, when the continuous casting process is improved and the quality of the slab is improved, the influence of different process conditions on the quality of the slab should be taken into account.
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