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在薄带连续等近净形状连铸法中,获得稳定的表面质量是个重要课题。其中必须了解铸带表面初期凝固组织的形成过程,并加以控制。为此,东京大学工学部的水上英夫等,用光传感器测量了 18Cr-8Ni不锈钢初期凝固时的试样表面温度,探讨了凝固条件与初期凝固(显微)组织的关系。为了更详细的弄清试样内部的凝固条件,利用18Cr-8Ni不锈钢快速凝固时测得的试样表面的冷却曲线进行了简单模型的凝固分析。通过分析,推测了冷却板一试样之间的界面热传导系数,同时算出了试样内部的凝固条件,研究了与初期凝固组织的关系。结论如下:
In the near continuous net shape continuous casting method, obtaining a stable surface quality is an important issue. Which must be aware of the casting surface of the initial solidification of the formation of the organization, and to be controlled. To this end, Tokyo Institute of Technology, Hideki and other water, the sensor used 18Cr-8Ni stainless steel initial solidification of the sample surface temperature to explore the solidification conditions and initial solidification (microstructure) relationship. In order to clarify the solidification conditions inside the sample in detail, the simple model solidification analysis was carried out by using the cooling curve on the surface of the sample measured by rapid solidification of 18Cr-8Ni stainless steel. Through the analysis, the interfacial thermal conductivity coefficient of a specimen in the cooling plate was deduced, and the solidification conditions inside the sample were calculated. The relationship with the initial solidified structure was also studied. conclusion as below: