【摘要】 采用配有电子计算机的热像仪,对钢锭模使用过程中不稳定的温度分布进行了连续测定,模上的温度和热应力参数λ(该处热应力与抗拉强度之比)极不均匀,模子表面中心最高温度达752.5℃。浇注后10min,模角附近λ有最大值。浇注后90～110min,λ的峰值在模中心部分。对模子上热状况和热应力的分析,为改进模型设计和合理地使用钢锭模提供了科学依据。模型设计计算和图形绘制由电子计算机迅速地完成,为优化模子的设计开辟了新途径。更多还原

【Abstract】 The unsteady temperature distribution of ingot mould during use has been continuously measured by Thermo-Tracer Detector with computer. The distributions of temperature and thermal stress parameter λ(ratio of thermal stress to tensile stength) of the mould are not very uniform. Maximum outer surface temperture of the mould reaches 752.5℃. There is a maximumλin vicinity of the mould corner at 10 min after teeming. λ in the center of the mould has a peak value during 90-110 min after teeming. The analysis of thermal state and thermal stress of the mould provides scientific basis to improve its design and use. The design calculation and profile drawing of the mould can be completed quickly with the aid of computer. Therefore, it provides a way to get an optimum mould design.更多还原