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为了研究铸钢冷却壁的高温工作性能,通过热态实验测试了铸钢冷却壁温度场分布,并首次在铸钢冷却壁上安装了应变片,对其冷面的应变分布进行了研究.在炉温1100℃无渣皮条件下,铸钢冷却壁热面最高温度在600℃左右,低于铸钢相变温度;冷面中心线部位应变在-5×10-4左右,四周平均应变在-3×10-4左右.对冷却水管进行了热阻分析,证实了冷却水管与基体之间融合充分,不存在气隙.验证了铸钢特殊的屈服现象,其在热冲击后应变分布得到明显改善.
In order to study the high temperature performance of cast steel cooling stave, the temperature field distribution of cast steel stave was tested by hot experiment, and the strain gauge was installed on the stave of cast steel for the first time to study the strain distribution of cold stave. Under the condition of 1100 ℃ slag-free skin temperature, the maximum hot surface temperature of cast steel cooling wall is about 600 ℃, which is lower than the phase transition temperature of cast steel. The strain at centerline of cold-rolled surface is about -5 × 10-4, -3 × 10-4.The thermal resistance of the cooling water pipe was analyzed and it was confirmed that there was sufficient fusion between the cooling water pipe and the base without air gap.The special yielding phenomenon of the cast steel was verified and its strain distribution was obtained after thermal shock Significant improvement.