中文摘要：

对某板坯连铸二冷喷嘴冷态性能进行测试,得到喷嘴的流量特性、水流密度和冲击压力分布曲线及喷射角.采用数值叠加方法得到两个喷嘴按一定间距布置时的整体水流密度分布情况,分析表明,气水喷嘴布置间距为400 mm左右时,在断面方向可以保持铸坯均匀冷却.比较新旧喷嘴性能,新水喷嘴在使用5个月后特性总体变化不大,可以继续使用一段时间;新气水喷嘴使用8个月后喷嘴特性已改变,不能适应冷却需要,应及时检修或更换.

英文摘要：

The cold state characteristics of nozzles from a slab caster were tested.The flux characteristic,spraying angle,water flow density and impacting force distribution of the nozzles were presented.The method of superposed water flow density was put forward to optimize the nozzle arrangement,and it s used to check the whole water flow density distribution when two nozzles were arranged in a range interval.The analyzing results indicated that the slab was cooling uniformly at slab direction when the range interv...