CAJ | 학술논문

针对武钢连铸二冷水系统冷却效果不佳问题，对二冷水压缩空气控制系统、喷淋水控制系统和喷嘴特性等现状逐一进行分析，结果表明，由于二冷水压缩空气压力控制不稳，不能实现喷淋水、气的自由调控，以及由于喷嘴流量调节方法不当使得铸坯宽度方向上温差大，其结果导致了铸坯边角裂纹。解进方法是调整压缩空气控制方式，在支路上安装调节阀、压力检测器及流量计，优化二冷水、气配比参数，最终实现二冷水系统冷却效果的精确控制。二冷水系统改进后的效果极为显著。
침대무강련주이랭수계통냉각효과불가문제，대이랭수압축공기공제계통、분림수공제계통화분취특성등현상축일진행분석，결과표명，유우이랭수압축공기압력공제불은，불능실현분림수、기적자유조공，이급유우분취류량조절방법불당사득주배관도방향상온차대，기결과도치료주배변각렬문。해진방법시조정압축공기공제방식，재지로상안장조절벌、압력검측기급류량계，우화이랭수、기배비삼수，최종실현이랭수계통냉각효과적정학공제。이랭수계통개진후적효과겁위현저。
The status of the secondary cooling water system was analyzed from several aspects inclu-ding working principle of secondary cooling water ,the control systems of compressed air and spray water and the properties of nozzles ,in order to solve the problem of slab corner cracking caused by poor cooling effect of secondary cooling water .The result shows that the main factors resulting in poor cooling of secondary cooling water are the unstable air pressure control system ,non-free adjust-ment of pray water in the width direction ,and the improper adjusting manner of nozzle flow .By opti-mizing the control manner of compressed air ,installing control valve ,pressure sensor and flow meter in the branch circuit ,and optimizing the water and gas ratio of secondary cooling ,precise control of water and air of secondary cooling water is made possible ,the cooling effect of secondary cooling wa-ter is improved effectively ,and the number of corner cracks on the slab is reduced obviously .