连铸结晶器缓振行为分析  

Analysis on Buffer Oscillation Behavior for Continuous Casting Mold

作　　者：孟祥宁 王明江 刘向阳 生月伟 MENG Xiang-ning;WANG Ming-jiang;LIU Xiang-yang;SHENG Yue-wei(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2024年第5期668-674,共7页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(52074071)。

摘　　要：连铸结晶器采用8段式非正弦振动波形可使铸坯裂纹更少,裂纹愈合能力更强,但是其对应加速度大,容易产生振动冲击影响结晶器运行.以钢板弹簧和柔性弹簧对结晶器振动过程进行刚性加持和柔性减振,利用钢板弹簧和柔性弹簧的弹簧力平衡振动冲击产生的惯性力,可以达到减小冲击的目的.计算分析发现相同载荷下柔性弹簧比钢板弹簧的应力大,且每增加10%载荷,柔性弹簧最大应力比钢板弹簧多增加21.23 N.通过二分法计算发现,柔性弹簧平衡87.5%的惯性力,钢板弹簧平衡12.5%的惯性力,可以减小90%以上因加速度产生的冲击,为连铸结晶器8段式非正弦振动波形应用提供参考.The modified eight‑stage non‑sinusoidal oscillation waveform of the continuous casting mold leads to less crack defects in the casting billet and has stronger ability to heal such defects.However,the acceleration of the continuous casting mold is larger,which is sensitive to oscillation impact and affects the operation of the mold easily.By rigid clamping and flexible buffering with leaf spring and flexible spring respectively,the inertial force generated by oscillation impact of mold oscillation was reduced,it can achieve the purpose of reducing the oscillation impact.Calculation results show that the stress of spiral spring is larger than that of leaf spring under the same load.When the load of the continuous casting mold is increased by 10%,the increase of maximum stress of spiral spring is 21.23 N more than that of leaf spring.By bisection‐method calculation,it is found that,by allocating 87.5%and 12.5%of the inertia force for leaf spring and spiral spring respectively,more than 90%of the impact from oscillation acceleration is reduced.These results may provide some references for the application of the eight‐stage non‐sinusoidal oscillation technology in continuous casting mold.

关 键 词：连铸 结晶器 非正弦振动 冲击 缓振 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]