...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of University of Science and Technology Beijing >Formation mechanism of internal cracks in continuously cast slab
【24h】

Formation mechanism of internal cracks in continuously cast slab

机译：连铸板坯内部裂纹的形成机理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to make clear the formation mechanism of centerline cracks in continuously cast slabs, the form, distribution and other characteristics of the cracks were analyzed. The final solidification point, surface temperature of the slabs and strain in solidifying shell were investigated. The results were that: (1) Five relatively low temperature zones exist on slab surface below the three water spraying nozzles and near the two edges, respectively, which corresponds to the places of centerline cracks and triangle-zone cracks. (2) Centerline cracks and triangle-zone cracks occur because of weak secondary cooling, uneven cooling along slab width, and large variation of roll gap. (3) After minimizing the variation of roll gap and applying the new secondary cooling pattern, the occurring frequency of centerline and triangle-zone cracks minimizes to zero.
机译：为了弄清连铸坯中心线裂纹的形成机理，分析了裂纹的形成，分布及其他特征。研究了最终凝固点，板坯表面温度和凝固壳中的应变。结果表明：（1）平板表面在三个喷水喷嘴以下和两个边缘附近分别存在五个相对较低的温度区域，分别对应于中心线裂缝和三角形区域裂缝的位置。 （2）中心线裂纹和三角区裂纹是由于二次冷却较弱，沿板坯宽度的冷却不均匀以及辊缝变化较大而产生的。 （3）在最小化轧辊间隙的变化并应用新的二次冷却模式之后，中心线和三角形区域裂纹的出现频率最小化为零。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号