摘 要 ：本文通过低倍酸浸、断口形貌、金相组织等分析方法，对高强度船板拉伸断口不合的原因进行了讨论分析，结果表明连铸坯的中心偏析和中间裂纹造成的异常组织和长条状MnS夹杂是断口不合的主要原因。并根据连铸机现状水平，采取优化辊缝收缩方案、加强二冷系统和扇形段的管理，使得高强船板断口合格率稳定在97%左右。
Abstract：The cause of tensile fracture of High Strength Ship Plate was discussed by means of -detecting,fracture pattern,microstructure.The results show that abnormal structure and lath-MnS is the major representation of unqualified fracture, which is occurred with center segregation and halfway crack.The rate of nomal fracture is keeped about 97% by optimizing roll gap shrinkage and strengthening management of second cooling and Fan-paragraph, according to now level of casting machine.
参考文献
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%