Abstract：In the actual production of high strength low alloy steel plate，the number rate of contract of Q345B steel was relatively large. In the actual production process of the company，there were some unqualifications in flaw detection，even these were larger and unplanned in a period. In order to find out the reason of the steel plate inspection unqualification，high magnification metallographic examination，scanning electron microscopy (SEM) and energy spectrum analysis，and other means were used to inspect and analyze unplanned steel of the Nanyang Hanye Special Steel. The reasons for ultrasonic inspection unqualification in Hanye Special steel production process mainly were the segregation leading abnormal microstructure，high content of inclusions and slab central porosity. The corresponding solutions were put forward.
收稿日期: 2014-03-14
出版日期: 2015-11-11
引用本文:
刘庆波. Q345B中厚板探伤不合原因分析及控制措施[J]. 中国钢铁期刊网, 2015, 34(5): 15-20.
LIU Qing-bo. Cause analysis and?control measures of unqualification in ultrasonic inspection of Q345B plate. Chinese Journal of Iron and Steel, 2015, 34(5): 15-20.
2015, Vol. 34 
