Q345C钢板表面裂纹金相分析

Metallographic Examination of Q345C Surface Checks

文章对Q345C钢板表面产生的裂纹进行了宏观和光学显微镜分析。结果显示:裂纹产生的原因是加热之后在轧制过程中形成的折叠,1号裂纹上出现的大型杂质有可能是压入的氧化铁皮。

The Q345C surface checks are analyzed with macroscopic and microscopic examination.It is concluded that these surface checks were induced during heat rolling.This suggests that the big impurity in No.1 check is roll scale.