论文部分内容阅读
利用扫描电镜对一种热轧板的表面氧化铁皮形貌进行观察,并在实验室中通过改变加热温度和加热时间对试样的氧化铁皮形成过程进行了模拟。结果表明,热轧板上下表面的氧化铁皮形态具有明显的差异,热轧板上下表面均有氧化铁皮压入的现象,且上表面压实氧化铁皮周围可见氧化铁皮碎化。热轧板氧化增重与保温时间成线性关系,初始氧化层可以一定程度的阻止氧的扩散。模拟得到试样氧化速率方程为W=4.52 e-Ea/RTt。
Scanning electron microscopy (SEM) was used to observe the morphology of the scale on the surface of hot-rolled steel. The formation of scale in the sample was simulated in the laboratory by changing the heating temperature and heating time. The results show that the morphologies of the scale on the upper and lower surfaces of the hot-rolled sheet are obviously different. The upper and lower surfaces of the hot-rolled sheet are pressed into the scale, and the iron oxide scale is shredded around the upper surface of the compacted scale. Hot-rolled plate oxidation weight gain and holding time into a linear relationship, the initial oxide layer to a certain extent, stop the proliferation of oxygen. The oxidation rate equation of the sample is W = 4.52 e-Ea / RTt.