Phenomena,characteristics and mechanism of the reddening of oxide scales formed on hot-rolled steel sheets and strips
In the present paper the characteristics and behavior of the oxide scales formed on hot-rolled steel plates becoming reddish (red-scale)was summarized and the effects of the main manufacturing processes and parameters on this were analyzed.Based on the formation mechanism and the structure of oxide scales developed on carbon steel,it is concluded that the mechanism for the reddening of the whole surface area of oxide scales is different from that of the formation of tiger stripes,and furthermore,formation of the red-scale is related to slab heating temperature (the temperature of reheating furnace),the thickness of the primary scale and the secondary scale,descaling result,finishing rolling temperature and the further oxidation of strips during water cooling,etc.Red-scale defects were often observed on the steels with high Si content,but the high Si content level was not the necessary condition for the red-scale formation.Finally,the controlling measures to mitigate occurrence of the red-scale on hot-rolled steel plates were proposed.
hot-rolled steel plate red-scale influencing factors mechanism controlling measures
Qi Huibin Wang Wei Qian Yuhai Zhou Qingjun
Baosteel Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China
国际会议
上海
英文
413-420
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）