精轧和吐丝温度对焊丝钢盘条表面红锈影响研究

对不同精轧和吐丝温度条件下焊丝钢盘条表面红锈情况进行对比分析。通过盘条氧化铁皮成分分析发现,出现红锈的铁皮中Fe3O4、Fe2O3含量较高。通过热力学分析发现,盘条与空气和水等介质反应,在高温条件下,有利于FeO的形成,较低的精轧和吐丝温度易于导致氧化铁皮Fe3O4、Fe2O3含量较高。同时,在较低精轧和吐丝温度条件下,盘条表面氧化铁皮的破裂,使FeO不断被氧化成Fe3O4、Fe2O3。在2种因素作用下,盘条表面易出现红锈。提高精轧和吐丝温度,可消除盘条表面红锈。

Effect of finish rolling and wire rod laying temperature on surface red rust of wire rod for welding wire steel

To analyze the surface red rust of wire rod for welding wire steel in different finish rolling and wire rod laying temperature conditions.It is found that red rust has higher content of Fe3O4 and Fe2O3 after wire rod scale composition is analyzed.It is found through thermomechanical analysis that FeO is easy to form in high temperature through reaction between wire rod and medium such as air and water,lower finish rolling and wire rod laying temperature cause higher content of Fe3O4 and Fe2O3 in scale.At the same time,cracks of wire rod surface scale cause FeO oxidized to Fe3O4 and Fe2O3 in condition of lower finish rolling and wire rod laying temperature.Red rust occurs easily on wire rod surface in two factors.Red rust can be prevented by increasing finish rolling and wire rod laying temperature.