钢纤维用盘条表面氧化铁皮的控制研究

Research on the controlling of surface oxide scale of wire coil for steel fibre

钢纤维用盘条表面氧化铁皮厚度和结构对其拉拔前的机械除鳞有较大的影响。为此,研究了不同吐丝温度和冷却工艺下盘条表面的氧化铁皮厚度和结构,结果表明:吐丝温度越高(860℃增加到890℃),生成的FeO层越厚(22μm);冷却速率越快(0.5℃/s增加到1.5℃/s),生成的Fe_3O_4层越薄(12μm)。当吐丝温度为880℃、冷却速率为1.5℃/s时,氧化铁皮厚度较薄(总厚度15μm),致密度较高(FeO:Fe_3O_4厚度比为4∶1),易于机械除鳞和拉拔。

The thickness and structure of surface oxide scale of wire coil for steel fibre have important effects on mechanical descaling before drawing. The thickness and structure of surface oxide scale of wire coil were reasearched by means of different spinning temperature and cooling rates. The results showed that the FeO was thicker （22 μm） at the higher spinning temperature （860 ℃ increase to 890 ℃）, and the Fe3O4 was thinner （12 μm） at the faster coohng rate （0. 5 ℃/s increase to 1.5 ℃/s） condition. The thinner thickness （total 15μm） and higher density （FeO：Fe3O4 is 4 ： 1） of surface oxide scale of wire coil was formed to take easily mechanical descaling and drawing when spinning temperature was 880 ℃ and the cooling rate was 1.5 ℃/s.