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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 the oxide scale on the surface of the steel fiber rod have a greater impact on the mechanical descaling before it is drawn. The results show that the thicker the FeO layer is (22μm) when the temperature of spinning is higher (from 860 ℃ to 890 ℃), and the thickness and structure of the scale on the surface of the wire rod under different spinning temperatures and cooling processes are studied. The faster the cooling rate (0.5 ℃ / s to 1.5 ℃ / s), the thinner the Fe_3O_4 layer was formed (12μm). When the spinning temperature is 880 ℃ and the cooling rate is 1.5 ℃ / s, the scale is thinner (total thickness is 15μm) and the density is higher (the thickness ratio of FeO: Fe_3O_4 is 4:1) pull.