Q195盘条轧制工艺改进
|
摘要
拉细丝用Q195盘条由于表面氧化铁皮较薄、不易黏附润滑粉,导致细拉频繁断丝。调整斯太尔摩辊道速度,增加盘条在保温罩内时间。关键控制点温度控制优化后,在保温罩内时间为408～422 s,搭接点进罩温度为909～933℃,非搭接点进罩温度为869～878℃,搭接点出罩温度为744～752℃,非搭接点出罩温度为621～634℃,优化后表面氧化铁皮厚度从24.7μm增大到40.5μm,改善了拉丝状况,解决了细拉频繁断丝的问题。
Q195 wire rod for drawing fine wire breaks frequently due to its thin oxide scale and difficult to adhere lubricating powder. By adjusting the speed of Stelmor rollers and increasing the time of wire rod in the thermal insulation cover. After optimizing the temperature control of the key control points, the time in the thermal insulation cover is 408～422 s. the inlet temperature of overlap point is 909～933 ℃, the inlet temperature of non-overlap point is 869～878 ℃, the outlet temperature of overlap point is 744～752 ℃, and the outlet temperature of non-overlap point is 621～634 ℃. After optimization, the thickness of oxide scale on the surface increased from 24.7 μm to 40.5 μm, which improved the wire drawing condition and solved the problem of fine wire frequent breakage.
Q195 wire rod for drawing fine wire breaks frequently due to its thin oxide scale and difficult to adhere lubricating powder. By adjusting the speed of Stelmor rollers and increasing the time of wire rod in the thermal insulation cover. After optimizing the temperature control of the key control points, the time in the thermal insulation cover is 408～422 s. the inlet temperature of overlap point is 909～933 ℃, the inlet temperature of non-overlap point is 869～878 ℃, the outlet temperature of overlap point is 744～752 ℃, and the outlet temperature of non-overlap point is 621～634 ℃. After optimization, the thickness of oxide scale on the surface increased from 24.7 μm to 40.5 μm, which improved the wire drawing condition and solved the problem of fine wire frequent breakage.
引文
[1] 王克杰.低碳钢盘条氧化铁皮形成机理及其控制研究[J].天津冶金,2012(5):1-4.
[2] 戚正儒.高碳钢盘条氧化皮的组织与机械剥壳性能研究[D].南京:东南大学,2007.
[3] 刘祖强,樊强,廖恒萱,等.吐丝温度对Q195盘条性能及其氧化铁皮生成的影响分析[J].柳钢科技,2014(1):24-26.
[4] 刘伯昌,王胜国,沈黎晨,等.热轧窄带钢氧化铁皮的研究[J].上海金属,1988(5):54-57.
[2] 戚正儒.高碳钢盘条氧化皮的组织与机械剥壳性能研究[D].南京:东南大学,2007.
[3] 刘祖强,樊强,廖恒萱,等.吐丝温度对Q195盘条性能及其氧化铁皮生成的影响分析[J].柳钢科技,2014(1):24-26.
[4] 刘伯昌,王胜国,沈黎晨,等.热轧窄带钢氧化铁皮的研究[J].上海金属,1988(5):54-57.