连铸连轧和新型轧钢设备在飞轮轧制过程中对冲击载荷的响应性能

转炉生产的钢水在精炼炉精炼后,需要将钢水铸成不同类型、规格的钢坯。连铸段是将精炼后的钢水连铸成钢坯的生产过程。主要设备包括转盘、中间包、模具、张力矫直器。

  The non-sinusoidal vibration technology of the mold has significant effects in improving the drawing speed, improving the surface quality of the casting slab, and reducing the leakage rate. This technology can not only increase the drawing speed of the continuous caster, increase the productivity, reduce the leakage of the continuous caster, and stabilize the production of the continuous caster, but also can provide high-quality cast slabs for rolling and improve the quality of the rolled material. To

   The ladle containing refined molten steel is transported to the turntable. After the turntable rotates to the pouring position, the molten steel is injected into the tundish, and the tundish distributes the molten steel to each mold through the nozzle. The mold is one of the core equipment of the continuous casting machine, which makes the casting shape and rapidly solidify and crystallize. The tension leveler and the crystal vibration device work together to pull out the castings in the crystallizer, and cut them into slabs of a certain length after cooling and electromagnetic stirring.

 Continuous casting automation control mainly includes continuous casting machine drawing roll speed control, mold vibration

控制技术如动态频率控制和定长切割控制。连铸连轧要求连铸机能够生产高温钢坯,铸造的钢坯具有较高的表面质量和内部质量。同时,要求连铸机具有稳定的高产率和较高的拉拔速度,以满足高速轧制的需要。结晶器非正弦振动技术是连铸连轧的关键技术。

轧机飞轮在轧制过程中受到冲击载荷。轧机通过飞轮和减速器带动轧机。一部分负荷由飞轮释放。轧机的主传动要求高的动态响应和高的过载能力。飞轮广泛应用于切割机、冲压机械等。飞轮的辐条采用环形平面板结构,其厚度接近飞轮的厚度。轧机飞轮在最佳状态下工作,可减少电机发热,节省动力。

当轧机处于负载状态时,轧机飞轮减速释放能量,帮助电机克服峰值负载。辐条与轮毂之间的厚度变化梯度较小,因此消除了关节处容易引起应力集中和裂纹的结构缺陷。增加飞轮厚度,在变化条件下减小飞轮直径,也有利于应力分布均匀,增加承载能力。当间隙中没有负载时,飞轮加速并储存能量,因此电机负载可以均匀分布。、拧紧螺母等时,严禁用锤子或淬硬钢件敲击,安装时还应测试飞轮的静平衡。

新型高良率轧机设备,在冷却床后配有在线多台矫直机和冷剪定长飞剪。将轧件通过整个冷床长度的多个长度进行矫直,然后再使用剪刃。带孔型的飞剪将轧制件切成商业切割长度。采用机架式步进式冷床对轧制件进行均匀冷却,圆钢、螺纹钢等简单截面钢冷却后平整度好,无需矫直即可发货。对于槽钢、角钢、工字钢等型材,则需要经过冷却床冷却后进行矫直。双尺冗余矫直,大大减少了头咬次数,事故少,效率高。采用这种技术和设备,生产机械化,自动化程度高,大大减少了精加工面积和操作人员。


发布时间:2021年5月- 28