转炉生产的钢水在精炼炉中精炼后，需要将钢水浇铸成不同类型和规格的钢坯。连铸段是将精炼钢水连铸成钢坯的生产过程。主要设备包括转盘、中间包、模具和张力矫直机。
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.
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，如动态变频控制和定长切割控制。连铸连轧要求连铸机能够生产出高温钢坯，并且所铸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生产率和高拉拔速度，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。
根据轧钢工艺的不同，连铸机以配置效率高、能耗低而著称。
1. After the scrap steel is smelted, it is transferred through the ladle, and the temperature of the molten steel is determined according to the lifting distance and the temperature in the workshop. Avoid excessively rapid temperature drop of molten steel, which may cause stacking and sticking when poured into the continuous caster, resulting in slow flow of molten steel, which will seriously affect production capacity.
2. The outside temperature is low, the temperature of molten steel drops quickly, and it decreases as the temperature continues to be cold. In order to solve this problem, a heat-preserving ladle can be used to maintain the temperature of the molten steel to ensure that the molten steel does not become viscous when entering the continuous casting machine.
3. It is difficult for the continuous casting machine to continuously cast the billet, and the temperature can be raised by blowing oxygen from the outside. Therefore, the continuous casting machine must meet the requirement of "continuous casting first, oxygen blowing later". At the same time, cooling water is used to spray the billet to cool down, and enter the rough rolling mill after being cut.
以上介绍了连铸与轧机冶炼与连铸协同作用的一些改进方案，相信连铸与轧机的效果会有很大的提高。
发布时间:2021年4月13日