Introduction
Air atomization nozzle is a kind of atomization device, which uses compressed air as the atomization medium, under certain pressure and the nozzle outlet shape to make the liquid into extremely tiny droplets and spray it onto the surface of the workpiece. It has wide application range, and is one of the important process of thin and uniform film formation. As a special atomization device for steel continuous casting, air atomizing nozzle can ensure even cooling, reduce the workpiece side crack and have significant energy saving effect in continuous casting of steel.
Application of air atomization nozzle on small billet continuous casting
1.Cooling
Heat dissipation of continuous casting is a key technical point, and the cooling mode of continuous casting has a significant impact on the quality of the end product. Traditional cooling methods are generally using air cooling and water cooling, but this cooling method is difficult to keep even and consumes too much energy, and is not suitable for mass continuous casting produetion. Air atomizing nozzle has the advantages of atomizing thin and uniform, able to cool more evenly and quickly, and able to save a lot of energy. As a result, it is increasingly used in the field of small billet continuous casting.
2.Avoid side crack
When the small billet continuous casting workpiece is cooled, the cooling unevenness of the surface layer of the workpiece will cause local stress, which will cause surface cracks. While air atomization nozzle is able to atomize liquid into extremely thin droplets and spray them onto the surface of the workpiece from multiple orifices in the nozzle, helping to evenly cool the surface of the workpiece and reduce the defects to a minimum.
3.Energy saving
Due to uneven cooling of small billet continuous casting workpiece, the cooling time is prolonged, which is not conducive to high efficiency production, and large amount of energy is wasted. Air atomizing nozzle can atomize liquid into extremely thin droplets and spray them evenly onto the workpiece surface, so that the cooling time is greatly shortened and the energy consumption is greatly reduced.
Conclusion
Air atomizing nozzle has become an important process for thin and uniform film formation and cooling in small billet continuous casting. It can ensure even cooling, reduce the workpiece side crack and have significant energy saving effect. Therefore, air atomizing nozzle is widely used in the field of small billet continuous casting.
