Introduction to horizontal, arc and elliptical continuous casters

Horizontal continuous caster

The crystallizer, secondary cooling zone, tension leveler, cutting equipment and other equipment of the horizontal continuous caster are installed at the horizontal position, and the tundish is closely connected with the crystallizer. A separation ring is installed at the connection between the tundish nozzle and the crystallizer. During billet drawing, the mold does not vibrate, but is realized by the periodic movement of billet drawing, stop, reverse push and stop driven by the billet drawing machine. The horizontal caster is the lowest height caster.

However, due to the inability to shut down, it is necessary to replace the expensive separation ring and repair the crystallizer and graphite sleeve. Continuous power on shall not exceed 24 hours. The mould cannot be lubricated and the drawing device is too complex, so it is not widely used.

Arc continuous caster

Because the mold is arc-shaped, the billet drawn out is also arc-shaped. The mold and the secondary cooling section are configured on the quarter arc. Before being straightened, the billet moves downward along the arc and solidifies. It is straightened once with a five roller tension leveler in front of the vertical center tangent point. When the billet is straightened, the inner arc extends outward and the outer arc is extruded inward. Because the five roller tension leveler is single-point straightening, in order to prevent cracks For billet breaking and internal damage, the deformation of billet shall be controlled within the allowable deformation coefficient, and the arc radius shall be increased, which is the reason why the arc machine is built. At present, arc forming machine is mainly used in small square billet and round billet below 150mm at home and abroad. For example, the height of pull casting large slab shall be at least 15m. The investment in infrastructure is too large, so it is not suitable for drawing and casting large slab

Oval continuous caster

In order to further reduce the height of the continuous caster and reduce the investment scale, change one arc radius of the arc type continuous caster into multiple arc radii, that is, gradually increase the arc radius from the mold downward, and straighten it after it reaches the allowable deformation. In this way, the method of gradually increasing the arc radius with a small arc mold can be used to reduce the height of the caster. This model is also known as ultra-low head continuous caster. Compared with the arc machine, it has a large number of rollers, high manufacturing accuracy and relatively complex arc adjustment and installation. At present, it is usually used in drawing casting large slab and special-shaped slab.