Features of packaging steel belt bending caster

The characteristic of the packaging steel belt bending type casting machine is that the casting billet is already naturally bent during the entire solidification process. Only in the tension correction zone was it forced to straighten and completely solidified. However, due to the low strength of the blank shell when the external force is applied by the pulling and straightening rolls, in order to prevent cracks in the cast blank, it is necessary to reduce the force exerted by each roller on the blank shell, thus a multi-roll straightening method appears. The force of each roller on the casting billet is reduced, and the number of rollers is increased, which can also ensure the total straightening force of the billet. In addition, the increase in liquid phase length caused by high-speed casting can be solved by extending the horizontal part of the casting machine. For the curved caster where the straightening is concentrated at the intersection of the arc and the straight line, because the slab bears a large straightening force, there is a risk of internal cracking, so a multi-point straightening type appears. In order to avoid internal cracking of the cast slab, another method is to adopt the so-called 'compression casting' method. The casting is also often subjected to compressive stress in order to offset the effect of tensile stress generated during bending.