Multi-hole stopper rod for continuous casting

Abstract

The invention provides a multi-hole stopper rod for continuous casting. The multi-hole stopper rod for continuous casting comprises a stopper rod body and a stopper rod head which is connected to the bottom of the stopper rod body, an argon passage is arranged in the stopper rod body, the argon passage extends to the internal part of the stopper rod head, gas guide holes are horizontally formed in the stopper rod head, the gas guide holes are perpendicular to the axis of the argon passage, and the gas guide holes are formed above the contact surface between a gate and the stopper rod head and are communicated with the argon passage. Compared with the prior art, the multi-hole stopper rod for continuous casting has the advantages that the impurity products at the contact part between the gate and the stopper rod head can be very well cleaned, the flow rate of molten steel can be more accurately controlled, the bias flowing of the molten steel in the gate and the unstable state of vortexes are reduced, and the overall efficiency of continuous casting and the quality of the molten steel are improved.

Description

technical field [0001] The invention relates to a porous stopper rod for continuous casting. Background technique [0002] Continuous casting has become the main way of steelmaking production in modern iron and steel enterprises. The stopper rod is an important element to control the flow of molten steel from the continuous casting tundish to the continuous casting mold and the liquid level of the mold. By blowing argon gas, the solid impurity products deposited on the inner wall of the nozzle are washed away, and the molten steel in the nozzle is absorbed. Solid impurity products improve the quality of molten steel. [0003] Such as figure 1 As shown, the current common stopper rod includes a stopper rod body 1 and a stopper rod head 2 arranged at the bottom of the stopper rod body 1. An argon gas channel 3 is opened inside the stopper rod body 1. On the stopper rod head 2 An air guide hole is opened, and the air guide hole and the argon channel 3 are on the same axis. ...

AI Technical Summary

Problems solved by technology

However, the argon gas bubbles blown out by this stopper cannot wash away the solid impurity products on the inner wall of the bowl of the nozzle 4 and the outer wall of the stopper tip 2, that is, the impurities in the contact part between the nozzle 4 and the stopper tip 2 cannot be formed well. clean up

The accumulation of these impurity products will cause the stopper rod to be unable to accurately control the flow rate of molten steel, resulting in partial flow of molten steel in the nozzle 4, and the unstable state of eddy current will affect the overall efficiency of continuous casting and the quality of molten steel

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