Mixure for producing compound integrated blocking stick

Abstract

An integral composite plug rod features that it rod body contains the recovered sprue material after casting steel (45-85 wt.%), brown corundum (5-15 wt.%), graphite (5-25 wt.%), industrial silicon (1-10 wt.%), and silicon carbide (0.5-10 wt.%), and its rod head cnotains white corundum (40-60 wt.%), zirconium mullite (3-25 wt.%), high-temp alumina powder (5-12 wt.%), graphite (5-28 wt.%) industrial silicon (2-5 wt.%) and silicon carbide (2-5 wt.%). Its advantage is long service life.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a composite integral stopper used in continuous casting. Background technique [0002] The integral stopper is a disposable refractory material used for continuous casting in the metallurgical industry. The use of the stopper can control the flow of molten steel flowing from the tundish into the crystallizer to achieve the purpose of uninterrupted casting. The existing integral stoppers mostly belong to the integral stoppers made of aluminum carbon and magnesium carbon. Silicon fume is processed from fine materials. Since the working surface of the stopper rod is the rod head and the rod body is the non-working surface, reducing the cost of the stopper rod without affecting the working performance of the stopper rod is an urgent problem to be solved by all stopper rod manufacturers. Up to now, various manufacturers mainly use brown corundum and graphite as raw materials, or ...

AI Technical Summary

Problems solved by technology

Although these two methods have reduced the cost of the overall stopper rod to varying degrees and prolong the service life of the stopper rod, the manufacturing and use costs of the stopper rod are still relatively high