wanhaorefractory

 The tundish is an important intermediate equipment that connects steelmaking and continuous casting in the steelmaking production process. It can store molten steel, distribute molten steel, ensure continuous pouring, reduce pressure and stabilize flow, promote the floating and removal of non-metallic inclusions, and uniform molten steel composition and temperature. And many other metallurgical functions. The normal operation of the tundish directly affects the antegrade of the continuous casting process and the final quality of the slab. However, due to the particularity of the working conditions of the tundish, not only the high-temperature molten metal is constantly eroded, but also experienced a sudden drop in temperature, which has a great impact on the life of the tundish. Cause Analysis 1.The difference in the composition of different dry ingredients The two dry aggregates use different grades of sintered magnesia or fused magnesia. When baking at low temper...

Submerged entry nozzle was development in 1960s. At first time, it was produced from quartz. With the development of continuous casting, it can not meet the requirement of high level continuous casting and special steel casting.  With the improvement of the level of casting, especially special steel casting, quartz submerged entry nozzle can not meet requirement of casting life and steel quality. Therefore, aluminum carbon and aluminum carbon-zirconium carbon combined submerged entry nozzles came out. Compared to quartz submerged entry nozzle, this nozzle is of much longer service life. In order to adapt to low carbon steel casting, the inner layer of the nozzle uses special materials like aluminum magnesium, ceramics, etc. For casting aluminum killed steel, nozzle would easy to get block out of caking. Against this condition, both blowing argon in the way of ventilation and using non-carbon-containing and calcium zirconate material have achieved a good result....

When customers purchase firebrick from us, and we certainly have to introduce them a range of knowledge about firebrick, and the density of firebrick most need to know, let our technician to tell you how to introduce customers firebrick density. Firebrick densities are based on different raw materials to the decision, because if the density of refractory bricks are the same, then it shows all aspects of the refractory bricks are the same, so if we choose firebrick, what does that mean? The density of the refractory bricks so we made a classification according to the material used in refractory bricks. The density of the refractory bricks and refractory bricks may also be resistant to some of the impurities in the outside world.   Refractory bricks density of different materials:   Ordinary firebrick: 1.8 ~ 2.0g / cm3 Dense firebrick: 2.05 ~ 2.20g / cm3 Silica brick: 1.80 ~ 1.95g / cm3 Magnesia brick: 2.60 ~ 2.70g / cm3 Alumina ...