wanhaorefractory

 1. When the water inlet is installed, it is not tightened, and the pin is loose. When the pin locking the sliding plate is not tightened, the surface pressure between the two sliding plates is small, resulting in looseness during casting, and molten steel is sprayed from the loose side to burn the mechanism; 2. The dilution and consistency of refractory mud during water distribution construction are not properly controlled. If the refractory mud is too thin, it will be extruded, which can not support the sliding plate brick . At the same time, it is not resistant to the scouring of molten steel, and it is easy to form steel at this position; If it is too thick, the refractory mud cannot be spread evenly. There is a gap between the upper nozzle brick and the sliding plate, and the molten steel will be drilled out of the gap. There is less mud between the upper water outlet brick and the upper sliding gate plate , the upper part of the upper sliding plate will lose s...

  When pouring calcium treated molten steel, Ca and Cao in molten steel will react with Al2O3 and SiO2 in aluminum carbon or aluminum zirconium carbon sliding plate brick to form cao.sio2 and cao.sio2.al2o3 with low melting point. These low melts are washed away by molten steel, resulting in the rapid reduction of Al2O3 and SiO2 content on the surface of sliding plate brick, resulting in excessive corrosion of working surface of sliding plate brick , resulting in steel inclusion or breakout between sliding plate bricks. When the oxygen content in the molten steel is high, the carbon and graphite in the sliding plate will be oxidized to form a decarburization layer, which will increase the porosity and reduce the strength of the working face of the sliding plate brick , and aggravate the mechanical erosion and chemical erosion of the molten steel to the sliding plate brick. After tapping, the temperature of molten steel in the ladle is too high, and some heats are ...