Adapter plate

The roughness of the three-stage casting nozzle differs in surface appearance and section. There is no dust on the surface of the T-level casting nozzle with the palm of your hand, and different degrees of dust fall below the T-level. The structure of the cross-section T-level casting nozzle is tight, and the following levels gradually become rough and loose. Class A, Class G, Class T Casting Nozzles Different Raw Materials Class A Casting Nozzles are made of natural hard clay clinker, with fiber Al2O3 content ≥ 45% and harmful impurity content of 3% ~ 4%. The use temperature of optical fiber is 1000 ℃. G-grade casting nozzle adopts high-purity aluminum silicate fiber, industrial alumina powder and silicon powder composite as raw materials, so that the content of harmful impurities <1%, not only the use temperature is higher than ordinary aluminum silicate fiber, but also suitable for reducing atmosphere. The use temperature of optical fiber is 1100 ℃. The T-grade casting nozzle uses high aluminum fiber: industrial alumina powder and silica powder composite material as raw materials. Fiber Al2O3 content ≥ 55%, harmful impurity content <1%. Due to the high content of Al2O3 in the fiber, and the ratio of Al2O3 and SiO2 in the fiber is close to the mullite composition, the crystallization amount of cristobalite is reduced, thereby improving the heat resistance and thermal shock resistance of the fiber. The use temperature of the optical fiber is 1200 ℃.