Aluminum Silicate Casting Tip, also known as the casting nozzle, is a key component that directly transports and distributes the metal body to the casting roll during the continuous casting and rolling process. It is composed of upper and lower mouth fans, several spacers and side ears.
Material Requirements of Aluminum Silicate Casting Tip
It is a refractory board made of ceramic fiber and silicon aluminum fiber through vacuum pressing. It is a light-weight refractory product with the following properties: good stability at high temperatures; good thermal insulation and low thermal conductivity; It has good thermal shock resistance; does not react with molten metal and is resistant to metal corrosion; it has good processing performance and can be processed at will.
The internal structure of the feed nozzle is very important for the stable production of cast-rolling and the improvement of the quality of cast-rolled plates. The internal gasket cloth requirement is to make the temperature field and flow field of the metal in the feed nozzle as uniform as possible. The size, spacing and quantity of gaskets are determined by different nozzle structure and width.
The production of the mouth fan. Because the solidified metal will have a certain width after rolling, according to the chamfering of the edge ears and the alloy composition, the width of the processed mouth fan should be 5-100mm smaller than the required plate width. The end faces on both sides of the processed mouth fan should be perpendicular to the bottom end face, and the end faces on both sides should be flush to ensure that there is no gap between the side ears.
The thickness of the front edge of the mouth fan generally varies according to the material and strength of the mouth fan. Determining the thickness of the front edge of the nozzle fan must be organically combined with the alloy, plate thickness, and rolling force in the casting and rolling zone. The thickness of the front edge of the mouth fan is generally 2.5-5mm.