Reaction sintered sandblasting silicon carbide nozzle have high hardness and severe wear resistance and other characteristics.This kind of wear resistance product can be used to make sandblasting silicon carbide nozzle,water sand cutting nozzle and coal nozzle for steel mills,thermal power plants and other industries,its service life is 5-10 times that of ordinary materials.There are many kinds of ceramic materials used as nozzles,and commonly used are alumina,silicon carbide ceramics,etc.Alumina ceramic nozzles have mature production technology and lower price,but due to their low hardness,their wear resistance and erosion resistance are poor,so the alumina ceramic nozzles often used in occasions where the sand blasting load is not large.The service life of silicon carbide ceramics is 3 to 5 times that of alumina ceramics,due to the high hardness, corrosion resistance and high temperature strength of silicon carbide ceramics,makes silicon carbide ceramics widely used in many directions,such as refractories, seals, nozzles and so on.Due to most of the nozzles currently used in the factory are made of steel material,they have bad erosion resistance and wear wear resistance,during the working process of the sandblasting machine, the inner circular surface of the nozzle will wear and become elliptic,so it will greatly affected the quality of sandblasting machines,and it needs to be replaced after working for an hour or two.But the silicon carbide ceramic parts have good wear resistance,high erosion resistance,longer operation life and high work efficiency,such as sandblasting silicon carbide nozzle.