连铸爱惜浇注总结(国外英文资料).docVIP

连铸保护浇注总结(国外英文资料) Continuous cast protection pouring summary Continuous casting protection casting consists of five parts: ? Protection of large package liquid (steel cover); The inclusion of the inclusion in the scum ? The protection of large bags to medium and inter-enclosed flow (lads); Shape; Gasket; ? Protection of medium pack level; ? Protection of the flow of flow between the mold and the crystallizer (submerged nozzle); Argon gas protection, ? Protection of crystal liquid surface (crystallizer protection slag). The total protection of the cast is called non-oxidizing protection, and the total oxygen content in steel can be reduced to 20ppm from 130ppm when treated with steel. Package flow injection in ladle to not only protect or protect the poor, the total oxygen content in steel water again up to 60-100 parts per million, restore to the level before refining outside the furnace, refining outside the furnace disqualified. The maximum benefit of protecting the pouring is to reduce the inclusion content of the steel billet, which is an important means of producing clean steel. In the case of aluminum sedation steel and stainless steel, the formation of Al2O3, AlN, or TiN can be reduced, and the chance of less flocculation will be increased, which will increase the steel type that the continuous casting machine can produce. One, ladle long nozzle protect pipe protect cast Casting ladle long nozzle protection, is to use a long refractory casing with the ladle slide gate (nie) close connection, the gritting drains in joint into the argon sealing, prevent the air suction, the lower part of the refractory casing into liquid steel in tundish, the casting ladle to tundish flow completely sealed, can effectively prevent the oxidation of the secondary. 1, long nozzle shape and material The long nozzle (or protective casing) is installed in the bottom of the water port under the sliding water port of the ladle. There are two main types of structural forms: (1) a long n