Thermal stress analysis and structural optimization of ladle nozzle based on finite element simulation

Abstract The ladle nozzle is one of the most important components in metal smelting. cracking phenomenon occurs due to excessive thermal stress, which seriously affects performance and life nozzle. In this paper, a new composite structure proposed, consists two materials with different properties costs. physical parameters material are measured by high temperature dynamic Young’s modulus test method, expansion flashing method. Based on structural model nozzle, finite element simulation used combine ontology model, contact mechanics heat transfer study stress distribution inside during casting process taking representative key points There large gradient area near hole, farther away from smaller change. was optimized compared existing structure. results show that has significantly lowered extremes under shock, while tends be more uniform, can largely reduce chance crack generation. This great significance for improving reliability service reducing its production cost.