The process of Electrical slag surfacing with liquid metal(ESS LM)is a complex physical and chemical process including electric field,magnetic field,flow field and temperature field,etc.As the complicated technology a...The process of Electrical slag surfacing with liquid metal(ESS LM)is a complex physical and chemical process including electric field,magnetic field,flow field and temperature field,etc.As the complicated technology and high cost of manufacturing compound rolls,simulating the relationship between ESS LM process parameters and physical fields of ESS LM process is important.Through the numerical simulation of finite volume method to the process of ESS LM in the conditions of different roll core diameters,slag amount,pouring speed,pouring temperature and input power,temperature field and flow field in different conditions were obtained.When the diameter of core material, operation voltage,pouring rate,pouring temperature and slag height of conductive mold was 250mm,40V,8mm/min, 1750K and 50mm respectively,the depth of molten metal was 30mm and fusion thickness of core material was 5mm which was consistent with the experiment results.According to the simulation results,operation with voltage of 42V, cladding speed of 10mm/min,pouring temperature of 1760K and slag height of 54mm in the conductive mould,achieved much more shallow metal pool,which is beneficial to vertical crystallization.展开更多
基金Item Sponsored by Central University of basic scientific research expenses in graduate students' research projects(N090602006)the National Natural Science Fund Project(50904015)+1 种基金National Natural Science Foundation of China Youth Project(51104038)Basic scientific research expenses of young teachers' scientific research project(N100302006)
文摘The process of Electrical slag surfacing with liquid metal(ESS LM)is a complex physical and chemical process including electric field,magnetic field,flow field and temperature field,etc.As the complicated technology and high cost of manufacturing compound rolls,simulating the relationship between ESS LM process parameters and physical fields of ESS LM process is important.Through the numerical simulation of finite volume method to the process of ESS LM in the conditions of different roll core diameters,slag amount,pouring speed,pouring temperature and input power,temperature field and flow field in different conditions were obtained.When the diameter of core material, operation voltage,pouring rate,pouring temperature and slag height of conductive mold was 250mm,40V,8mm/min, 1750K and 50mm respectively,the depth of molten metal was 30mm and fusion thickness of core material was 5mm which was consistent with the experiment results.According to the simulation results,operation with voltage of 42V, cladding speed of 10mm/min,pouring temperature of 1760K and slag height of 54mm in the conductive mould,achieved much more shallow metal pool,which is beneficial to vertical crystallization.
