CFD Analysis of Centrifugal Casting to Improve the Flow of Coolant during Solidification Process
Keywords:
Centrifugal Casting, Process Parameters, Solidification Process, CFD Analysis.Abstract
Centrifugal casting process is an example of complex heat transfer process. In Centrifugal casting process the flow of heat occurs in the form of conductance and convection. The quality of parts produced with process depends upon the effectiveness of solidification process and magnitude of shear stresses induced in die. Centrifugal casting process operates through process parameters such as preheating temperature of die, pouring temperature of molten metal, pouring rate, coolant temperature, convective heat transfer & rotational speed of die. The flow of coolant over the die during solidification process evaluates the rate of solidification. Insufficient flow of coolant over the die results in forming different cooling rates for solidification of casting. Different cooling rates during solidification process generate thermal stresses in the casting. Therefore, it is important to control and keep uniformity in the flow of coolant during the solidification process to minimize thermal stresses induced centrifugal casting. Hence, it is necessary to carry out the CFD analysis of centrifugal casting process by using the tool of finite element analysis (FEA). This article explains fluid flow analysis of centrifugal casting process carried out with ANSYS CFX Workbench software. Centrifugal casting process parameters are used as crucial parameters to find its influence on coolant flow and thermal stresses induced in the casting.
References
2. Joshi AM. Centrifugal Casting. Department of Metallurgical Engineering and Material Science, Indian Institute of Technology.
3. Kharicha A, Bohacek J, Ludwig A et al. Vibrations Induced flow in horizontal centrifugal casting. Journal of CFD modelling & material simulation, The mineral, metal & material society 2012: 227-34.
4. Watanabe K, Miyakawa O, Takada Y et al. Casting behaviour of titanium alloy in centrifugal casting machine. Journal of Biomaterials 2003: 1737-43.
5. Hormaza W, Mateus L, Maranon A et al. Failure analysis of cylinder sleeve from turbocharged diesel engine. Journal of Engineering Failure Analysis 2009; 16: 1355-65.
6. Srivastava RM. Cooling rate evaluation for bulk amorphous alloy from eutectic microstructure in casting process. Department of Metallurgy & Materials Engineering, Indian Institute of Technology Kharagpur, 2002; 43: 1670-75.
7. Changyun L, Shiping W, Jingjie G et al. Model experiment of mold filling process in vertical centrifugal casting. Journals of Material Processing Technology 2006; 176: 268-72.
8. Madhusudhan, Narendranath S, Mohan Kumar GC. Experimental study on cooling rate of centrifugal casting based on grain size. International Journal of Scientific& Engineering Research 2012; 3: 1-3.
9. Ijamulkar N, Chimote K, Zakiuddin KS. Design and Implementation of centrifugal casting locking plate. International Journal of Scientific and Engineering Research 2012; 3: 1-4.
10. Chirita G, Stefanescu I, Barbosa J et al. On assessment of processing variables in vertical centrifugal casting technique. International Journal of Cast Metal Research 2009; 22: 382-89.
11. Song NN, Wu SP, Kang XH et al. Hydraulic experiments of mold filling process in horizontal centrifugal casting. Advanced Materials Research 2011; 154: 314-20.
12. Klotz UE, Drago T. The role of process parameters in platinum casting. The research institute for precious metals and metals chemistry, Schwabisch Gmund, Germany, 2011; 1: 20-27.
