EXPERIMENTAL INVESTIGATION OF INPUT PARAMETERS ON EROSION RATE AND RESIDUAL STRESS IN CORE MOLDING PROCESS

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SHABGARD MOHAMMAD REZA; JEDARI SAGHAIE MOHAMMAD

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:8 Page(s): 386-392

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Information Journal Paper

Title

EXPERIMENTAL INVESTIGATION OF INPUT PARAMETERS ON EROSION RATE AND RESIDUAL STRESS IN CORE MOLDING PROCESS

Author(s)

SHABGARD MOHAMMAD REZA | JEDARI SAGHAIE MOHAMMAD | Issue Writer Certificate

Keywords

EROSIONQ2

PEARLITIC DUCTILE IRONQ2

AUSTEMPERED DUCTILE IRONQ2

RESIDUAL STRESSQ2

Abstract

In the present study, in order to investigate the effect of impact angle and sand jet pressure on the EROSION rate and RESIDUAL STRESS in sand molding operation, the experiments are performed using gray cast iron (GCI), PEARLITIC DUCTILE IRON (PDI) and AUSTEMPERED DUCTILE IRON (ADI) as workpiece materials. To fulfill this objective, experimental tests are conducted in full factorial design with workpiece material, impact angle and jet pressure as input and erosive wear rate and RESIDUAL STRESS as output parameters. According to the results, variation of impact angle of erosive particles intensively affects the EROSION rate of materials in way which, among the experiments that are carried out in lower impact angles (15 to 30o), ADI cast iron shows the maximum erosive strength; however, as the impact angle shifts to higher values (75 to 90o), PDI cast iron becomes more resistant against EROSION. It can also be noted from the SEM images that in sand shooting process, the presence of flake graphite in gray cast iron causes more formed and grown cracks which significantly intensifies its EROSION rate relative to ADI and PDI cast irons. Additionally, comparative analysis of results revealed that formation of surface micro cracks in gray cast iron material causes less induced compression RESIDUAL STRESSes relative to ADI cast iron whose great stiffness leads to higher magnitudes of compression RESIDUAL STRESS in sand molding operation. In addition, it is observed that regardless of employed material, increase of erosive particles shooting pressure increases EROSION rate of the workpiece.

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APA: Copy

SHABGARD, MOHAMMAD REZA, & JEDARI SAGHAIE, MOHAMMAD. (2015). EXPERIMENTAL INVESTIGATION OF INPUT PARAMETERS ON EROSION RATE AND RESIDUAL STRESS IN CORE MOLDING PROCESS. MODARES MECHANICAL ENGINEERING, 15(8), 386-392. SID. https://sid.ir/paper/179069/en

Vancouver: Copy

SHABGARD MOHAMMAD REZA, JEDARI SAGHAIE MOHAMMAD. EXPERIMENTAL INVESTIGATION OF INPUT PARAMETERS ON EROSION RATE AND RESIDUAL STRESS IN CORE MOLDING PROCESS. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(8):386-392. Available from: https://sid.ir/paper/179069/en

IEEE: Copy

MOHAMMAD REZA SHABGARD, and MOHAMMAD JEDARI SAGHAIE, “EXPERIMENTAL INVESTIGATION OF INPUT PARAMETERS ON EROSION RATE AND RESIDUAL STRESS IN CORE MOLDING PROCESS,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 8, pp. 386–392, 2015, [Online]. Available: https://sid.ir/paper/179069/en

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