Paper Details

Defect arises in the part of flange shaft (casting) made of material GS42crMo4. After castings were made, theywere inspected in inspection department by visual test and non-destructive test. If casting has minor defect then it couldbe repaired. If defect was major then it could not be repaired and casting was rejected. In one particular casting (thepart of flange shaft) the crack was observed at the head, on radius portion, which was major defect. Due to heavythickness section at the head side, the smaller radius may shrink. Crack was observed after final machining on radiusportion. It was a blind crack inside the casting product, and it was invisible before machining. It was due to the stressconcentration at the radius portion. So, it could not be repaired by grinding and welding. Due to this major defect thecasting was rejected.We change the design at the radius portion; because defect was occur at the head of the casting on the radiusportion. In the defective design there were two small radii at the head portion, where stress concentration was more, sothere was a possibility of occurring crack.Then we change the design by making one big radius instead of two small radiuses, & stress concentration at thehead portion was decreased and so we minimized defect of casting flange.

Rana Rafikmahammad Pyarasaheb, Kayastha Krunal Suryakant, Parmar Ashwin Babubhai, Nakum Magan Bavbhai, “Analytically Analysis Related To Stress Concentration on Casting Material of Flange”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 6, pp. 296-300, June 2015.