EXPERIMENTAL INVESTIGATION ON THE FORMABILITY OF SQUARESHAPED CUPS BY HYDROMECHANICAL DEEP DRAWING PROCESS

Hydromechanical deep drawing (hdd), as an advanced forming technology, is gaining continuous interest in the sheet metal forming industry. current research, investigates the formability of copper (cu) and erdemir 6112 (dc01) sheet blanks through hydromechanical deep drawing. experiments have been carried out using custom designed and built hydromechanical forming test setup. the effects of process parameters such as chamber pressure (pi = 10 mpa, 20 mpa, 30 mpa), die radius (r = 4 mm, 6 mm, 8 mm), punch velocity (v = 6 mm/s, 12 mm/s, 18 mm/s), sheet metal thickness (t0 = 0,5 mm, 0,8 mm, 1,0 mm) and initial blank diameter (d = 120 mm, 130 mm, 140 mm) have been evaluated for the formability of square cup. in experimental studies; the limit drawing ratio of 2.6 was achieved in a single step operation for both material types. the results showed that smaller thickness variations for square-shaped cups were obtained in hydromechanical deep drawing process compared to the conventional deep drawing process.