Experimental Investigations of a Hydrodynamic Deep Drawing of a Low Carbon Steel 1008 AISI
Ali A.A. Mosa† , Ali Abbar Khleif† and Muhsin J. Jweeg‡
† Department of Production Engineering and Metallurgy, University of Technology
‡ Al-Farahidi University – Baghdad-Iraq
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This study aims to investigate the hydromechanical deep drawing process using a blank of low carbon steel (1008-AISI) with 80 mm of diameter and using different thickness (0.5, 0.7, 0.9) mm, respectively. Variable fluid pressure was applied by hydraulic oil (code number 3803) to get the finished product. A die was designed and manufactured. The conducted work of this study was achieved in three states as following: In the first state, the experimental work was done without fluid pressure, so the product suffers from wrinkles defect. In the second case, the wrinkles defects were minimized using 8 N/mm2. The third case testing was achieved under the pressure of 1.5 N/mm2. The results indicate that the free defect product can be achieved by choosing a blank holder force (BHF) not too high, not too low. If BHF is low, wrinkling defects appear in the cylinder cup, and I BHF is high, a rupture is found in the cylindrical cup. Therefore, the BHF value should be variable according to the material, thickness and product nature.