07.2021.227.235

Experimental Investigations of a Hydrodynamic Deep Drawing of a Low Carbon Steel 1008 AISI

Author(s):

Ali A.A. Mosa , Ali Abbar Khleif and Muhsin J. Jweeg

Affiliation(s):

Department of Production Engineering and Metallurgy, University of Technology

Al-Farahidi University – Baghdad-Iraq

Corresponding Author Email: muhsin.jweeg@uoalfarahidi.edu.iq, alialshabiny48@yahoo.com, alialshabiny50@gmail.com

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.