Investigation of Drawability of Al 1050 Sheet Metal Material

Abstract

In this study; The effects of drawing speed (punch speed), sample width and punch diameter change on the Erichsen Index of Al 1050 (99.53% commercial purity) material, which is widely preferred in the industrial sector, were investigated experimentally. Fully automated Erichsen cupping equipment designed, manufactured and calibrated was used in the experimental studies. The tests were carried out with 8 mm, 15 mm and 20 mm spherical end punches in accordance with ISO 20482 standard at 5 mm/min, 6.25 mm/min and 8 mm/min punch speeds. From the results of the Erichsen cupping test; It has been determined that, from the point where the punch diameter reaches 1.5 times the value of the punch diameter, the punch load and the Erichsen Index-EI value decrease when the sample width is equal to the punch diameter. In addition, it was found that EI increased with increasing punch diameter. Experimental findings obtained from the test device designed, manufactured and calibrated; It has demonstrated that it is a hardware capable of detecting reliable Erichsen Index values with a precision of 0.01 mm.