Working temperatures in the range of 300400 °C significantly reduce forces, increase formability of the alloy, and substantially reduce springback. However, the springback values suggest the need
Formability Improvement Technique for Heated Sheet Metal To improve the formability of heated sheet metal, a deformation control technique utilizing the temperature dependence of flow stress is proposed. This technique can suppress local deformation by partial cooling around potential cracking areas to harden them before forming.
Mckinley J, Abedrabbo N, Worswick MJ, Kozdras M (2008) Effect of independent die and punch temperature control on the formability of 3003 aluminum alloy in warm deep drawing. Proc. of the 7th Int. Conf. Numisheet, Interlaken, Switzerland Google Scholar
Formability improvement with independent die and punch Nov 01, 2012 · Formability improvement with independent die and punch temperature control Formability improvement with independent die and punch temperature control Bagheriasl, Reza; Ghavam, Kamyar; Worswick, Michael 2012-11-01 00:00:00 Int J Mater Form (2014) 7:139154 DOI 10.1007/s12289-012-1115-6 ORIGINAL RESEARCH Formability improvement with independent die and punch temperature control
Improvement of Low Temperature Formability of AZ31 In the present study, a high reduction of 72% was achieved at a low temperature of 100 °C by employing high speed rolling (1000 m/min) in single pass. As compared, a low rolling speed of 15 m/min was selected to produce the Mg sheets at the same temperature. The sheet fractured at a reduction of 37% during low speed rolling.
In this work, the formability of Al-Mg-Si aluminum alloy sheets during hot stamping has been improved by controlling the press motion. In the hot stamping, a heated blank sheet is cooled partially by contacting with the dies; therefore, its deformation proceeds non-isothermally. The resulting temperature distribution leads to cracking at low forming depths during deep drawing despite the
Improvement of formability using partial cooling during Jan 01, 2018 · In hot stamping, the temperature distribution in a heated sheet was controlled to improve the formability. Kim et al. decreased the drop of temperature in flange portions by replacing draw type tools with form type tools having less contact, and improved the formability.
PAPER OPEN ACCESS Improvement of formability for hot Two approaches have been suggested for the improvement of steel formability by controlling the temperature distribution during forming:(i) promoting the deformation process by suppressing the temperature decrease during the forming step and (ii) partial cooling of the potential cracking area to suppress the local deformation.
mechanism of formability improvement has been consid- tensitic transformation at room temperature (RT).810 The ex situ uniaxial tension was carried out on the MTS 5105 Servo Control Computer System Universal Testing Machine. Tube tensile specimen was employed with 1mm wall thickness and 20mm outer diameter,(PDF) Improvement of formability using partial cooling The formability in hot stamping was improved by partial cooling of a heated sheet during the transfer from a furnace to dies. Using the transfer device having grips on the heated sheet, the