Development of Forming Temperature Curves for Warm Deep Drawing Process Under Non-isothermal Conditions

被引:8
|
作者
Cetin, M. Huseyin [1 ]
Ugur, Abdullah [1 ]
Yigit, Osman [2 ]
Gokkaya, Hasan [1 ]
Arcaklioglu, Erol [1 ]
机构
[1] Karabuk Univ, Dept Mech Engn, TR-78050 Karabuk, Turkey
[2] Yildirim Beyazit Univ, Dept Mech Engn, TR-06010 Ankara, Turkey
关键词
Warm deep drawing; Forming temperature; Failure-free cups; Optimum forming level; AA5754-O; FINITE-ELEMENT SIMULATION; MAGNESIUM ALLOY SHEET; BLANK HOLDER FORCE; ELEVATED-TEMPERATURES; ALUMINUM; FORMABILITY; DRAWABILITY; BEHAVIOR;
D O I
10.1007/s13369-015-1756-0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Temperature is the main effective process parameter in the warm deep drawing (WDD) process to improve the formability of light-weight engineering materials, and this feature requires the accurate measurement and assessment of temperature for process stability. In this study, an evaluation of the WDD process was conducted according to the forming temperature curves (FTCs) characterized from work piece temperatures instead of tool temperatures, as usual. To achieve this goal, a special index material was developed to accurately obtain FTCs from the work piece material under closed and heated tool conditions. The differences of temperature on work piece material are required to define temperatures by curves. The characteristic behavior of these curves was investigated under non-isothermal WDD of AA 5754-O. In the experimentation stage, the process parameters, namely FTC, blank holder force and punch velocity, which assure successful deep drawability, were determined according to the failure-free cups by analyzing wrinkling and tearing conditions and minimum cup height parameters as output parameters. As the next step, optimum conditions were investigated by evaluating the cup volume and spring-back parameters. As a general conclusion, approximately 330A degrees C in the flange-die radius region and 100A degrees C in the cup wall-punch bottom region are the ideal optimum temperatures for the warm deep drawing process.
引用
收藏
页码:2763 / 2784
页数:22
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