Transactions of Materials and Heat Treatment

Title：Study of die temperature rising in fine blanking process

Authors： Cao Chuanliang Zhang Xianglin Dong Chunfa Li Zhenglong

Unit： Huazhong University of Science and Technology

KeyWords： fine blanking FEM die temperature measurement

ClassificationCode：

year,vol(issue):pagenumber：2014,39(7):113-117

Abstract：

To study the influence of temperature rising in sheared region during fine blanking process on the die, a special fine blanking die fixed with thermocouple to measure the temperature change of die was designed and manufactured. Real-time measurements of the temperature for the die in the continual fine blanking process with four kinds of sheet metal were carried out. The temperature change in the continual fine blanking process was simulated by using coupled thermal-mechanical finite element method. The results show that the temperature rising is smaller when fine blanking the sheet metal with better plasticity. If the tensile strength is higher and the material thickness is thicker, the temperature rising will be bigger. The temperature rises rapidly in the previous blanking processes, then reaches an equilibrium state，which is in accordance with the actual experiment. The temperature field with fine blanking process can be effectively predicted by using the finite element method.

Funds：

国家科技重大专项“高档数控机床与基础制造装备”(2009ZX04014-073-04)

曹传亮(1986-)，男，博士研究生

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