Transactions of Materials and Heat Treatment

Title：Cyclic load analysis on multilayer metal hot forging die during hot forging

Authors： Wang Huajun Yao Liang Lu Jianfei Peng Junbo

Unit： Wuhan University of Technology

KeyWords： continuous hot forging cyclic temperature cyclic stress multilayer metal hot forging die

ClassificationCode：

year,vol(issue):pagenumber：2015,40(10):1-4

Abstract：

When the hot forging die forged continuously, its surface occurred failure and crack due to the sharp changing of mechanical load and hot load. Multilayer metal hot forging die was applied to alleviate the hot loading, improve the properties resistance to high temperature abrasion and the life of the thermal-mechanical fatigue. For the forged spur gear, the cyclic temperature field and stress distribution of the uniformity forging die and multilayer metal hot forging die during the continuous forging was obtained by the FEM and calculation model. The results show that comparing with the traditional hot forging die, the multilayer metal hot forging die, whose surface is coated by cobalt alloy and whose transition layers are high-speed steel, can modify the temperature and the stress distribution of the die surface effectively. To a certain extent, its mechanical properties during the working are discovered.

Funds：

国家自然科学基金资助项目(51475346)

王华君(1970-），男，博士，副教授

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