STUDY ON DESIGN TECHNIQUES OF A LONG LIFE HOT FORGING DIE WITH MULTI-MATERIALS
来源期刊：Acta Metallurgica Sinica2007年第6期
论文作者：H.C. Wang X.J. Liu D.W. Li
Key words：hot forging die with multi-material; finite element analysis; thermal stress;
Abstract: A new design technique for the long life hot forging die has been proposed. By finite elementanalysis, the reason for the failure of hot forging die was analyzed and it was concluded thatthermal stress is the main reason for the failure of hot forging die. Based on this conclusion, thewhole hot forging die was divided into the substrate part and the heat-resistant part accordingto the thermal stress distribution. Moreover, the heat-resistant part was further subdivided intomore zones and the material of each zone was reasonably selected to ensure that the hotforging die can work in an elastic state. When compared with the existing techniques, this design cangreatly increase the service life because the use of multi-materials can alleviate the thermalstress in hot forging die.
H.C. Wang1，X.J. Liu1，D.W. Li1
(1.School of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070, China)
Abstract:A new design technique for the long life hot forging die has been proposed. By finite elementanalysis, the reason for the failure of hot forging die was analyzed and it was concluded thatthermal stress is the main reason for the failure of hot forging die. Based on this conclusion, thewhole hot forging die was divided into the substrate part and the heat-resistant part accordingto the thermal stress distribution. Moreover, the heat-resistant part was further subdivided intomore zones and the material of each zone was reasonably selected to ensure that the hotforging die can work in an elastic state. When compared with the existing techniques, this design cangreatly increase the service life because the use of multi-materials can alleviate the thermalstress in hot forging die.
Key words:hot forging die with multi-material; finite element analysis; thermal stress;
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