Transactions of Materials and Heat Treatment

Title：Orthogonal analysis of forming property factors in cold extrusion process and application of inverse pressure technology

Authors： Beijing research institute of mechanical and electrical technology Zhang Lili Zhou Xinyu Dai Yingrong Zeng Qi Cao Fei

Unit：

KeyWords： Numerical simulation Orthogonal experiment method Extrusion Inverse pressure technology

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2003,28(6):16-18

Abstract：

The influence of friction of dies and punches, geometric fillets of dies and forging speed on the die filling degree and maximal load in the extrusion process is analyzed using the method of orthogonal experiments on the basis of FE analysis. To obtain better forming quality and lower press load these factors are optimized further. Applying inverse pressure technology to the forming process of a pump body, which results in the situation that the material is compressed from three orthogonal directions in the extrusion process, we find the higher die filling degree and the lower press load can be obtained with inverse pressure technology.

Funds：

国家自然科学基金资助项目 (59990 4 70 - 3)

Reference：

1　董湘怀,黄树槐,李志刚等塑性加工技术的发展趋势中国机械工程,2000,11(9)
2　胡国定,张润楚多元数据分析方法天津:南开大学出版社,1990:356～388
3　SIOh,WTWu,JPTang,AVedhanayagamCapabilitiesandapplica tionsofFEMcodeDEFORM :theperspectiveofthedeveloperJournalofMaterialsProcessingTechnology,1991,27:25～42

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