4Donati L, Tomesani L. The effect of die design on the pro- duction and seam weld quality of extruded aluminium profiles [J].Mater. Process. Technol., 2005, 164/165 (AMPT/ AminE05 Part 2) : 1025 - 1031.
5Flitta I, Sheppard T. Simulation of bridge die extrusion using the finite element method[J]. Mater. Sci. Technol. , 2002, 18: 987- 994.
6Asher D M. Extrusion Die and Method for Extruding Alu- minium: U. S. , Patent, No. 5095734 [P]. 1992.
7Nick M, Guy E, Alan M. Bearing lengths for extrusion dies: rationale, current practice and requirements for automation [J]. Journal of Materials Processing Technology, 1997, 72: 162 - 176.
8Arif A F M, Sheikh A K, Qamar S Z. A study of die failure mechanisms in aluminum extrusion [J]. Journal of Materials Processing Technology, 2003, 134: 318- 328.
