Research On Mathematical Simulation Theory And Powder Extrusion Forming Technology Of Multi-Core-line-Die

A new forming method, which is Multi-Core-Line-Die Powder Extrusion (MCLDPE), of low cost metallic carrier is firstly presented in this paper. Correlative research on metallic carrier forming is investigated by this method. There are three aspects foundation pursuits, comprising ?To select and design metallic carrier materials (2) Technique flow , die designation and mechanic parameters of Multi-Core-Line-Die Powder Extrusion Forming and (3) To probe into finite element method (FEM) mathematical simulation theory of powder-compact extrusion forming.Powder extrusion of pure Aluminum and Aluminum-Iron powder is detailedly studied. Extruded powder deformation behavior is theoretically analyzed. Three periods in powder extrusion are different from routine extrusion. Rudimental technique flow comprises blended powder → keeping humidity → previous press → sinter → disposal. Metallography, XRD, density and heat expand parameter are also investigated at length. Correctness of materials designation of porous metallic carrier, predominant performances of metallic carrier are elementarily proved.In mathematical simulation theory, stress-strain relation of powder-compactdeformation , equivalent strain velocity equation , and unitary matrix equation ,are deduced.Therefore, feasibility of Multi-Core-Line-Die Powder Extrusion Forming is validated by Research on Mathematical Simulation Theory and Powder Extrusion Forming Technology of Multi-Core-Line-Die, which is a better forming method of metallic carrier. Basal experimental data and theory analysis are foundations for further research on Multi-Core -Line-Die Powder Extrusion Forming.