FEM Simulation of the Compaction of Ductile Metal Powder.

 
Caso de Grupo SSC - FEM Simulation of the Compaction of Ductile Metal

Parts produced by powder technology (PM) have become increasingly important due to excellent results with small parts for the automobile industry. The number of steel parts made by PM for vehicles has grown significantly in the last seven years, and it is expected for this technology to keep substituting normal production methods. Examples of parts currently made are gears and pinions, hubs for cooling fans, timing pulleys, and synchronizer rings.

It is also possible to produce composite materials formed by metals non-soluble even in the liquid state, or with a mixture of metallic and non-metallic materials. Thus is the case of wear resistant materials such as the ones used in breaks and clutches were non-metallic abrasive particles are surrounded by a copper or another metallic matrix. Also related, the last years have seen the development of products containing a fine dispersion of non-metallic phases that achieve dispersion strengthening of the material (ODS materials).

In any process of powder compaction, the distribution of porosity is not easy to foresee and the mechanical behavior of the part is dependant on density distribution. That is the main reason to look for simulation models in finite element, which can predict in a qualitative or, even, quantitative way, the distribution of porosity and final properties of powder sintered parts.
Autor: Rafael Rodríguez Cruz., Roberto González Ojeda., Juan Carlos Llamas Negrete., Oscar León De Alba.
Procedencia: FIMEE

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