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Posts sent on: 2015-12-21

21 Dec 2015 
So as to form metal foams directly from powder, a combined process of warm powder extrusion and molding is proposed. Aluminum powder mixed with a foaming agent can be extruded into the mold through the die heated to a temp greater than the melting stage, and the mold is going to be filled with the aluminum foam. When plastic extruders a stainless metal pipe can be used for a simple mold, an aluminium foam bar is attained of which the relative density varies between 0.2 and 0.3. The molding of lightweight aluminum foam through the use of three types of mold condition shows the influence of gravity and friction. The result of gravity is undoubtedly significant when a significant step is present at the connection between the mold inlet and the die outlet, and friction is without question dominant where foam is definitely mold in a narrow space.
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