Metals 2012, 2(2), 136-142; doi:10.3390/met2020136
Article

Molding of Aluminum Foams by Using Hot Powder Extrusion

* email and email
Received: 29 March 2012; in revised form: 9 May 2012 / Accepted: 25 May 2012 / Published: 5 June 2012
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In order to form aluminum foams directly from powder, a combined process of hot powder extrusion and molding is proposed. Aluminum powder mixed with a foaming agent is extruded into the mold through the die heated to a temperature higher than the melting point, and the mold is filled with the aluminum foam. When a stainless steel pipe is used for a simple mold, an aluminum foam bar is obtained of which the relative density varies between 0.2 and 0.3. The molding of aluminum foam by using three types of mold shape shows the influence of gravity and friction. The effect of gravity is significant when a large step exists at the connection between the mold inlet and the die outlet, and friction is dominant in cases where foam is mold in a narrow space.
Keywords: porous metals; aluminum foam; hot powder extrusion; molding; density; gravity; friction
PDF Full-text Download PDF Full-Text [281 KB, uploaded 5 June 2012 11:19 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Shiomi, M.; Tanino, Y. Molding of Aluminum Foams by Using Hot Powder Extrusion. Metals 2012, 2, 136-142.

AMA Style

Shiomi M, Tanino Y. Molding of Aluminum Foams by Using Hot Powder Extrusion. Metals. 2012; 2(2):136-142.

Chicago/Turabian Style

Shiomi, Masanori; Tanino, Yoshitaka. 2012. "Molding of Aluminum Foams by Using Hot Powder Extrusion." Metals 2, no. 2: 136-142.

Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert