2007
DOI: 10.4028/www.scientific.net/msf.539-543.1827
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Integral Foam Molding - A New Process for Foamed Magnesium Castings

Abstract: Integral foam molding (IFM) is an economical near net-shape technology to produce monolithic castings with solid skin, foamed core and continuous density transition between skin and core. It was developed for polymers in the 1960s. But it took about ten years to optimize the molding technique and the quality of the polymer integral foam parts to a marketable stage. Meanwhile, polymer integral foam parts are established in a lot of commercial applications. The situation is completely different for metals. The f… Show more

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Cited by 8 publications
(3 citation statements)
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“…Both foaming at 650 °C as well as the subsequent cooling occurs in an argon atmosphere. Enhancing the Mg integral foam-manufacturing by using low-pressure thixo die casting is described in [14,15]. Currently, the powder metallurgical method has only been realised at the Institute of Materials Science in Hannover and is schematically depicted in Fig.…”
Section: Manufacture Of Magnesium Foams By Means Of Powder Metallurgymentioning
confidence: 99%
“…Both foaming at 650 °C as well as the subsequent cooling occurs in an argon atmosphere. Enhancing the Mg integral foam-manufacturing by using low-pressure thixo die casting is described in [14,15]. Currently, the powder metallurgical method has only been realised at the Institute of Materials Science in Hannover and is schematically depicted in Fig.…”
Section: Manufacture Of Magnesium Foams By Means Of Powder Metallurgymentioning
confidence: 99%
“…Goldschmidt and Bühler call their product that has a dense outer skin and a porous core “Combal”, see Figure 6. The University of Erlangen presents Al and Mg foams: Thixomolding or cold chamber die casting machines are used to foam Mg alloys,112, 113 die casting machines to foam Al alloys 114. The blowing agent is MgH 2 in both cases.…”
Section: Foaming Metallic Melts Using Gas‐releasing Blowing Agentsmentioning
confidence: 99%
“…The resulting product is a monolithic casting with foam core covered by solid skin and continuous density transition between skin and core. [27,28] After melting magnesium, MgH 2 as a blowing agent is added to the melt. Subsequently, melt with the agent is injected at high velocity (15-20 m s À1 ) into the cavity.…”
Section: Melt Foaming Methodsmentioning
confidence: 99%