rheocasting

rheocasting

[′rē·ō‚kast·iŋ]
(metallurgy)
A process in which a liquid metal is vigorously agitated during initial stages of solidification to produce a globular semisolid structure which remains highly fluid when more than 60% solidification has occurred.
References in periodicals archive ?
PROCESS OVERVIEW II-51 Sand Casting II-51 Green Sand Casting II-51 Skin Dried Casting II-51 Floor and Pit Casting II-51 Dry Sand Casting II-52 Chemical Setting Systems II-52 Precision Casting II-52 Permanent Mold Casting II-52 Cosworth Process II-52 Investment Casting II-53 Semi-Precision Casting II-54 Shell Mold Casting II-54 Plaster Mold Casting II-54 Ceramic Mold Casting II-54 Centrifugal Casting II-54 The V-Process II-55 Innovative Casting II-55 Daimler-Benz Innovates New Casting Process II-55 FM Process II-55 Squeeze Casting II-55 Rheocasting and Thixomolding II-56 Steel II-56 Iron II-56 Die Casting II-56 Benefits of Die-casting II-57 Casting Procedure II-57 5.
The rheocasting process typically involves the rapid cooling of an alloy and applied convection (stirring) to create non-dendritic semi-solid slurries for casting a wide selection of alloys.
Metal matrix composites have been manufactured by various techniques such as powder metallurgy, spray deposition and several casting methods such as rheocasting, squeeze-casting, stir-casting and compo-casting, but there exist some challenges in manufacturing the discontinuously reinforced metal matrix composites.
However, an alternative cliecasting process--semi solid rheocasting (SSR), developed by the Idra Group SRL, Travagliato, Italy, and based on a Massachusetts Institute of Technology patent--has been effective in improving metallurgic casting quality without increasing costs.
The contributions range from the development of novel alloys to the experimental and theoretical characterization of their properties, from classic to advanced casting methods such as rheocasting and thixoforming, and from post-processing of magnesium alloy components to their use on the industrial scale.
Thixo- and Rheocasting of Aluminum and Ferrous Materials
PROCESS OVERVIEW II-40 Sand Casting II-40 Green Sand Casting II-40 Skin Dried Casting II-40 Floor and Pit Casting II-40 Dry Sand Casting II-41 Chemical Setting Systems II-41 Precision Casting II-41 Permanent Mold Casting II-41 Cosworth Process II-41 Investment Casting II-42 Semi-Precision Casting II-43 Shell Mold Casting II-43 Plaster Mold Casting II-43 Ceramic Mold Casting II-43 Centrifugal Casting II-43 The V-Process II-44 Innovative Casting II-44 Daimler-Benz Innovates New Casting Process II-44 FM Process II-44 Squeeze Casting II-44 Rheocasting and Thixomolding II-45 Steel II-45 Iron II-45 Die Casting II-45 Benefits of Die-casting II-46 Casting Process Characteristics II-46 Casting Procedure II-46
A Rheocasting Route: SLC + CRP, A Marriage of Unique Processes
This new process does not use billets, but instead cools the molten metal to a semi-solid state at the same site as the die, eliminating the need to transport the slurry from the sod-maker to the die as in regular rheocasting.
Semi Solid Processing of Hyper-Eutectic Alloys via Rheocasting (04-057)
has recently developed a rheocasting machine that allows the production of castings on conventional diecasting machines that were previously only produced by permanent mold or squeeze casting.