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AssigneeMicrosoft Corporation
InventorsPaul C. Bornemann, Raj N. Master, Michael Joseph Lane, Seah Sun Too
Estimating the term…
Metal alloy injection molding techniques are described. In one or more implementations, these techniques may also include adjustment of injection pressure, configuration of runners, and/or use of vacuum pressure, and so on to encourage flow of the metal alloy through a mold. Techniques are also described that utilize protrusions to counteract thermal expansion and subsequent contraction of the metal alloy upon cooling. Further, techniques are described in which a radius of edges of a feature is configured to encourage flow and reduce voids. A variety of other techniques are also described herein.
A method comprising:
A molding device comprising a mold having a plurality of molding portions that define a cavity that corresponds to an article to be molded using a metal alloy that is injected into the mold, the mold defining a cavity that corresponds to an article to be molded, the article having walls with a thickness of less than 0.7 millimeter with a feature disposed on a wall of the housing, the feature a leading edge of thirty degrees or less and a trailing edge of more than thirty degrees, the leading and trailing edges of the feature defined in relation to flow of the metal alloy through the cavity during injection.
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A method comprising forming a mold comprising a plurality of molding portions to form an article using a metal alloy comprised primarily of magnesium by defining a cavity to shape a housing for a computing device in a hand held form factor having walls with a thickness of less than one millimeter, a feature defined on a wall of the housing using a leading edge of thirty degrees or less and a trailing edge of more than thirty degrees, the leading and trailing edges of the feature defined in relation to flow of the metal alloy through the cavity during injection.
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Dependencies are inferred from the claim text.