Metal Alloy Injection Molding

摘要

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.

主权项

1. An apparatus comprising:
an injection device configured to output a metal alloy under pressure; a molding device having a plurality of molding portions that form a cavity that defines an article to be molded using the metal alloy; a vacuum device coupled to areas of the molding device configured to reduce air pressure within the cavity of the molding device, the areas to which the vacuum device are coupled are disposed as substantially opposing a plurality of sub-runners; and an injection distribution device that physically couples the injection device to the molding device using a runner that is configured to receive the output of the metal alloy from the injection device and the plurality of sub-runners that are configured to receive an output of the runner and provide that output to the molding device, the plurality of sub-runners having an overall cross section that at least approximates a cross section of the runner.