Investment Casting at PartsBadger
Investment casting, also known as lost wax casting, is the process in which a wax pattern is created and then that pattern is coated in a ceramic slurry to create the hardened mold for final casting. The term investment spawns from the process in which the wax pattern is coated with the ceramic slurry. After the coating hardens, the mold is placed into a high temperature oven to melt the wax out of the mold. In some cases the mold could be pressurized and steamed to remove any remaining wax. At this point the mold is preheated to remove moisture and allow the molten material being cast to fill all voids before cooling.
After the cast has fully cooled and hardened, the ceramic casing is either vibrated, hammered or broken off with a water jet. Secondary process such as polishing, deburring and additional machining can be completed once the casing is removed.
Investment casting is common practice in jewelry making but is not limited to small sizes. Parts ranging from a few ounces to hundreds of pounds can be suitable for investment casting. The size and complexity of features in the part determine the time and cost associated with the casting process. Investment casting can come in at a higher cost than other casting methods (sand or die casting) but yield much more precise results.
Materials for Investment Casting
Generally, any cast grade material can be used in investment casting. Stainless steel, carbon steel, alloy steel, tool steel, aluminum alloys, copper alloys, brasses and bronzes can all be used along with some exotics.
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Precision, Quality and Affordability at any volume
In addition to Investment Casting, our Modern CNC machines can handle small radius cuts and maintain a high quality level whether you want one piece or one hundred. Chamfered edges, multi radius curves, and tapped holes are a few things that make machining a part more workable for any projects. We take pride in making quality, custom, low cost, cast and machined parts.