12 Facts About Investment casting

Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques.

Investment casting is valued for its ability to produce components with accuracy, repeatability, versatility and integrity in a variety of metals and high-performance alloys.

Lost-foam casting is a modern form of investment casting that eliminates certain steps in the process.

Investment casting is so named because the process invests the pattern with refractory material to make a mould, and a molten substance is cast into the mold.

Investment casting can produce complicated shapes that would be difficult or impossible with other casting methods.

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Vacuum pressure Investment casting, properly referred to as vacuum assist direct pour, uses gas pressure and a vacuum to improve the quality of the Investment casting and minimize porosity.

The most common materials for vacuum Investment casting process are the high nickel-based alloy and super alloys.

Investment casting came into use as a modern industrial process in the late 19th century, when dentists began using it to make crowns and inlays, as described by Barnabas Frederick Philbrook of Council Bluffs, Iowa in 1897.

Investment casting formulated a wax pattern compound of excellent properties, developed an investment material, and invented an air-pressure casting machine.

Investment casting is used in the aerospace and power generation industries to produce turbine blades with complex shapes or cooling systems.

Blades produced by investment casting can include single-crystal, directionally solidified, or conventional equiaxed blades.

Investment casting is widely used by firearms manufacturers to fabricate firearm receivers, triggers, hammers, and other precision parts at low cost.