Investment casting, also known as lost wax casting or precision casting, is a process that has been practiced for thousands of years, with the lost wax process being one of the oldest known metal forming techniques. Investment casting is a manufacturing process that can be traced back over 5,000 years ago. From then, when beeswax formed the pattern, to today's high technology waxes, refractory materials and special alloys, the lost foam castings ensure high quality components are produced with the advantages of accuracy, repeatability, and integrity.
Investment casting derives its name from the fact that the pattern is invested, or surrounded, with a refractory material. The wax patterns require extreme care for they are not strong enough to withstand forces encountered during the mold making. One advantage of investment casting is that the wax can be reused.
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