Which of the following processes uses sacrificial wax patterns to create sacrificial ceramic molds?

The process that uses sacrificial wax patterns to create sacrificial ceramic molds is investment casting. In this technique, a wax pattern is created, which is then coated with a ceramic material to form a mold. Once the ceramic mold is solidified, the wax is melted away, leaving a cavity shaped like the original pattern. This allows for highly detailed and complex shapes to be produced with a smooth finish, making investment casting particularly suitable for intricate parts, such as those found in the aerospace and jewelry industries.

Other processes such as die casting, lost foam casting, and sand casting do not specifically utilize wax patterns in the same way. Lost foam casting involves using a foam pattern that vaporizes when molten metal is poured, while die casting typically employs metal dies to form parts under high pressure. Sand casting involves shaping metal parts using sand molds, and neither of these techniques relies on the sacrificial properties of wax to create molds like investment casting does.