Booming demand for aircraft and power generation plants is fueling higher requirements for a specialized investment casting process that creates complex hollow internal shapes. Use of molded ceramic cores allows turbine engine blades and vanes to be cast to size with complex cooling passages, permitting engines to operate at higher temperatures with greater efficiency. GE Aviation has a record number of engines on order through 2012, its third record year in a row. The cores are also used for turbines in natural gas power generation plants.
One of the beneficiaries is a company called Certech, which is the largest independent producer of ceramic cores for investment casting. Technology growth is in materials development. “We’re always looking for a better mousetrap to give a better yield to the customer,” says Michael Kasberg, vice president and general manager of Certech. “When they pour metal around our parts sometimes they want to pour hotter metal. As a result you need a ceramic that won’t melt when it sees a higher temperature. “
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
Plastic bags can become useful as either raw materials for plastics or feedstock for fuel. It's when they're not recycled that they become a major problem. That's what California's bag ban will prevent.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.