Reduce part variability and improve tolerance control with a new barrel heating system in which induction coils replace heater bands. Recent tests at Sabic Innovative Plastics in Pittsfield, MA, show that melt streams are exposed to less shear and have a more homogeneous melt temperature when injected into a mold cavity. The induction approach was developed recently by Xaloy, a screw and barrel producer based in New Castle, PA. The report was reviewed at Molding 2008 today in San Francisco.
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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