A gaggle of South Korean researchers have additively manufactured a spherical titanium alloy high-pressure tank that passes a 330-bar check at -196°C.
The joint analysis staff – consisting of representatives of the Korea Institute of Industrial Know-how (KITECH), Korea Aerospace Analysis Middle (KARI), KP Aero Industries, AM Options, and Hanyang College – used laser-wire Directed Power Deposition (DED) know-how to fabricate the strain tank. It boasts a diameter of 640mm and a capability of 130 litres.
KITECH was answerable for growing the DED know-how, which makes use of a high-powered laser beam to soften titanium wire feedstock and construct elements layer by layer. To fulfill stringent aerospace dimensions and structural necessities, the researchers used this know-how to print two titanium hemispheres, earlier than becoming a member of them collectively by means of a sequence of warmth remedy, precision machining and welding. Actual-time monitoring utilizing sensor knowledge and optimised deposition path planning ensured dimension accuracy and structural integrity, whereas non-destructive analysis confirmed the absence of defects.
KARI then carried out a cryogenic proof strain check, cooling the tank to -196°C utilizing liquid nitrogen and pressuring to 330 bar – exceeding the tank’s operation strain requirement of 220 bar. In accordance with the researchers, pressure gauges, temperature sensors and visible monitoring programs verified efficiency in alignment with prior structural simulations. In addition they say that the usage of AM shortens manufacturing lead time and will allow fast customisation for various satellite tv for pc and launch car configurations. Transferring ahead, the analysis staff is aiming to pursue further qualification processes and associate with non-public house firms to commercialise the know-how.
Dr. Hyub Lee, Principal Researcher at KITECH, stated: “This achievement proves that additive manufacturing know-how is able to assembly the intense efficiency necessities demanded by house missions, opening new potentialities for aerospace element manufacturing.”
