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University of Pittsburgh and General Carbide awarded $57K to research 3D printing with tungsten

University of Pittsburgh and General Carbide awarded $57K to research 3D printing with tungsten

Written by David

January 8, 2019

The Department of Community and Economic Development has awarded a $57,000 grant to the University of Pittsburgh and General Carbide Corporation to investigate effective methods of 3D printing with tungsten carbide powders. Laser sintering technologies that work well on steel and titanium alloys cause tungsten to crack; tungsten is susceptible to fractures when exposed to extreme temperature gradients. “Additive manufacturing is increasingly adopted by industry to build highly complex metal parts, but the rapid local heating and cooling during energy beam-based 3D metal printing produces large thermal gradients which cause tungsten carbide to crack,” said Markus Chmielus, assistant professor at Pitt. “Binder jet 3D printing is more effective because it selectively joins powder particles with a binder, one microscopic layer on top of another and without any temperature fluctuations during printing.” The binding method requires annealing the part in a high-temp oven after it’s 3D printed, which doesn’t create […]

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