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Can Use FFF Technology Make More Hard Metal Parts 3D Printing
Oct 25, 2018

Fraunhofer institute for ceramic technology and system (IKTS) researchers have found a way, you can use the fused deposition (FFF) manufacturing technology to make more hard metal 3D printing, this material from plastic processing industry.

Extremely hard tool is mainly used for mass production of automobile industry, carbide by adhesive nickel or cobalt metal and tungsten carbide hard phase.So far, cutting, drilling, stamping and punching tool using injection molding, cold isostatic pressing powder suppresses or production.Although the production time is short and precise control of material properties, but it usually requires complex and expensive post-processing.In addition, the use of powder compacting complex or specific design is extremely difficult.

On the contrary, the increase of material manufacturing can achieve complex geometry, but so far restricted in terms of hardness and size of parts.Adhesive spray 3D printing and thermoplastic 3D printing (DTP) has been successfully IKTS used in the production of metal parts.Through these methods, however, the production of components to use powder bed as solid fusion method in the production of parts, and metal binder content and the size of these components is limited.

Initially, the IKTS FFF process ceramics and composite materials.Their new experiments show that by using smaller metal particles in composite wires, they can achieve more hard to print.IKTS the researchers explained."For decades, the Fraunhofer IKTS has gained mature powder metallurgy professional knowledge.Therefore, can be used with cemented carbide powder production of organic binder FFF wire as needed.According to the structure of the material is different, can be used to reduce the grain size and binder content to improve the hardness of cemented carbide in particular, the compression strength and bending strength."

Wire can be used as a standard 3D printers of semi-finished products, and for the first time, you can print with extremely low metal binder content is only 8% of cemented carbide, fine grain size less than 0.8 microns, therefore can provide up to 1700 HV10 extremely hard components.