Plasma 3D-Priting of Micro-Punch Array for Fine Embossing into Biomedical Titanium Works
Advances in Metallurgical and Material Engineering
Citation: Aizawa T, Shiratori T (2020) Plasma 3D-Priting of Micro-Punch Array for Fine Embossing into Biomedical Titanium Works. Adv Metallurg Mater Eng 3(1):95-103 Open Access | Page 95 | Vol 3 | Issue 1 | Pages 95-103 Abstract Biomedical titanium parts and tools required for tailored fine micro-textures to have their surface anti-bacteria. Formation of micro-grooves into a titanium plate by micro-embossing was the first step toward mass-production of titanium parts and tools with
... surfaces. Plasma 3D-printing was proposed to fabricate a micro-punch array to transcribe the micro-groove textures into titanium plate. This material processing consisted of three steps; 1) Micro-patterning of two dimensional micro-groove model onto the AISI316 die substrate, 2) Plasma nitriding to transform this micro-pattern to the hardness profile and 3) Mechanical removal of low hardness parts of die substrate. This plasma 3D-printing was free from mechanical machining and milling. Three micro-embossing punches with their arrayed heads were prepared by varying the punch head width of 50 μm, 10 μm and 5 μm, respectively. Each punch was inserted into an upper cassette die for micro-embossing the pure titanium plate with the thickness of 1 mm. Micro-groove textures were coined into the titanium plate to have their width of 50 μm and their pitch of 1 mm by using the plasma printed AISI316 punch on the route of screen printing. Finer micro-groove textures were transcribed to have their width of 10 μm and 5 μm respectively by embossing the plasma printed AISI316 punch on the route of the picosecond laser machining for micro-patterning.