Printed at ESMA with SLM technology in Ti64 on a Renishaw AM250. Heat-treated through Hot Isostatic Pressing (HIP) at Bodycote HIP.
Where initially cobalt-chromium alloys were selected as bio-compatible materials for medical implants, today these are commonly replaced by the much lighter titanium based alloy Ti64. By designing a scaffold structure on the inside, this hip implant becomes truly lightweight, yet remains as strong as a densely printed or machined part. But the main benefit is of course the possibility to entirely adapt the shape of the implant to the patient. To reduce friction, a ceramic coating has been applied on the ball joint.
Information and use cases:
By combining AM technology with CNC turning and milling, ESMA is able to manufacture complete products. ESMA used the Renishaw metal powder bed fusion technology, and is capable of printing in cobalt-chrome and titanium for dental, medical and industrial markets.
Renishaw’s Metal Additive Manufacturing allows parts to be built with few limitations in geometry. Living hinges, interlocking parts, thin wall and hollow objects are possible offering technological benefits, such as patient specific production and the ability to co-print both solid and porous structures promoting ingrowth into the human body. Renishaw is specialised in developing precision equipment to optimise production processes and maximise the output.
Metal and ceramic Additive Manufactured parts often require post-printing heat treatments and specialist thermal processing such as Hot Isostatic Pressing (HIP) to bring the mechanical properties of printed parts to their full potential. In HIP processing parts are subjected to sustained high temperatures and a very high inert gas pressure, resulting in the full removal of porosities. This typically leads to a significant increase of the component’s elasticity and life time.