01. June 2021
GER - Newly patented manufacturing process of a tungsten alloy (WNiFe/WNiCu) enables additive manufacturing of complex components
Bayerische Metallwerke GmbH has developed a new manufacturing process for the tungsten alloys WNiFe and WNiCu and patended it in 2021.
Tungsten alloys (WNiFe / WNiCu) are used because of their corrosion resistance against molten metal and high thermal conductivity for chill-mould casting processing of aluminium. Yet, also in tool manufacture and for shielding from alpha and gamma radiation, the heavy metal with its density comparable to gold is indispensable. However, at around 3,400°C, tungsten has the highest melting point of all chemical elements and is therefore very difficult to work with, as well as due to its Mohs hardness of 7.5. As a result, components with more complex shapes, such as curves or conical bores, often have to be switched to hot-work tool steel, which is easier to form.