Electron Beam Powder Bed Fusion (EB-PBF) is one of the most relevant additive manufacturing technologies for producing Titanium components. Over the years, EB-PBF has had several application in the aerospace and biomedical fields thanks to the possibility of producing components with complex geometry and an excellent quality materials: all these features would be difficult to obtain with other production technologies. The process starts with a pre-heating step: the powder in the start plate is completely pre-heated by a series of passages of the defocused electron beam at low power and high speed. This step is really important by providing the formation of circular necks that connect the particles, increasing the thermal conductivity of the powder bed.