| 2022 №02 (02) |
DOI of Article 10.37434/tpwj2022.02.03 |
2022 №02 (04) |
The Paton Welding Journal, 2022, #2, 16-25 pages
Additive electron beam technology for manufacture of metal products from powder materials
V.A. Matviichuk, V.M. Nesterenkov, O.M. Berdnikova
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
Abstract
The aim of the work is to create additive electron beam technology for layer-by-layer manufacture of metal parts from powder materials. To carry out investigations, an experimental model of additive equipment was made, a software and hardware platform for additive manufacturing was designed, technological methods and modes of printing products of a set shape with predicted strength properties were invented. Applying the additive method, 25 experimental samples for further tests were printed. For each of the products, the speed of beam movement, its power and dynamic focusing current were determined. The influence of basic parameters of the technological process of surfacing on the formation and features of the surface structure and chemical composition of the samples were studied. It was found that the chemical composition of products corresponds to the composition of raw materials except for the content of aluminium, which is underestimated by 0.6‒1.96 % relative to the chemical composition of the powder. To eliminate this drawback, it is necessary to maintain the aluminium content in titanium alloy powders at the highest level. According to the results of investigations in the created equipment, according to computer models, the products of industrial and medical purpose were printed, the printing modes of which are optimized. From the powders of titanium alloys, the models of stator blades of a gas turbine aircraft engine, human skull implant and bioprosthesis were manufactured.
Keywords: additive technologies; 3D printer, electron beam surfacing, metal powder, titanium alloy, chemical composition, surface microrelief
Received: 13.12.2021
Accepted: 31.03.2022
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