The wear resistance additive products derived from EED cobalt powder

Abstract

The main claim for powders for additive 3D technologies is a spherical shape of particles. Such particles are the most compact, packed in a certain volume and provide "fluidity" of the powder composition in the material supply systems with the least resistance. The wide use of the method of metal waste recycling into powders for their reuse and application in additive technologies is constrained by the lack of scientific and technical literature complete information on the impact of the original composition, modes and environment on the powder properties and practical application technologies. Therefore, comprehensive theoretical and practical researches are required to develop technologies for the reuse of electro-erosion powders and to estimate the effectiveness of their use. The aim of the work was to study the wear resistance of additive product samples, obtained from cobalt-chromium electro-erosion powder. The wear resistance of the samples was studied on a high-temperature tribometer manufactured by CCM tools. The friction coefficient (initial, maximum and average) is determined on the basis of the wear resistance assessment. The wear coefficient value of the statistical partner and the wear coefficient of the electric spark coating were also identified. The visual image of the wear trace and the wear groove profile of the electro-spark coating are shown.