Tecnología del proceso de recuperación de ejes por aspersión térmica y su incidencia en la resistencia al desgaste adhesivo de revestimientos superficiales

Abstract

During the last years, the technological advance in Ecuador is the basis for the strengthening of the national industry, with the implementation of new manufacturing techniques, but some of the main problems are the high costs of importing mechanical components for their replacement, so the objective of this research is to propose the technology of the thermal spray shaft recovery process to evaluate the adhesive wear resistance of surface coatings, as a solution to the problem. The wear resistance behavior of SAE 1018 steel with the application of RotoTec- 29011, MetaCeram-28060 and Eutalloy-10009 coatings, applied by the thermal flame spray process, was evaluated. Samples of each material were evaluated to determine the hardness with and without coatings, and then wear tests were carried out in compliance with the conditions of the parameters established in procedure "A" of ASTM G 83-96. From these data, values were obtained for the volume of material lost and the wear coefficient for each material. The results of the tests indicate that the wear value is lower for the Eutalloy-10009 coating, while the RotoTec-29011 coating shows higher wear. In addition, a technical guide was established for the dimensional recovery of worn shafts by means of the thermal flame spraying process with Eutalloy-10009 surface coating, as well as a review of the technical specifications and parameters of the CastoDyn DS 8000 equipment, the sequence of activities and the technical and economic evaluation of the process.