Methodology for the Selection of the Best Variant Between Double Coated Electrodes for Hardfacing

Keywords: Hardfacing electrodes, expert criteria, best variant, wear resistance

Abstract

This study aims to establish a methodology for selecting the best variant to be employed under certain conditions of a consumable electrode to address wear phenomena. In addition, it should combine the main parameters that can provide criteria for this purpose. As part of the methodology, some of the selected criteria include arc stability tests and tests to determine the consumption parameters of electrodes which assess their operational behavior. For the former, arc conductivity is calculated; and for the later, the deposition coefficient. Regarding the evolution of the deposit, we decide to measure wear resistance based on loss of mass using the pin abrasion test. The values obtained in these three tests are randomized and subjected to expert criteria. Then, the experts’ assessments are processed, and the weight they give to each parameter is estimated mathematically through regression equations. The variant with the external alloying charge is unanimously selected as the best double-coated electrode variant. The results of the analysis performed to choose the best variant suggest that wear resistance (assessed based on loss of mass) is the most relevant criterion for selecting electrodes intended for hardfacing parts.

Author Biographies

Odonel González Cabrera*, Centro de información y gestión tecnológica, Cuba

PhD. en Ciencias Técnicas, Centro de Información y Gestión Tecnológica, Santa Clara-Cuba, ogonzalez@ciget.vcl.cu

Carlos Rene Gómez pérez, Universidad Central “Marta Abreu” de Las Villas, Cuba

PhD. en Ciencias Técnicas, Centro de Investigaciones de Soldadura, Universidad Central “Marta Abreu” de Las Villas, Santa Clara-Cuba, crene@uclv.edu.cu

Uvedel Bernabé Del Pino Paz, Universidad Central “Marta Abreu” de Las Villas, Cuba

PhD. en Ciencias Físico Matemáticas, Facultad de Matemática, Física y Computación, Universidad Central “Marta Abreu” de Las Villas, Santa Clara-Cuba, uvedel@uclv.edu.cu

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How to Cite
Gozalez Cabrera, O., Gómez pérez, C. R., & Del Pino Paz, U. B. (2020). Methodology for the Selection of the Best Variant Between Double Coated Electrodes for Hardfacing. TecnoLógicas, 23(49), 72-80. https://doi.org/10.22430/22565337.1608

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Published
2020-09-15
Section
Research Papers