Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
Avaliação da resistência ao desgaste abrasivo e adesivo do aço ABNT 52100 de um rolo stretch bending revestido com WC-Co e NiCCr aplicado pelo processo HVOF
Submission Author:
Wender Oliveira , MG
Co-Authors:
Wender Oliveira, Jose Rubens Gonçalves Carneiro, DAVID PEREIRA, Isabelle Caroline Antunes de Souza
Presenter: Wender Oliveira
doi://10.26678/ABCM.CONEM2018.CON18-0434
Abstract
Cobalt tungsten carbide (WC-Co) and nickel chrome carbide (NiCCr) coatings are widely used to provide greater resistance to abrasive wear of carbon steel. In this work, the possibility of applying these two coatings in the ABNT 52100 steel from a stretch bending roll, with the addition or not of an intermediate layer of NiAl is evaluated, using the HVOF (High Velocity Oxy-fuel) thermal spray process, since it presents low thermal input and allows the possibility of applying a wide variety of coatings, such as non-metallic coatings. It is intended to evaluate the performance of the samples in situations of high abrasive wear, also evaluating the role of the intermediate layer to improve the adhesion of the coating to the substrate. For the evaluation of the resistance to abrasive wear and adhesive, the pin-on-disc test (ASTM G99-17) and tension test (ASTM E8E8M-16a), respectively, were used. The surfaces of the samples were also evaluated by optical microscopy and the hardness of each sample was also determined. With the tests, it was concluded that the samples with higher hardness and the presence of the intermediate layer have presented faults at the substrate interface with the coating and the resistance to abrasive wear did not deviate much from the values in the literature.
Keywords
HVOF, WC-Co, Pino sobre disco, ASTM G99, aço ABNT 52100, Stretch Bending
