Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Experimental measuring procedure for wear and coefficient of friction of polymeric conveyor idlers
Submission Author:
Daniel Estefano Pacholok , PR
Co-Authors:
Daniel Estefano Pacholok, tiago cousseau, Fernanda Kouketsu, Carlos Henrique Silva, Diego Martins
Presenter: Daniel Estefano Pacholok
doi://10.26678/ABCM.COBEM2021.COB2021-1464
Abstract
Polymeric idler rolls have been presented as an alternative to steel idler rolls to improve conveyor belt ore transportation system due to its low weight, which facilitates the maintenance of the production system. To assess the technical viability of using polymeric rollers it is necessary to estimate their durability. One relevant parameters to be evaluated is its abrasion resistance. The rubber wheel abrasion test, standardized by ASMT G-65, is an experimental procedure widely used to assess the abrasive wear resistance of materials. This work presents a study of different experimental procedures for polymeric roller abrasion tests with different sample geometries. Tests were carried out with prismatic samples, according to the standard geometry proposed by the ASTM G-65 standard; and also with segments of commercial idler rolls, nominated as ring samples. The ring samples were evaluated in two conditions: rotating and non-rotating. The rotating condition simulates the usual field operating conditions, while the non-rotating condition simulates the situation in which the idler roll is locked due to bearing failure. The tests with prismatic and non-rotating ring samples were performed with a normal force of 200 N during 10 minutes (1.420 meters); and the tests with rotating ring samples were performed with 250 N and 40 hours (3,4 x 10 ^ 3 meters). In all tests, ANB 100 sand was used. Worn surfaces were evaluated and compared to idlers that operated for 1 year in the field using SEM and contact profilometry. The wear values and wear mechanisms of the field and lab-tests idler roll materials point towards an improved method to evaluate idlers wear resistance.
Keywords
Rubber-wheel test, Three-body abrasion, Wear of polymers, Experimental Procedures
