Experimental measuring procedure for wear and coefficient of friction of polymeric conveyor idlers

Pacholok, Daniel Estefano; Cousseau, Tiago; Kouketsu, Fernanda; Silva, Carlos Henrique; Martins, Diego de Cambraia

doi:10.26678/abcm.cobem2021.cob2021-1464

Cited by 1 publication

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“…The materials were subjected to scratching and drysand rubber wheel (DSRW) tests. The DSRW tests were performed using a modified apparatus based on the ASTM-G65-16 [23], which allows testing idler rolls annular segments as described in detail in [24]. This modification better simulates the field conditions observed for a halted idler roll.…”

Section: Methodsmentioning

confidence: 99%

Abrasive wear resistance of idler roll polymeric materials

Kouketsu¹,

Pacholok²,

Cousseau³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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Idler rolls are an integral part of belt conveyors. Even though idlers have been developed to perform adequately for various installations over the years, selecting the most appropriate one is not that clear. Idlers roll materials, more specifically the replacements of steel idler rolls for polymeric ones, have been a topic of significant interest. However, the use of polymeric material brings other challenges, in particular, presenting similar structural and abrasion resistance to steel. This works proposes a methodology using a rubber-wheel tribometer to evaluate the abrasion resistance of polymeric idler rolls in their most severe operating condition (halted idler roll) and defines a threshold limit based on the results obtained with steel idler rolls. The methodology was applied to 07 different polymeric materials. Aiming further understanding of materials abrasions resistance, scratching tests were performed, and the main wear mechanisms, verified by scanning electron microscopy (SEM) and abrasion factor (fab), were discussed along with the material properties and wear. The main conclusions were that some polymeric materials present abrasion resistance similar to steel rolls. The wear micromechanisms, verified by SEM and fab, are good indicators of abrasion resistance of the materials, but insufficient because they do not include fatigue effects resulting from multi-events and the additive fillers studied significantly altered the abrasive resistance of materials.

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Section: Methodsmentioning

confidence: 99%