A Description of the Wear Damage of Backhoe Bucket TeethPages 96-101
Juan Rodrigo Laguna-Camacho Abstract:
In this research work, a description of the wear damage caused on a backhoe bucket tooth of a Caterpillar model, is presented. This mechanical component was subjected to intense excavation work for approximately six months. The methodology to describe the tooth wear was to first section small segments of different damaged areas. Then, a tribological characterization was carried out to obtain the hardness in random places to determine what material, coating, or thermal treatment was used to manufacture and reinforced these mechanical components. Additionally, surface profilometry was employed to measure roughness and acquired wear profiles to gain insight into the degradation of bucket tooth surfaces after actual service. Finally, optical microscopy was used to identify the wear mechanisms involved in the surfaces. These mechanisms were severe and consistent pitting in different areas, large random grooves similar to those observed in severe abrasive wear (two-body, three body abrasion, gouging) high corrosion due to the environmental conditions, scratches and cutting actions on tooth surfaces.
Keywords: Backhoe bucket tooth, High abrasive wear, Corrosion wear, Wear mechanisms
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