2025-09-232025-09-232025-09-12DEMETRIO, Heliardo Corrêa. Estudo sobre as diferentes ligas utilizadas em revestimentos metálicos das placas de chute na usina de Carajas-Pará. Orientador: Douglas Neves Garcia. 2025. 39, [1] f. Trabalho de Curso (Bacharelado em Engenharia Mecânica) – Faculdade de Engenharia Mecânica, Campus Universitário de Tucuruí, Universidade Federal do Pará, Tucuruí, 2025. Disponível em: https://bdm.ufpa.br/handle/prefix/8593. Acesso em:.https://bdm.ufpa.br/handle/prefix/8593This study focuses on mitigating wear in mining equipment, a problem that generates high maintenance costs and production losses. Tribology, which studies friction and wear, is the scientific foundation for this approach. The general objective is to conduct a literature review on the application of hard coating alloys in components such as transfer chutes, which undergo severe wear due to ore impact and abrasion. The work seeks to demonstrate how advanced materials can extend equipment lifespan, reduce costs, and increase operational efficiency. The methodology is based on the PDCA cycle (Plan-Do-Check-Act) and a bibliographic survey in indexed databases. Initially, articles were reviewed on the performance of tungsten- and tungsten carbide-based coatings, as well as the application of the PDCA cycle in mining. The HX900 plate, a material composed of nodular cast iron with tungsten carbide granules, was the main focus of analysis. Hardness data, wear rate, and impact resistance were compared between HX900 and other materials such as hardened steels and ceramics. The use of the HX900 plate in transfer chutes provides significant durability gains. Field tests in mining plants revealed that HX900 can outperform conventional materials such as Hardox 400 steel by up to 38 times in terms of service life. In addition to extending lifespan, the installation of the plate brought benefits such as reduced preventive maintenance and optimized ore flow. The microstructure of HX900, with its combination of hardness and toughness, aligns with WC-Co (tungsten carbide–cobalt) coatings and offers a superior balance to withstand both abrasion and impact. Furthermore, its production with recycled materials contributes to environmental sustainability. In conclusion, the application of tungsten-based coatings such as HX900 plates in transfer chutes proves to be a robust and efficient solution to wear in the mining industry. The combination of high hardness and toughness of the composite optimizes tribological performance, surpassing traditional materials. It is recommended to standardize the use of HX900 and conduct future laboratory tests to experimentally validate the predictions, promoting a continuous cycle of improvement and innovation in the sector.Acesso AbertoDesgasteMateriaisMineraçãoWearMaterialsMiningCNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::METALURGIA DE TRANSFORMACAO::SOLDAGEMTrabalho de Curso - Graduação - MonografiaAttribution-NonCommercial-NoDerivs 3.0 Brazil