Bibliographic citations
Llanos, L., (2023). Integridad estructural de las herramientas de corte recuperadas mediante proceso SAW del cargador frontal 938G para mejorar la vida útil [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/19657
Llanos, L., Integridad estructural de las herramientas de corte recuperadas mediante proceso SAW del cargador frontal 938G para mejorar la vida útil []. PE: Universidad Nacional de Trujillo; 2023. https://hdl.handle.net/20.500.14414/19657
@mastersthesis{renati/1044666,
title = "Integridad estructural de las herramientas de corte recuperadas mediante proceso SAW del cargador frontal 938G para mejorar la vida útil",
author = "Llanos Sánchez, Luis Miguel",
publisher = "Universidad Nacional de Trujillo",
year = "2023"
}
In this research work, an analysis of the structural integrity of a cutting tool (nail) recovered from the 938G-CAT front loader has been carried out, through the SAW process using 3.2 mm EL12 wire consumables and R35Mo fluxes, with justifiable fines to improve the useful life of the cutting tool (nail), in the field of heavy machinery. The reconstruction process consisted of taking a cutting tool discarded by the maintenance area due to the end of its useful life due to excessive wear, which was treated and rebuilt from high alloy steel T-500 road material with thickness of 13 mm with a hardness of 475-505 HBW, wear-resistant with the shape and dimensions of the original nail, it was subsequently coated with a layer, by SAW submerged arc welding process using consumables, wire type EL- 12 of 3.2mm and R35Mo flux, for this the welding parameters recommended by the manufacturer were adjusted, 350 Amperes, 30 Volts and advance 30cm/min. To carry out the analysis of the structural integrity of the recovered cutting tool, the experimental method was used to determine the mechanical properties; tests were carried out on the recovered cutting tool with welding; such as hardness according to the ASTME18 and ASTME92 standards, impact test, tensile test, wear resistance test according to the ASTM G-65 standard, as well as the chemical composition of the filler material was determined. carried out in the Materials Engineering Laboratories of the National University of Trujillo (UNT). Subsequently, computer analysis and simulation software was used to determine the state of stress, deformation and safety factor using SolidWorks Simulation ® software in the computer laboratory of the Universidad Politécnica Amazónica UPA, to determine the damage caused, number of cycles of life and safety factor of the cutting tool recovered with solder (nail). The applied loads were determined using experimental ground penetration tests considering different types of soil such as rocky, stony, clay, and fill material; Through the present study it allowed us to reconstruct a cutting tool (nail) that had completed its life cycle, enhancing its mentioned properties. In which the hardness was improved by 22% (56 RC) compared to the original DH-3 material (45.8RC). Due to the improved mechanical properties of the recovered cutting tool (nail), the useful life was increased around of 4 months according to the fatigue analyzes carried out in the SolidWorks Simulation software according to the proposed conditions (table N°40). According to the wear rate of 0.0144 g/min, it was estimated that the wear life was increased by around 4.2 months according to the proposed conditions.
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