Per: Victor Barbosa de Souza (uenf), João Vitor Moreira Pinto (redentor), Itamar Brandão Sanguir (redentor), Amanda Camerini Lima (redentor), Vinicius Lopes Silva (redentor), Markssuel Teixeira Marvila (uenf), Afonso Rangel Garcez de Azevedo (uenf), Euzébio Bernabé Zanelato (uenf), Sergio Neves Monteiro (ime)
Abstract:
The loaders are large functional elements, being used mainly in earthworks and mining. Among its components, we highlight the loader blade, in which it will be evaluated in detail in the present study. The blade loader, in particular, has the function of facilitating the transport of efficient and effective way through its mechanisms. Due to the working characteristic, the implement must be made of materials whose strength and durability are considerable, such as STEEL 1080. However, the stresses caused on the blade cause it to wear prematurely, which justifies this research. In this way, a hardness test was performed on the slide on several types of cooling (ice, oil and brine) in order to evaluate which medium would result in a higher hardness value. Toughness. Through an average resulting from successive measurements, the hardness resulted in a hardness of 29.30 HRc. Subsequently, a tempering process was performed on the slide, at a temperature of 940 ° C for 3 hours, by cooling the material in water in the solid state, in oil and brine, in order to observe which would provide a higher hardness index and resistance to wear. After the procedure, the material was again subjected to a hardness test in order to determine if there was success in the heat treatment, where a maximum hardness was obtained between the 60.50HRc cooling found in the ice cooling. It can then be concluded that there was a satisfactory result with the tests, since they increased the hardness of the initial material by about 99%, comparing the highest hardness index
