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IEEE ARTICULO definitivo

Abstract

— The objective of this work (Project) was to determine the average hardness in 20 cylindrical samples of steel AISI 1045 and AISI 4140, which after being subjected to a tempering treatment by two different methods (brine, water), a hardness test Rockwell at random and also used in a statistical experiment designed where factors such as, type of steel and method of cooling, allowed to make a comparison to determine which of the steels shown more apt an had the highest coefficient of hardness for the manufacture of crankshaft. Then, with the result than shown H0 was approved, that was contradictory to the expected since the hardness of the steels depends on the cooling method and the type of steel, these results could have been influenced by annoying factors such as: the time of Cooling of the parts, the origin of the samples and the sanding of the surface where the hardness test is performed; However, the average hardness of the steel types combined with the two cooling methods were higher than the standard hardness value of a manufactured crankshaft which is 45 HRC, thus concluding that both steels are suitable for the manufacture of said part..