Diseño y manufactura de un bloque motor mono cilíndrico para una motocicleta de 150C.C. con una aleación de aluminio 7075.

Abstract

Design the engine block by using the CAD software (Computer Aided Design) to manufacture the 150 C.C. engine block, considering the manufacturer's technical specifications. By using a 7075 aluminum alloy, because it has adequate mechanical and chemical properties with a melting range of (475 - 630) ° C. For the casting of the engine block, a mold was constructed using CAD software, and after the design, print it in 3D. Which used a mold in silica sand combined with a binder called sodium silicate, to harden the mold was injected C02 (carbon dioxide), the aluminum casting was performed in a crucible furnace which was heated to an average temperature of 850 ° C and then make the alloy by the contribution of metals such as Zinc (5.1 -6.1)%, Magnesium (2.1 -2.9)%, Copper (1.2 - 2)% and small percentages of silicon , iron, manganese, chrome and titanium, obtaining a 150 cc motorcycle engine block, functional. It was concluded that it is feasible to manufacture vital parts and engine parts in the country, but because it is a prototype the cost is high, but when producing in series the value will decrease significantly. It is recommended to perform the software design of a spare part, it is necessary to have well-established measures taking into account that the design of the mold is slightly larger than the actual one, at the time of making an alloy remember the temperatures of each alloying element since it is necessary to obtain a good final alloy.