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Cast versus forged engine pistons
Design & Technology
Pages 5 (1255 words)
Student name Lecturer name Course Date Cast versus forged engine pistons The suitability of structural materials is largely determined by the physical properties as well as the mechanical properties of the metal. Physical properties are only influenced by the chemical composition of the material while the mechanical characteristics are governed not only by the chemical composition but also by the microstructure of the metal.
Centrifugal casting has been used for the production of cylindrical parts since time immemorial. The two types of machines used to achieve these are broadly classified as horizontal and vertical types. The horizontal ones are named so because they usually rotate around a horizontal axis while the vertical ones rotate around a vertical one. The horizontal machines are typically used to make pistons and other castings that are simple in shape. The vertical machines are best suited for making castings that are not regular in shape (Soares, 22). The importance of pistons can not be bargained. In a typical engine, pistons are used in order to convert the thermal energy into mechanical energy. Pistons are used to convey the gas forces through the linking rods to the crank shaft. They are also used in order to seal off the combustion part against the possible gas leaks in the crankcase. In addition to preventing leakages, they also help to avert any possible infiltration of oil that might emanate from the crankcase into the combustion part of the system. Last but not least, pistons are used to release the heat absorbed as a result of the combustion thereby assisting in the function of the cooling oil. ...
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