TRIBOLOGICAL STUDIES AND ANALYSIS ON PISTON OF HERMETICALLY SEALED COMPRESSOR

Abstract

In this project analysis of hermetically sealed compressor is done using linear reciprocating tribometer, the analysis of wear is carried out in the cylinder piston unit of hermetically sealed compressor. Moreover a new material is casted and tested using LRT the results of wear, frictional forces, coefficient of friction is obtained and graph is plotted. The results of the existing material are verified against the newly developed material, and analysis of results been done. The optical structure of sample is viewed using Scanning Electron Microscope (SEM) technique. The microscopic images shows mixing of grains of different elements. The percentage composition of material is computed using Energy Dispersive X-Ray Spectroscopy (EDAX), the composition is seen over a spectrum (region), peaks of elemental composition is plotted in the form of graph. Tabular representation of data is also done for computational purpose. The results of wear obtain are the optimized using Taguchi method and the deviation of wear from mean values is noticed. Deviation in wear is computed on parameters like load, time, temperature and graphs of respective are formed against wear. The specimen is then tested for hardness in a hardness tester, the probe of tester is touched at different points and value is computed.