STUDIES AND INVESTIGATIONS ON THE POSSIBILITIES OF RECONDITIONING AN ECCENTRIC SHAFT

Abstract

Maintenance has an important role in the life of freezing equipment. Without maintenance different failings appear on the equipment, which lead to the wearing of these gears. In our case the semi-hermetic compressor suffered a failure because the oil got diluted by the freezing agent, which made the eccentric shaft fail. From a technical point of view, we can repair and recondition the compressor and the freezing compressor’s gears. The bibliographic studies recommend that metallization is the most optimal method of reconditioning the eccentric shaft, which we applied with success. But to prove it in a practical way, in this study we will study other types of reconditioning as well, besides metallization, that is: welding and application of Loctite adhesive kit. We could recondition the eccentrics axis with these types as well but in the first phase we want to prove that metallization was the most optimal solution from a technical point of view. Each method has advantages and disadvantages over their applications. First of all we’ll use these methods of conditioning on a test axis(specimen), according to STAS 11684/4-83 where we can define the unclearness of the methods through different concepts. Second we’ll try to apply shear stress/compression over the test axis. And in the end all advantages/disadvantages and the values we get will be evaluated.