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1 Journal of Polish CIMAC

1 2012

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The analysis of geometric structure of the pins in marine angular momentum pumps shafts that underwent finish treatment

Labuda W., Charachalis A.

Journal of Polish CIMAC

2012

Vol. 7, no 1

141-148

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines , power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (lathing, grinding and burnishing) on the geometric structure of the surface of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi18-10 (AISI 304 L) stainless steel. The lathing process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1 - 80x10x32 - 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the geometric structure of the surface properties was determined. The paper will present the results of research related to roughness parameters, material ratio and surface waviness.