Optimizing the Formation of Hydraulic Cylinder Surfaces, Taking into Account Their Microrelief Topography Analyzed during Different Operations

Causes of the in-service damage to hydrocylinder liners were investigated, and the requirements to their working surfaces were systematized. Roughness parameter Ra was found not to provide a precise estimate of the surface quality because its reduction did not affect surface microgeometry. Additiona...

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Bibliographic Details
Published in:Machines (Basel) 2021-06, Vol.9 (6), p.116
Main Authors: Dzyura, Volodymyr, Maruschak, Pavlo
Format: Article
Language:English
Subjects:
Burnishing
cylindrical surface
Design
Finishing
Friction
hydrocylinder
Linings
Manufacturing
parameter
Parameters
quality
Quality assessment
roughness
Steel
Surface properties
Surface roughness
Surface structure
Topography
Turning (machining)
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Summary:Causes of the in-service damage to hydrocylinder liners were investigated, and the requirements to their working surfaces were systematized. Roughness parameter Ra was found not to provide a precise estimate of the surface quality because its reduction did not affect surface microgeometry. Additionally, the surface quality was assessed by the Abbott-Firestone curve during the finishing operation. The optimized manufacturing technology for obtaining hydrocylinder liners was offered based on having the required microgeometry and surface quality provided by cutting operations. The quality and service characteristics of internal surfaces of hydrocylinder liners were improved by changing technological operations. In particular, the semi-finish turning was chosen to provide for the surface roughness parameter Ra within 6.3–8.0 μm and the roughness pitch parameter S within 0.4–0.6 mm and homogeneous surface structure. The finishing rolling was replaced by burnishing to form a regular microrelief.
ISSN:2075-1702
2075-1702
DOI:10.3390/machines9060116