Abstract
Typical industrial requirements regarding surface finish, appearance, and limits and fits for turned and cylindrically ground surfaces will be indicated from the results of a recent survey.
The results obtained during friction and wear tests on significantly sized surfaces (3 in square) will be described, with an indication of the problems associated with the adequate description of the topography of such surfaces.
The paper will also include observations on the types of surface finish now being produced during milling and reaming operations, noting the tendency to produce profiles having wavelengths which are larger than can be readily assessed using the majority of currently available workshop surface measuring instruments, and the problems associated with the evaluation of surfaces produced by other production processes, e.g. electrochemical machining, extrusion, etc.
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