engleski

Inner grinding of diesel engine's H.P. pump with correlation of highest uneven spots and ground surface's middle arithmetic roughness

In HP fuel pumps, inner surface grinding quality influence is essential for its exploitation characteristics. Monitored roughness is defined by two roughness parameters: maximum uneven spot heights and average arithmetical profile`s deviation from the middle line. Besides influence on exploitation characteristic, quality of ground surface also has influence on dynamic strength of the part, especially monitored in recess part, where it may create strain concentration. This is why a correlation between uneven spot`s maximum height (Rmax) and middle arithmetical profile deviation (Ra) must be known. This paper`s task is to investigate correlation Rmax and Ra for inner grinding of different materials, from which a rectilinear correlation of Rmax and Ra with a strong correlation connection is made. By using different materials, it is proven that material type does not influence this correlation.

inner surface grinding; surface roughness; exploitation characteristics

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