Publikacje

Abstract:

The aim of the article was to determine the impact of crushed condition (work hardening) on the effectiveness of the vibratory machining.
The vibratory machining processing was carried out in two steps. The first step consisted of mechanical abrasion and remove oxides from
the surface of the workpieces with abrasive media. While in the second step, smoothing - polishing with metal media was performed.
Vibratory polishing also strengthened the treated surfaces. The test results were compared for samples in the crushed state (work
hardening, plastic processing) and samples subjected to recrystallization annealing heat treatment. Mass losses, changes in the geometric
structure of the surface and changes in the hardness of the machining surfaces were analyzed. Samples subjected to recrystallization, as
compared to the samples in the state after work hardening-plastic working, are characterized by a slightly higher arithmetic mean surface
roughness and lower surface hardness than for analogous processes for samples not subjected to heat treatment. Heat treatment of
annealing allows to remove the effects of crushing and thus it is possible to obtain larger mass losses. Smaller burrs dimensions were
obtained for samples after the heat treatment – annealing than after work hardening.

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Influence of Cold Work on the Efficiency of Vibratory Machining