| 摘要 |
<p>The invention relates to a method for roll-burnishing intended to introduce superficial compressive stresses into metallic parts. In accordance with the invention, the surface finish of the zone of the part (P) which is to undergo the roll-burnishing is first measured, and the width of the roller (G) to be used for the roll-burnishing is deduced therefrom; next, the roller thus selected is positioned on the tool holder (PO), at the end of the associated flexion bar; this roller thus put in place is then applied against the part (P) by exerting, on the said roller, a predetermined load which is a function of the desired superficial compressive stresses; the aforementioned roller is finally used to proceed with the actual roll-burnishing of the part (P). The roll-burnishing process according to the invention is particularly advantageous in the case of wheels made from lightweight alloy, for example made from aluminium or from magnesium. <IMAGE></p> |
