Vibration-Assisted Ball Burnishing

Abstract

Vibration-Assisted Ball Burnishing is a finishing processed based on plastic deformation by means of a preloaded ball on a certain surface that rolls over it following a certain trajectory previously programmed while vibrating vertically. The dynamics of the process are based on the activation of the acoustoplastic effect on the material by means of the vibratory signal transmitted through the material lattice as a consequence of the mentioned oscillation of the ball. Materials processed by VABB show a modified surface in terms of topology distribution and scale, superior if compared to the results of the non-assisted process. Subgrain formation one of the main drivers that explain the change in hardness and residual stress resulting from the process.

Experimental validation of ball burnishing numerical simulation on ball-end milled martensitic stainless-steel considering friction and the initial surface topography

“…Ball burnishing process on the surface was performed by means of a CNC router milling machine. The burnishing tool protected by Spanish patent number 201730385 commercially known as Acoustomill [41] was used by adapting a 10 mm diameter hardmetal ball in the force transmission unit. The initial burnishing load and the number of passes were selected according to the referential conditions used in the preceding study settled by Amini et al on ferritic milled surfaces [3].…”

Influence of the Stainless-Steel Microstructure on Tribological Behavior and Surface Integrity after Ball Burnishing

“…Nevertheless, due to the low hardening coefficient and high hardness conferred by the martensitic matrix, UNS S46500 required a load increase in contrast to AISI 316. The ball-burnishing process was performed using a hard, metal ball with a 10 mm diameter adapted to the force transmission unit of the Acoustomill tool (Spanish patent number 201730385) [27]. The process setup and its descriptive scheme are shown in Figure 2.…”

Evaluating Some Functional Properties of Surfaces with Partially Regular Microreliefs Formed by Ball-Burnishing

“…The prospects for obtaining a structured surface by means of burnishing were addressed in [25]. The main advantages of this technique were highlighted, along with the difficulties encountered when designing this technique.…”