Abstract
The paper presents preliminary studies of a new innovative surface treatment method—the process of roller burnishing of macro-irregularities of the surface. As part of the work, the possibility of plastic shaping of the surface macrostructure with indentations (plateau structure), which will show anti-wear properties through appropriate surface shaping and the compressive stress state in the product’s top layer, was investigated. The essence of the paper is the analysis of one of the aspects of the application of this processing method, i.e., the influence of the elastic recovery of the product on its technological quality measured by dimensional deviation. The main objective of the work is to develop adequate methods and mathematical models to enable the design of the macro-asperities of the surface burnishing process to maintain the dimensional tolerance of the shaped parts. The results of dependencies of elastic recovery of the asperities and the deviation of height, Δht, for sample depths of burnishing were presented. The model tests of the elastic recovery of the model material using the visioplasticity method show that with the increase of the value of the vertical surface asperities, the value of the elastic recovery of the material decreases. The increase of the deviation of the asperities’ height causes a decrease in the value of elastic recovery. With the increase of the value of the vertical angle of the surface roughness, the value of the elastic recovery of the material is smaller.
Highlights
Roller burnishing is used increasingly as a finishing operation [1,2,3,4,5,6]
It is known that the surface state after previous treatment has significant influence on its quality after roller burnishing [7,8]
Researches of the Phenomenon of Elastic Recovery Depending on the Vertical Angle of
Summary
Roller burnishing is used increasingly as a finishing operation [1,2,3,4,5,6]. It is known that the surface state after previous treatment has significant influence on its quality after roller burnishing [7,8]. In many papers, modeling and numerical analysis of the process were presented [25,26,27,28,29,30,31] but without considering the outline of the surface after previous treatment and material elastic recovery. ∆φ(E), the states of displacements, stresses, and strains in the tested object during and after the end while the elastic deformations will remain at the value φ(E) in the surface layer of the product.
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