Roller burnishing

About: Roller burnishing is a research topic. Over the lifetime, 395 publications have been published within this topic receiving 3322 citations.

Effect of burnishing on Inconel 718 workpiece surface heated by infrared radiation

Abstract: Roller burnishing process is a post-machining surface finishing technique that has an advantage over other finishing processes, such as shot blasting or abrasive-tooling processes, because of its s...

Roller-guided cutting tool

Abstract: A skiving and roller burnishing tool for finishing the internal surface of a cylindrical bore includes a cutting assembly and a pair of roller burnishing assemblies. Each roller assembly includes a plurality of frustoconical rollers mounted on a frustoconical bearing surface. By translating the individual rollers axially, the effective diameter of the outer surfaces of the roller can be changed. By applying a constant force on the rollers, the two roller assemblies hold the tool firmly in place inside the work piece, preventing accidental misalignment of the cutting tool. It has been found that this workpiece is particularly well suited for finishing relatively long bores.

Corrosion behaviour of c45 carbon steel after mechanical surface finishing

Abstract: The paper presents the results of research, concerning the increase of corrosion resistance of C45 carbon steel after the processes of mechanical surface finishing. In this stage of the research, the electrochemical studies of the corrosion rate were carried out by means of impedance methods. The electrochemical impedance spectroscopy (EIS) is modern, quick, and non-destructive method used to the study of corrosion rate. The samples were prepared by abrasive polishing using eight varying grit papers in the range from 180 up to 4000. Four representative groups of characteristic magnitudes of surface roughness were selected subject to the electrochemical investigations, with each measurement lasting 100 s. Two different media, based on sodium chloride as the corrosive agent, were applied for the electrochemical studies, with one of them imitating the synthetic sea water environment. The electrochemical investigation results revealed the effect of polishing operations and the grit abrasive paper used on the corrosion resistance of the carbon steel studied. The big number of results required a statistical approach, to make possible finding a direct relationship between the surface roughness after polishing and the corrosion rate. It was found that the corrosion rate may be decreased several times without using any corrosion inhibitor or protective coating. The next stage of the corrosion study is planned concerning the mechanical finishing treatment of the surface with the use of roller burnishing with electric current.

Deformation Mechanisms in Meta-Stable and Nitrogen-Stabilized Austenitic Stainless Steel During Severe Surface Deformation

Abstract: AISI 304L stainless steel in austenitized and in solution nitrided condition was severely mechanically deformed by surface roller burnishing. High-temperature solution nitriding was applied to achieve a nitrogen-concentration depth profile, leading to a depth-gradient in the austenite stability. X-ray diffraction, electron microscopy and hardness indentation were applied for characterization of the graded microstructures obtained by combining a composition profile and a deformation profile. While severe plastic surface straining of an austenitized specimen leads to a deformation-induced transformation of austenite into martensite, the solution nitrided specimen remains austenitic upon deformation, even in the region where nanocrystallization occurs. The deformation mechanisms operable in the nitrogen-stabilized austenitic stainless steel, i.e. twinning or dislocation glide, depend on the combination of applied plastic strain/strain rate, and the nitrogen-concentration dependent stacking fault energy.