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 roller burnishing on pure aluminum alloyed by copper

Abstract: Purpose – The purpose of this paper is to review, analyze and present the effects of the roller burnishing process on pure aluminum alloyed by pure copper at 3%, 6% and 9% percentages. Roller burnishing is one of the effective finishing treatment methods in terms of stabilization of surface layers properties along the depth, Roller burnishing is one of the effective methods used to improve the surface layer properties such as microhardness and average surface roughness.Design/methodology/approach – Three different Al‐Cu alloys of 3%, 6% and 9% copper additions were prepared and microstructure, micro hardness and mechanical properties investigated. Then the roller burnishing mechanism was applied on Al‐Cu alloys on cylindrical work pieces, different conditions were used, and the results were obtained and discussed.Findings – The best enhancement in hardness was 46.4% which was achieved at 9% Cu addition, whereas the best enhancement in the flow stress was 101.8% which was achieved at 9% Cu addition. Applyi...

A method of increasing the depth of the plastically deformed layer in the roller burnishing process

Abstract: The subject of this paper is an analysis of the determination of the depth of the plastically deformed layer in the process of roller burnishing a shaft using a newly developed method in which a braking moment is applied to the roller. It is possible to increase the depth of the plastically deformed layer by applying the braking moment to the roller during the burnishing process. The theoretical considerations presented are based on the Hertz-Bielayev and Huber-Mises theories and permit the calculation of the depth of plastic deformation of the top layer of the burnished shaft. The theoretical analysis has been verified experimentally and using numerical calculations based on the finite element method using the Msc.MARC program. Experimental tests were carried out on ring-shaped samples made of C45 carbon steel. The samples were burnished at different values of roller force and different values of braking moment. A significant increase was found in the depth of the plastically deformed surface layer of roller burnished shafts. Usage of the phenomenon of strain hardening of steel allows the technology presented here to increase the fatigue life of the shafts.

Surface characteristics of Al-(SiC)p metal matrix composites by roller burnishing process

Abstract: This paper describes burnishing process as an alternate super finishing process for aluminium reinforced metal matrix (Al-(SiC)p) composites. The advantage of the burnishing process is non-chip removals to attain surface finish whereas other finishing process depends on chip removal to attain the desired surface finish, which may cause further surface abrasion and geometric tolerance. The effect of various input parameters such as burnishing speed, lubricants and number of passes on the output parameters such as surface roughness and surface hardness is studied.

Study of some aspects of burnishing

Abstract: Burnishing is a plastic deformation process in which force is applied on to a metal surface through a hard roller or ball. In this paper, an attempt has been made to investigate the optimum burnishing force, change in dimension and the variations of tangential and normal forces in the process. Expressions were derived to calculate analytically the following: (i) optimum burnishing force, (ii) size change in burnishing. The accuracy of these expressions was verified by suitably conducted experiments. Five non-dimensional numbers of importance to burnishing were established. The variation of normal and tangential forces in roller burnishing (and so the coefficient of friction) was investigated experimentally.