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Roller burnishing

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


Papers
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Journal ArticleDOI
TL;DR: Result and comparative data clearly indicate the better prediction capability of the RSM over the MLR model for Surface roughness.
Abstract: Burnishing is a chip less finishing method which employs a rolling tool pressed against the work piece for achieving plastic deformation of the surface layer. Roller burnishing process is largely considered in industrial cases in order to restructure surface characteristic. The main aim of this study is to compare the prediction accuracy of Response surface methodology (RSM) and Multiple Linear Regressions (MLR) model for Surface roughness. Roller burnishing process is employed on Al alloy work piece for current study. In the present work the effect of burnishing parameter like speed, Interference, feed and the number of passes is going to be examined on the surface quality and its wearing characteristics of Al Alloy 6061.Result and comparative data clearly indicate the better prediction capability of the RSM over the MLR model.

2 citations

Journal Article
TL;DR: In this article, the effect of turn-assisted deep cold rolling on the fatigue behavior of AISI 4140 steel is examined and a second order regression model is developed to predict the fatigue life using response surface methodology and central composite design.
Abstract: It is well recognized that mechanical surface enhancement methods, such as shot peening, laser shock peening, roller burnishing and deep cold rolling can significantly improve the fatigue performance of highly-stressed metallic components. Deep cold rolling is particularly attractive since it is possible to generate, near the surface, deep compressive residual stresses and work hardened layers while retaining a relatively smooth surface finish. In this paper, the effect of turn-assisted deep cold rolling on the fatigue behavior of AISI 4140 steel is examined. In the present study, the parameters which have significant effect on turn-assisted deep cold rolling process are identified. Fatigue experiments are performed using rotating beam fatigue testing machine. The data is plotted as cyclic stress versus number of cycles to failure. It is found that ball diameter and rolling force has significant influence on fatigue performance of 4140 steel and it exhibits well-defined fatigue limit below which continued loading does not lead to failure. It is further established that the higher the cyclic stress the shorter the life. A second order regression model is developed to predict the fatigue life using response surface methodology and central composite design. Based on cyclic deformation and stress/life (S/N) fatigue behavior, it is found that turn-assisted deep cold rolling can be quite effective in retarding the initiation and initial propagation of fatigue cracks in AISI 4140 steel.

2 citations

Patent
19 Feb 1993
TL;DR: In this article, a tool unit body is composed of a mandrel, a guide cylinder, and a plurality of tapered rollers, and the mandrel is supported by a pressure sensing means.
Abstract: PURPOSE:To provide a high safety roller burnishing device, which can yield a high precision cylindricity of the bore and with which the mandrel is prevented from breakage. CONSTITUTION:The head part 7a of a tool unit body 7 is composed of tapered roller 1, a mandrel 2 having at the tip a taper opposite the taper of roller, and a guide cylinder 3 supporting a plurality of tapered rollers 1. The tip of the mandrel 2 is in contact with the tip of each tapered roller 1 at their circumferential side faces, and the dia. of the circumscribing circle of tapered roller 1 varies depending upon the vertical position of the mandrel 2, and the whole tool unit body 7 reciprocates between the processing position and non-processing position. The mandrel 2 is supported on the tool unit body 7 with possibility of moving vertically, and a driving means 12 to move mandrel 2 vertically is installed independently from a driving means for tool unit body 7. The tool unit body 7 is equipped with a pressure sensing means 13 which senses the load applied to its head part 7a.

2 citations

Patent
26 Sep 2003
TL;DR: In this article, a rotary shaft that can improve strength of a weld zone in which members are friction-welded to each other was constructed by pressing a roller 55 which is freely rotatable around a roller support shaft center 54 of a Superoll 50, in the direction of the arrow A, toward the corner portions 35, 37 of the rotating auger.
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a rotary shaft that can improve strength of a weld zone in which members are friction-welded to each other. SOLUTION: Three solid round bars are prepared as auger members, respectively as a main body member 41, an upper shaft member 42, and a lower shaft member 43. End surfaces of the members are coaxially joined together by friction welding. Turning machining is then performed by using a lathe, forming a helical blade 31a, a spline 33a, and the like. In addition, burnishing is performed on a corner portion 35 that includes an outer circumferential edge 34a of a joining surface 34 where friction welding is performed, and another corner portion 37 that includes an outer circumferential edge 36a of another joining surface 36 where friction welding is performed, The burnishing is performed by pressing a roller 55, which is freely rotatable around a roller support shaft center 54 of a Superoll (R) 50, in the direction of the arrow A, toward the corner portions 35, 37 of the rotating auger. Roller burnishing may also be performed two times on the same location, with a predetermined time interval therebetween. COPYRIGHT: (C)2005,JPO&NCIPI

2 citations

Proceedings ArticleDOI
TL;DR: In this article, rotary bending fatigue tests were carried out on a cast aluminum alloy, JIS AC4CH, with two different levels of defect size, and the predicted values of fatigue limits for specimens with the different defect sizes were not in good agreement with the experimental values.
Abstract: In order to clarify the effect of casting defects on the high cycle fatigue properties, rotary bending fatigue tests were carried out on a cast aluminum alloy, JIS AC4CH, with two different levels of defect size. As a result of fatigue tests, the fatigue strength decreased with increasing the defect size. The fatigue limits were estimated by the area parameter model and compared with experimental values. The maximum defect size evaluated by the extreme value statistics was used in the prediction. The predicted values of fatigue limits for specimens with the different defect sizes were not in good agreement with the experimental values. In addition, the effects of the roller burnishing process on surface conditions and fatigue properties were also investigated. Vickers’ hardness and compressive residual stress on the specimen surface were increased by the burnishing process. An improvement of fatigue property was found in the burnished specimen. It is due to the disappearance of casting defect on the specimen surface, and increase of hardness and compressive residual stress.

2 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202120
202024
201915
201826
201714
201625