Some investigations on the ballizing process

Fattouh, M.

doi:10.1016/0043-1648(89)90125-7

Cited by 12 publications

(7 citation statements)

References 4 publications

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“…Burnishing process is most often used for machining of circular cross section holes with a diameter from a few tenths of millimeter to about one hundred. In the papers [1][2][3][4] the usefulness of burnishing process (ballizing process) as a finishing hole machining sliding bearings was confirmed. It is important that special burnishing elements in the form of beads used as a tool for broaching were prepared.…”

Section: Introductionmentioning

confidence: 93%

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

Dyl

2017

Archives of Metallurgy and Materials

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This paper presents chosen results of experimental and numerical research of ballizing process of the steel tubes. Ballizing process is a method of burnishing technology of an internal diameter by precisely forcing a ball through a slightly undersized premachined tubes. Ballizing process is a fast, low-cost process for sizing and finishing tubes. It consists of pressing a slightly oversized ball through an unfinished tube to quickly bring the hole to desired size. The ball is typically made from a very hard material such as tungsten carbide or bearing steel. Ballizing process is by cold surface plastic forming of the surface structure, thereby leaving a layer of harder material and reducing its roughness. After theoretical and experimental analysis it was determined that the smaller the diameter of the balls, the bigger intensity of stress and strain and strain rate. The paper presents influence of ballizing process on the strain and stress state and on the surface roughness reduction rate of the steel tubes.

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Section: Introductionmentioning

confidence: 93%

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

Dyl

2017

Archives of Metallurgy and Materials

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“…Recently, burnishing became a familiar finishing processs. several attempts have been devoted towards the utilization of ballizing technique for burnishing of internal cylinderical surface [15][16][17][18]. Fattouh [15] has carried out an experimental work to investigate the ballizing process.…”

Section: Introductionmentioning

confidence: 99%

“…several attempts have been devoted towards the utilization of ballizing technique for burnishing of internal cylinderical surface [15][16][17][18]. Fattouh [15] has carried out an experimental work to investigate the ballizing process. An experimental relationship has been developed to correlate process parameters with the maximum ballizing force.…”

Section: Introductionmentioning

confidence: 99%

Investigation of AL/CU Bimetallic Tube Cladding Process by Severe Plastic Deformation

Ali¹,

Soliman

Abdelrhman

et al. 2022

JES. Journal of Engineering Sciences

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A new cladding process is proposed and implemented on a bimetallic tube of copper and aluminum. Obtaining a good mechanical bond between the tube's layers using simple setup components with low required process force and without using heating are the most distinguishing feature of this study. The objective of this paper is to study the effect of using three different spherical tipped punch diameters (21 mm, 21.6 mm, and 22 mm) on the cladding process. A spherical punch with a slightly enlarged spherical tip was pressed into the clad tube. To study the dynamical analysis of the developed process, an FE model was developed using ANSYS workbench®. The bonding of an AL6082T6 Aluminum tube (as the clad tube) to a pure copper tube (as the base tube) was studied. FE analysis results showed that increasing ball tipped punch diameter leads to an increase in the required process force, the deformation magnitude, the equivalent plastic strain, the maximum principal stress, and the maximum principal elastic strain values. The required process force was measured experimentally and by FE simulation for the three different ball tipped punch diameters. The average values of the FE process forces were found to be 21 KN, 39 KN and 48 KN respectively for the mentioned diameters, while experimentally the average forces values were found to be 13.3 KN, 33 KN and 39 KN for the mentioned diameters, respectively. A 10 KN force was required to dismantle the bimetallic tube layers using shear punch test.

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“…Operations are performed on the same so it is fitting hole machining at very high accuracy class. For ballizing the tube holes used in mass production and mass are, shot, push mandrel and multielement bearings [4,5,8,12]. Because of the influence of elastic object, the size of the maximum element burnishing must be greater than the assumed size of openings of 0.05 mm.…”

Section: Introductionmentioning

confidence: 99%

The Experimental Analysis of the Burnishing Process Using the Methods – NPS

Dyl

2016

Journal of KONES. Powertrain and Transport

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The paper presents selected results of experimental research of burnishing process of the steel tube holes. The ballizing process (NPS) is the method of burnishing where consists of pushing the tool through the hole, wherein the ball is greater in size than the opening of the value of the reduction ratio. Used tools to burnishing are hard and smooth surface. Burnishing elements are made of shape: ball, roll and disk. The ballizing process is carry out by a ball. The precise tube holes are made mostly methods abrasive machining. Machining these methods can usually maintain a within the tolerances established by the constructor size and shape and surface roughness. However, not achieved a satisfactory state surface layer of tube holes. Improve the properties of the surface layer can be obtained after application, as finishing, the slide burnishing. Modelling of the burnishing process using the method, NPS is to determine the impact of a specific curvature a rigid tool with of the workpiece. Ballizing process can increase the dimensional accuracy of tube holes, reducing the surface roughness, the strengthening of the surface layer, compressive residual stresses constitution. Compressive internal stresses substantially influence the fatigue life of machine parts. The aim of experimental research was to obtain surface layer state of compressive residual stress and the material ratio curve of convexity shape.

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Some investigations on the ballizing process

Cited by 12 publications

References 4 publications

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes

Investigation of AL/CU Bimetallic Tube Cladding Process by Severe Plastic Deformation

The Experimental Analysis of the Burnishing Process Using the Methods – NPS

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