scholarly journals Isotropic finishing of austempered iron casting cylindrical parts by roller burnishing

2020 ◽  
Vol 110 (3-4) ◽  
pp. 753-761
Author(s):  
A. Rodriguez ◽  
L. N. López de Lacalle ◽  
O. Pereira ◽  
A. Fernandez ◽  
I. Ayesta
Keyword(s):  
Iron Casting ◽  
Roller Burnishing ◽  
Cylindrical Parts

Evaluation of the quality of dressing of cylindrical parts by transverse rolling using smooth plates

2020 ◽  
pp. 72-76
Author(s):  
S.А. Zaydes ◽  
Le Hong Kuang
Keyword(s):  
Cylindrical Parts ◽  
Rolling Accuracy

The dressing of non-rigid cylindrical parts by transverse rolling by smooth plates is considered. The effect of absolute drafting on the accuracy of the straightness and diametrical size of the product, microstructure, hardness and hardening depth of the strengthened part is experimentally determined. Keywords dressing, absolute drafting, transverse rolling, accuracy, straightness, roundness, [email protected], microstructure, hardness.

Improvement in Fatigue Performance of 2024-T3 Al Alloy Via Single Toroidal Roller Burnishing

2021 ◽  
Vol 30 (3) ◽  
pp. 2256-2266
Author(s):  
G. V. Duncheva ◽  
J. T. Maximov ◽  
V. P. Dunchev ◽  
A. P. Anchev ◽  
T. P. Atanasov
Keyword(s):  
Fatigue Performance ◽  
Al Alloy ◽  
Roller Burnishing

Roller Burnishing Method with Active Rotation Tool - Better Surface Finish than Conventional Roller Burnishing

2017 ◽  
Vol 749 ◽  
pp. 9-14 ◽  
Author(s):  
Masato Okada ◽  
Yuki Miyagoshi ◽  
Masaaki Otsu
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Surface Finish ◽  
Circumferential Direction ◽  
Theoretical Equation ◽  
Sliding Angle ◽  
Roller Burnishing ◽  
Sliding Direction ◽  
Cylindrical Workpiece ◽  
Sectional Profile

This paper proposes a roller burnishing method that controls the sliding direction of the burnishing tool on the surface of cylindrical workpiece. In this study, the sliding direction was set by inclining the axis of the burnishing tool with respect to the axis of the workpiece and by actively rotating the roller of the burnishing tool. The workpiece was a cylindrical aluminum alloy bar, which was rotated in a bench lathe. The burnished surfaces at several sliding angles between 15º and 90º were evaluated. The sliding direction, which is set according to a theoretical equation, was experimentally obtained for every sliding angle in the range of 15-90º with respect to the circumferential direction of the workpiece. The sectional profile was flattened and surface roughness was decreased with increasing sliding angle. As a result, the burnished surfaces obtained in this work were superior to those obtained in an earlier study by the authors, in which the burnishing tool was not actively rotated.

Parametric-Based Determination of Cylindrical Variations in Geometric Tolerancing

1999 ◽  
Vol 122 (3) ◽  
pp. 549-555 ◽  
Author(s):  
C. Carolina Ba´rcenas ◽  
Paul M. Griffin
Keyword(s):  
Geometric Dimensioning And Tolerancing ◽  
Geometric Tolerancing ◽  
Dimensioning And Tolerancing ◽  
Surface Variation ◽  
Cylindrical Parts ◽  
Different Parts

The ANSI Y14.5M Geometric Dimensioning and Tolerancing Standards have been used for many years by practitioners for size and form verification of manufactured parts. However, different parts may satisfy these tolerances and yet perform quite differently because of surface variations not specified in the standards. We present a statistically-based technique for the determination of the type of surface variation for cylindrical parts. This technique is based on a parametric-based part representation used for fitting. The method is illustrated with examples. [S1087-1357(00)00403-2]

Defects Reduction in Spheroidal Graphite Iron Casting Process of a Jackscrew Manufacturer

2021 ◽  
Vol 891 ◽  
pp. 174-182
Author(s):  
Supachart Muangyai ◽  
Parames Chutima
Keyword(s):  
Six Sigma ◽  
Process Capability ◽  
Casting Process ◽  
End Users ◽  
Spheroidal Graphite ◽  
Iron Casting ◽  
Spheroidal Graphite Iron ◽  
Six Sigma Approach

This research focused on defects reduction in spheroidal graphite iron casting process of a jackscrew manufacturer in which graphite nodularity was lower than a given specification (75%). This situation could lead to serious issues and accident to end-users. The Six Sigma approach of DMAIC was employed to identify and eliminate the problems. The result obtained after implementing the Six Sigma showed that the process capability was improved from-0.47 to 2.04, and the average per cent graphite nodularity was increased significantly from 61.49% to 86.43%.

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