An experimental study on the correlation of polishing force and material removal for bonnet polishing of cobalt chrome alloy

2014 ◽  
Vol 73 (1-4) ◽  
pp. 185-193 ◽  
Author(s):  
S. Zeng ◽  
L. Blunt
Keyword(s):  
Experimental Study ◽  
Material Removal ◽  
Bonnet Polishing ◽  
Polishing Force ◽  
Cobalt Chrome Alloy ◽  
Cobalt Chrome

Force Measurement and Analysis for Magnetic Field–Assisted Finishing

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Vasishta Ganguly ◽  
Tony Schmitz ◽  
Arthur Graziano ◽  
Hitomi Yamaguchi
Keyword(s):  
Magnetic Field ◽  
Surface Roughness ◽  
Material Removal ◽  
Force Measurement ◽  
Removal Rate ◽  
Iron Particle ◽  
Free Form ◽  
Total Force ◽  
Polishing Force ◽  
Free Form Surfaces

Magnetic field–assisted finishing (MAF) is used to polish free-form surfaces. The material removal mechanism can be described as a flexible “magnetic brush” that consists of ferromagnetic particles and abrasives that arrange themselves in the working gap between the magnet and the workpiece. Relative motion between the brush and the workpiece causes microcutting and improves surface finish. In this study, the contributions of the magnetic and polishing force components to the total force were evaluated. The effect of varying the polishing conditions, such as the working gap and the size of the ferromagnetic iron particles, on polishing forces, surface roughness, and material removal rate was also analyzed. It was observed that the polishing forces varied considerably with working gap. Also, the iron particle size was found to have a strong relation to the rate at which the surface roughness improved. Surface roughness values of 2–3 nm were achieved.

Characterisation of the Femtosecond Laser Micro-Grooving Process for Germanium Substrates

2016 ◽  
Vol 874 ◽  
pp. 291-296 ◽  
Author(s):  
Lin Li ◽  
Jun Wang ◽  
Huai Zhong Li
Keyword(s):  
Experimental Study ◽  
Process Parameters ◽  
Material Removal ◽  
Removal Rate ◽  
High Quality ◽  
Scan Speed ◽  
Micro Grooving ◽  
Fs Laser ◽  
Selection Of ◽  
Germanium Substrates

An experimental study is reported to characterise the femtosecond (FS) laser grooving process for Germanium (Ge) substrates. The effects of process parameters, including laser fluence, pulse repetition rate and scan speed, on the groove characteristics, material removal rate (MRR) and heat affected zone (HAZ) size are discussed. It is shown that with properly selected process parameters, high quality micro-grooves can be obtained on Ge wafers. Recommendations are finally made on the selection of the most appropriate process parameters for FS micro-grooving of Ge substrates.

A new pin-on-disk wear testing method for simulating wear of polyethylene on cobalt-chrome alloy in total hip arthroplasty

2001 ◽  
Vol 16 (5) ◽  
pp. 658-665 ◽  
Author(s):  
Charles R. Bragdon ◽  
Daniel O. O'Connor ◽  
Jay D. Lowenstein ◽  
Murali Jasty ◽  
Stephen A. Biggs ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Wear Testing ◽  
Total Hip ◽  
Testing Method ◽  
Pin On Disk ◽  
Cobalt Chrome Alloy ◽  
Cobalt Chrome

A NOVEL ARTIFICIAL PROSTHETIC REPLACEMENT FOR THE PROXIMAL INTERPHALANGEAL JOINT OF THE HAND — FROM CONCEPT TO PROTOTYPE

Hand Surgery ◽  
2005 ◽  
Vol 10 (02n03) ◽  
pp. 159-168 ◽  
Author(s):  
S. P. Chow ◽  
K. W. Lam ◽  
I. Gibson ◽  
A. H. W. Ngan ◽  
W. Lu ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Proximal Interphalangeal Joint ◽  
Interphalangeal Joint ◽  
Joint Prosthesis ◽  
Prosthetic Replacement ◽  
Optimal Range ◽  
Alloy Material ◽  
Pip Joint ◽  
Cobalt Chrome Alloy ◽  
Cobalt Chrome

This article describes the development of a proximal interphalangeal (PIP) joint prosthesis based on the principles of replicating anatomical surface components, the use of macrolocking intramedullary stem and the use of a cobalt-chrome alloy material. The design features are intended to obtain an optimal range of motion while retaining stability and longevity. The final prototype, for which a patent has been filed, is described.

The Experimental Study on Mechanical Polishing on Materials with Hydrolysis Reaction

2017 ◽  
Vol 739 ◽  
pp. 182-186
Author(s):  
Hung Jung Tsai ◽  
Pay Yau Huang ◽  
Chung Ming Tan ◽  
Tang Feng Chang
Keyword(s):  
Experimental Study ◽  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Experimental Studies ◽  
Operating Conditions ◽  
Hydrolysis Reaction ◽  
Polishing Process ◽  
Surface Polishing ◽  
Material Removal Rate Model

The hydrolytic properties of LiAlO2 (LAO) are important factors for its applications on LED fabrication. During soft pad polishing process, the H2O in the slurry is deleterious for LAO surface polishing results. The current study develops a material removal rate model for materials with hydrolysis reaction to predict the result of polishing process.The current research conducts the experimental studies to investigate the material removal rate and its mechanism during the soft pad polishing process. In the experimental study, the hydrolytic properties of LAO have been tested to understand the hydrolysis speed with different operation parameters to assist the development of the theoretical model. Also the material removal rates of LAO with hydrolytic property have been measured under different soft pad polishing operating conditions. The experimental results provide the hydrolytic properties of LiAlO2 to understanding of the mechanism on polishing process.

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