Micromechanical contributions to material removal and surface finish

2007 ◽  
Author(s):  
John C. Lambropoulos ◽  
Stephen D. Jacobs ◽  
Shai N. Shafrir
Keyword(s):  
Surface Finish ◽  
Material Removal

Parametric Optimization of Magnetic Abrasive Finishing Using Adhesive Magnetic Abrasive Particles

2019 ◽  
Vol 7 (2) ◽  
pp. 34-47
Author(s):  
Palwinder Singh ◽  
Lakhvir Singh ◽  
Arishu Kaushik
Keyword(s):  
Surface Finish ◽  
Medical Equipment ◽  
Material Removal ◽  
Parametric Optimization ◽  
Removal Rate ◽  
Improvement Rate ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Particles ◽  
Abrasive Finishing ◽  
Depth Analysis

A very precise surface finish is desirable in manufacturing semiconductors, medical equipment, and aerospace parts. The examinations on magnetic abrasive finishing (MAF) processes are being done for the modern industry. This newly developed process is serving the industry to achieve the desired level of precision and surface finish. This research represents the MAF of aluminum pipes using adhesive magnetic abrasive particles. The different process parameters were optimized using the Response Surface Methodology (RSM) method to gain an in-depth analysis of surface roughness in terms of roughness improvement rate (RIR), and material removal rate (MRR). The achieved maximum RIR and MRR was 81.49% and 2.74mg/min, respectively. The finished workpieces were microscopically investigated by scanning electron microscopy (SEM) to further study the mechanism of MAF process.

Enhancing the Surface Quality by Iso Pulse Generator in EDM Process

2012 ◽  
Vol 622-623 ◽  
pp. 380-384 ◽  
Author(s):  
T. Muthuramalingam ◽  
B. Mohan
Keyword(s):  
Surface Finish ◽  
Material Removal ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Machining Process ◽  
Discharge Energy ◽  
Crater Volume ◽  
Machining Characteristics ◽  
Edm Process

In automobile and aeronautical industries, complex moulds and dies is produced by Electrical Discharge Machining process. The surface finish is determined by the crater volume in EDM process. The amount of crater volume is influenced by the amount and distribution of discharge energy. The discharge energy is directly proportional to the average discharge current. This amount of current is determined by the duration of discharging effect. This study deals about evaluating the performance of iso current pulse generator on machining characteristics in EDM. Due to its ability of reducing stochastic nature in EDM process, iso pulse generator could produce better surface finish than conventional transistor pulse train generator with higher material removal rate.

Optimising the Process Conditions in Ultra-Precision Grinding to Achieve Surface Finish of Optical Quality

2006 ◽  
Vol 304-305 ◽  
pp. 8-13 ◽  
Author(s):  
T. Jin ◽  
D.J. Stephenson
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Material Removal ◽  
Removal Rate ◽  
Optical Quality ◽  
Process Conditions ◽  
Low Alloy Steel ◽  
Optical Surface ◽  
Precision Grinding ◽  
Ultra Precision

Optical surface finish below Ra 10nm can be achieved on a ‘Tetraform C’ grinder of ultra-high stiffness, when grinding a low alloy steel with or without the help of ELID (electrolytic in process dressing). Surface roughness generation modelling has been carried out to predict thepossible surface roughness values. Efforts have been made to transfer the process knowledge to different grinding mode using a rigid 5-axis Edgetek CNC grinder. The effects of material removal rate and grit size and also that of spark out passes on the surface roughness generated have been investigated.

Performance and Analysis of Silicon Mixed Kerosene Servotherm in EDM of Monel 400

2015 ◽  
Vol 766-767 ◽  
pp. 674-680
Author(s):  
P. Karunakaran ◽  
J. Arun ◽  
V. Palanisamy ◽  
N.R.R. Anbusagar ◽  
P. Sengottuvel
Keyword(s):  
Surface Finish ◽  
Material Removal ◽  
Removal Rate ◽  
Silicon Powder ◽  
Graphite Powder ◽  
Dielectric Medium ◽  
Tool Wear Rate ◽  
Good Surface ◽  
Good Surface Finish ◽  
Monel 400

Improving the Material Removal Rate (MRR), reduce Tool Wear Rate (TWR), achieve the good Surface Finish (SF) and Over Cut (OC) are very demanding in Electrical Discharging Machining (EDM). This paper focused on performance of Silicon powder mixed with kerosene servotherm dielectric medium in EDM of Monel 400. The optimum range of Silicon powder, Graphite powder 6g mixes with the dielectric medium of kerosene servotherm (75:25) were developed experimentally. It was reported slightly more MRR, very low TWR, better OC and good surface finish (SF) in Monel 400.

Study on Precision Polishing of a Mini Roller Mold

2010 ◽  
Vol 126-128 ◽  
pp. 551-556
Author(s):  
Choung Lii Chao ◽  
Ying Ching Hsiao ◽  
Wen Chen Chou ◽  
Chia Wei Kuo ◽  
Wen Lang Lai ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Material Removal Rate ◽  
Surface Finish ◽  
Empirical Model ◽  
Material Removal ◽  
Removal Rate ◽  
Surface Condition ◽  
Microscopic Analysis ◽  
Semi Empirical ◽  
Better Than

This research aimed to design and develop a polishing system for precision polishing mini roller mold to nanometer surface finish. An experimental polishing system was built in the present study to polish nickel plated specimens with various polishing compounds. The polished specimens were subsequently examined by Alfa-step, OM and SEM for surface finish, morphology and microscopic analysis respectively. The obtained surface condition and material removal rate were correlated to the polishing parameters such as spindle speed, abrasive concentration, and abrasive grit size for the improvement of the polishing effect. Mini-rollers of 5mm in diameter, 50mm in length were successfully polished to a surface roughness better than 2nm Ra in several hours without damaging the roundness and cylindricalness using abrasive of 0.3μm, 10,000rpm polishing speed and 0.5mm gap distance between polisher and the specimen. A semi-empirical model of polishing was also developed in the study for predicting the materials removal rate.

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