scholarly journals Statistical model of metal removal removed from product surface under the influence of abrasive particle flow

2020 ◽  
Vol 210 ◽  
pp. 08005
Author(s):  
Georgi Tzordanidi ◽  
Oksana Pyatnitzkaya ◽  
Elena Fisunova ◽  
Tatyana Lavrenova ◽  
Olga Baryshnikova
Keyword(s):  
Statistical Model ◽  
Metal Removal ◽  
Abrasive Particle ◽  
Particle Flow ◽  
Particle Impact ◽  
Metal Volume ◽  
Product Surface ◽  
Plastic Displacement ◽  
Random Nature ◽  
Free Abrasive

A model is proposed that describes the forming processes of metal volume removed from the product surface during processing with a free abrasive flow, taking into account the random nature of abrasive particle impact on the surface and the possibility of implementing acts of elastic and plastic displacement of material or micro-cutting.

Swirling Fluidized Bed Polishing: A New Non-Conventional Method of Surface Modification

2015 ◽  
Vol 813-814 ◽  
pp. 634-640
Author(s):  
N.K. Francis ◽  
K.G. Viswanadhan ◽  
M.M. Paulose
Keyword(s):  
Surface Modification ◽  
Fluidized Bed ◽  
Metal Removal ◽  
Complex Geometry ◽  
Removal Rate ◽  
Abrasive Particle ◽  
Surface Finishing ◽  
Polished Surface ◽  
Work Piece ◽  
Machining Accuracy

Swirling Fluidized Bed Polishing (SFBP) is a non–traditional alternative abrasive flow surface finishing form of Fluidized Bed Machining (FBM) in which the former has special features to overcome certain significant limitations of the latter, namely the variation of the surface roughness vertically along the component surface and the screening effect owing to the complex contours in the work piece geometry. Owing to its ability to perform machining and generate polished surface from a roughness value of Ra 1.2μ to 0.2 μ within 8 hours of processing, this new method offers greater scope in the surface modification of rough machined surfaces with complex geometry such as component with ducts and grooves. This research focus on investigating the effect of abrasive particle concentration on metal removal rate per unit area of the specimen surface. 3D surface morphology analysis investigates the quality of the polished surface and the study of circumferential uniformity and machining accuracy analysis on a complex-contoured component further investigate its scope and relevance in industrial applications.

Effect of Free Abrasive Particle in Gasbag Polishing Technique

2009 ◽  
Vol 69-70 ◽  
pp. 83-87
Author(s):  
Ming Sheng Jin ◽  
Shi Ming Ji ◽  
Li Zhang ◽  
Xian Zhang ◽  
Ya Qi Shen
Keyword(s):  
Material Removal ◽  
Abrasive Particle ◽  
General Distribution ◽  
Material Removal Mechanism ◽  
Polishing Process ◽  
Mould Surface ◽  
Movement Characteristic ◽  
Distribution State ◽  
Polishing Efficiency ◽  
Free Abrasive

Free abrasive particle plays a crucial role in material removal and quality improvement of curved surface mould. In order to observe and investigate the general distribution state, fractal dimension and movement characteristic of abrasive particle in gasbag polishing process better, an abrasive particle stroboscopic photography system is established and polishing experiment is carried out. The abrasive particle contacts with not only the rubber gasbag enwrapped by polishing cloth full of mesh-like structures, but also the mould surface. Contact analysis of abrasive particle including the discussions of contact state, material removal mechanism and advantage of precession polishing is helpful to hold the optimal polishing process parameters combination and establish ideal abrasive particle field for higher polishing efficiency and more well-proportioned surface quality.

scholarly journals Study on abrasive particle impact modeling and cutting mechanism

2021 ◽  
Author(s):  
Mingfei Mu ◽  
Long Feng ◽  
Qiang Zhang ◽  
Wanshun Zang ◽  
Haixia Wang
Keyword(s):  
Abrasive Particle ◽  
Particle Impact ◽  
Cutting Mechanism

scholarly journals Modeling metal removal from workpiece surface during centrifugal rotation processing

2021 ◽  
Vol 2131 (5) ◽  
pp. 052030
Author(s):  
N Van Tho ◽  
A Soloviev ◽  
M Tamarkin
Keyword(s):  
Contact Interaction ◽  
Metal Removal ◽  
Abrasive Particle ◽  
Three Dimensional ◽  
Technological Parameters ◽  
Machining Time ◽  
Workpiece Surface ◽  
Modeling And Analysis ◽  
Three Dimensional Modeling ◽  
Removal Of Metal

Abstract The modeling and analysis the removal of metal process in centrifugal rotational processing of workpiece in abrasive medium are considered in this article. The single contact interaction process between abrasive particle and the workpiece surface is researched through three-dimensional modeling taking into account dry coefficient of friction. The contact interaction problem is solved through Ansys software and Archard code programmed to analyze the data. The removal of metal from the workpiece surface is researched when changing the technological parameters: friction coefficient, machining time, speed. The dependences between metal removal from the workpiece surface and technological parameters are constructed, from which reasonable parameters can be selected when machining the workpiece, allowing to achieve high accuracy. Experimental results have been confirmed by simulation results. Through this research, essential and important data sheets will be provided for actual production and testing activities. Consequently, time and money are saved in achieving the desired surface quality.

Sand Erosion Performance of Gradient Ceramic Nozzles by Abrasive Air-Jets

2006 ◽  
Author(s):  
Jianxin Deng
Keyword(s):  
Wear Resistance ◽  
Abrasive Particle ◽  
Particle Impact ◽  
Erosion Wear ◽  
Apparent Increase ◽  
Air Jets ◽  
Air Jet ◽  
Sand Erosion ◽  
The Common ◽  
Compressive Residual Stresses

A SiC/(W,Ti)C ceramic nozzle with gradient structures was produced by hot pressing. The purpose is to reduce the tensile stress at the entry region of the nozzle in abrasive air-jet. The sand erosion performance of this kind gradient ceramic nozzle caused by abrasive particle impact was investigated by abrasive air-jets in comparison with the common one. Results showed that the gradient ceramic nozzles exhibited an apparent increase in erosion wear resistance over the common ceramic nozzles. The mechanism responsible was explained as the formation of compressive residual stresses in nozzle entry region in fabricating process of the gradient ceramic nozzles, which may partially counteract the tensile stresses resulting from external loadings. It is indicated that gradient structures in ceramic nozzles is an effective way to improve the erosion wear resistance of common ceramic nozzles.

Particle Flow Simulation on Semi-Fixed Abrasive Tool Processing

2011 ◽  
Vol 487 ◽  
pp. 175-179
Author(s):  
Ping Zhao ◽  
Wei Feng Yao ◽  
Q.F. Deng ◽  
Dun Liu ◽  
Ju Long Yuan
Keyword(s):  
Abrasive Particle ◽  
Flow Simulation ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Abrasive Tool ◽  
Tool Surface ◽  
Ultra Precision ◽  
Motion Characteristics ◽  
Fixed Abrasive ◽  
Particle Flow Simulation

The semi-fixed abrasive tool (SFAT) is a new tool used in the ultra-precision machining. Based on the theory of particle flow code (PFC), the abrasive particle motion characteristics of SFAT are studied in SFAT processing which is divided to workpiece pressing progress and workpiece tangential moving progress. It is conclusion that the particles are fallen out the tool surface due to the fracture of bonds under the normal force of workpiece point in the workpiece pressing progress; the particles contacting the workpiece are moved on every hand while some particles fall out the surface at the edge of abrasive tool in the workpiece tangential moving progress, and the maximum value of binding agent holding force is computed.

Computer simulation of metal removal from machine parts during centrifugal rotation processing

2020 ◽  
Keyword(s):  
Processing Time ◽  
Flat Surface ◽  
Metal Removal ◽  
Abrasive Particle ◽  
Dynamic Contact ◽  
Pressure Force ◽  
Modeling And Analysis ◽  
Machine Parts ◽  
Metal Processing ◽  
Surface Layer Quality

The modeling and analysis of the metal removal process at centrifugal-rotational processing of parts in an abrasive discrete medium are considered in this article. The interaction of a single abrasive particle with a flat surface of the part is considered. The relation between workpiece metal removal and parameters of contact interaction — pressure force, processing time, sliding speed — is researched. Keywords metal removal from the surface of the part; abrasive metal processing; centrifugal rotation processing; surface layer quality; dynamic contact task; finite element method (FEM)

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