Effective Deburring of the Burr at Intersecting Hole by Permanent Magnet Inductor

2007 ◽  
Vol 24-25 ◽  
pp. 29-38 ◽  
Author(s):  
S.R. Jo ◽  
S.L. Ko ◽  
Yuri M. Baron
Keyword(s):  
Plastic Deformation ◽  
Permanent Magnet ◽  
Iron Powder ◽  
Rotational Speed ◽  
Machining Process ◽  
Magnetic Abrasive Finishing ◽  
Effective Removal ◽  
Abrasive Finishing ◽  
And Performance ◽  
Magnetic Nature

The sharp burrs produced by plastic deformation during machining of the precision components deteriorates the precision and performance of a machine. Thus, effective removal of the burrs may improve productivity and performance of the machinery. This study was conducted based on the experiment to remove fine burrs produced during machining process using the magnetic abrasive finishing method. The magnetic abrasive finishing using the abrasive feature of an abrasive and the magnetic nature of iron is an abrasive method to brush the burrs with iron powder that has a cohesive power due to the line of induction. The purpose of this study is to remove the burrs at intersecting holes which are difficult to access with tools, using the magnetic abrasive finishing method. Special tool is designed for deburring micro burr at intersecting holes. To find the proper deburring condition, gap distance, rotational speed of inductor, components of powder and effect of coolant are analyzed.

Experimental Study on Mechanism and Performance of Magnetic Abrasive Finishing

2006 ◽  
Vol 304-305 ◽  
pp. 384-388
Author(s):  
Shu Ren Zhang ◽  
W.N. Liu
Keyword(s):  
Surface Roughness ◽  
Magnetic Force ◽  
Ferromagnetic Materials ◽  
Feed Speed ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Particles ◽  
Technical Parameters ◽  
Abrasive Finishing ◽  
Series Of Experiments ◽  
And Performance

Magnetic Abrasive Finishing (MAF) is relatively a new finishing technique that employs the magnetic force for finishing. In the paper, finishing mechanism of MAF is studied and four self-sharpening modes of abrasive particles are put forward. With the cylindrical magnetic abrasive apparatus designed and made by the author, a series of experiments on finishing the cylindrical surfaces of nonferromagnetic materials and ferromagnetic materials are carried out. The influence of technical parameters (finishing speed, feed speed, finishing time and so on) on finishing performance is analyzed. Choosing the optimized technical parameters, , the surface roughness of ferromagnetic materials changes from Ra 0.825µm to Ra 0.045µm after the 12-minute finishing experiment; the surface roughness of nonferromagnetic materials changes from Ra 0.434µm to Ra 0.096µm after the 20-minute finishing experiment.

Study on a Magnetic Deburring Method by the Application of the Plane Magnetic Abrasive Machining Process

2009 ◽  
Vol 76-78 ◽  
pp. 276-281 ◽  
Author(s):  
Yan Hua Zou ◽  
Takeo Shinmura ◽  
F. Wang
Keyword(s):  
Magnetic Particles ◽  
Constant Pressure ◽  
Machining Process ◽  
Magnetic Pole ◽  
Shape Accuracy ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
The Difference ◽  
Pole Surface

This research studies the influence　of constant pressure acting on the magnetic particles brush for the precision machining of planar and curved workpieces. In particular, it examined the effects of constant pressure on improving the formal accuracy of the workpiece. This process method, constant pressure is applied to the magnetic pole of a conventional magnetic brush, the constant pressure acted to the surface of the workpiece through the magnetic particle brush formed at the magnetic pole surface. The authors conducted a plane magnetic abrasive finishing experiment using both the conventional magnetic abrasive finishing process and the newly proposed constant-pressure magnetic abrasive finishing process to compare the deburring characteristics between the processes for removing burrs from holes drilled in brass plate workpieces. In this experiment, a brass disk with a drilled hole was used as a workpiece. As a result, the difference in finishing characteristics was clarified. The results showed that the burr can be removed by use of this new plane magnetic abrasive finishing process and it is more useful than the conventional magnetic brush for improving the shape accuracy of the workpiece.

scholarly journals Modelling Of Wind Turbine Magnet for Magnetic Abrasive Finishing and Magnetic Field Assisted Abrasive Flow Machining Process

2021 ◽  
Author(s):  
Anant Bhardwaj ◽  
◽  
Krovvidi Srinivas ◽  
Rajiv Chaudhary ◽  
◽  
...  
Keyword(s):  
Magnetic Field ◽  
Wind Turbine ◽  
Cylindrical Specimen ◽  
Machining Process ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Flow Machining ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Significant Process ◽  
Micro Level

Magnetic Abrasive Finishing is a significant process for finishing up to the micro-level. However, with the advancement of technology and hybrids like Viscoelastic magnetic abrasive Finishing and Magnetic abrasive Flow machining, it has become a nano finishing process. To improve the finishing process, the researchers have made a Model and tested the feasibility of the wind turbine magnet in Finishing. The Maxwell simulations were done for the cylindrical Specimen of Brass, Steel Aluminum. The simulations results were in accordance with the fact that the proposed wind turbine magnet may be used for the simulations.

Study of Magnetic Abrasive Finishing Using Mechanically Alloyed Magnetic Abrasives

2012 ◽  
Vol 585 ◽  
pp. 517-521
Author(s):  
Mahadev Gouda Patil ◽  
Kamlesh Chandra ◽  
P.S. Misra
Keyword(s):  
Surface Roughness ◽  
Powder Processing ◽  
High Energy ◽  
Processing Technique ◽  
Machining Process ◽  
Magnetic Flux Density ◽  
Mechanically Alloyed ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Finishing ◽  
Magnetic Abrasives

The finishing characteristics of mechanically alloyed magnetic abrasives used in cylindrical magnetic abrasive finishing (MAF) are presented in this study. Mechanical alloying is a solid state powder processing technique, where the powder particles are subjected to impact by the balls in a high energy ball mill or attritor at room temperature. After the process, fine magnetic abrasives are obtained in which the abrasive particles are attached to the base metal matrix without any bonding material. The magnetic particle used in the magnetic abrasive production is iron powder and the abrasive is aluminium oxide. Magnetic abrasives play the role of cutting tools in MAF, which is emerging as an important non-conventional machining process. The experiments performed on stainless steel tubes examine the effects of varying the quantity of magnetic abrasives, magnetic flux density, speed of rotation of the workpiece and amount of lubricant. The surface roughness measurements demonstrate the effects of the abrasive behaviour on the surface modification. The surface roughness was analysed in terms of percentage improvement in surface finish (PISF). The obtained maximum PISF was 40 % and the minimum surface roughness was 0.63 μm Ra.

scholarly journals Development of a New Ultra-High-Precision Magnetic Abrasive Finishing for Wire Material Using a Rotating Magnetic Field

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 312 ◽  
Author(s):  
Lida Heng ◽  
Cheng Yin ◽  
Seok Han ◽  
Jun Song ◽  
Sang Mun
Keyword(s):  
Magnetic Field ◽  
Surface Roughness ◽  
High Precision ◽  
Rotational Speed ◽  
Steel Wire ◽  
Rotating Magnetic Field ◽  
Magnetic Abrasive Finishing ◽  
Wire Material ◽  
Finishing Process ◽  
Abrasive Finishing

In this paper, we propose a new ultra-high-precision magnetic abrasive finishing method for wire material which is considered to be difficult with the existing finishing process. The processing method uses a rotating magnetic field system with unbonded magnetic abrasive type. It is believed that this process can efficiently perform the ultra-high-precision finishing for producing a smooth surface finish and removing a diameter of wire material. For such a processing improvement, the following parameters are considered; rotational speed of rotating magnetic field, vibration frequency of wire material, and unbonded magnetic abrasive grain size. In order to evaluate the performance of the new finishing process for the wire material, the American Iron and Steel Institute (AISI) 1085 steel wire was used as the wire workpiece. The experimental results showed that the original surface roughness of AISI 1085 steel wire was enhanced from 0.25 µm to 0.02 µm for 60 s at 800 rpm of rotational speed. Also, the performance of the removed diameter was excellent. As the result, a new ultra-high-precision magnetic abrasive finishing using a rotating magnetic field with unbonded magnetic abrasive type could be successfully adopted for improving the surface roughness and removing the diameter of AISI 1085 steel wire material.

scholarly journals Interplay of Process Variables in Magnetic Abrasive Finishing of AISI 1018 Steel Using SiC and Al2O3 Abrasives

2019 ◽  
Vol 3 (2) ◽  
pp. 29 ◽  
Author(s):  
Mohammad Uddin ◽  
Vincent Santos ◽  
Romeo Marian
Keyword(s):  
Surface Quality ◽  
Process Parameters ◽  
Rotational Speed ◽  
Mesh Size ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Particles ◽  
Abrasive Finishing ◽  
Type Size ◽  
Dominant Process ◽  
Series Of Experiments

This paper investigates the underlying interplay between the key process parameters of magnetic abrasive finishing (MAF) in improving surface quality. The five process parameters considered were the working gap, rotational speed, feed rate, abrasive amount, and abrasive mesh when MAFed independently with two abrasive particles—SiC and Al2O3. A series of experiments were conducted with an in-house built MAF tool. Based on the main effect results, a model predicting roughness reduction was developed. Results show that surface quality improvement and the underlying dominant process parameters seem unique to the abrasive type used. When MAFed with SiC, the abrasive quantity and rotational speed influence the most. On the other hand, when MAFed with Al2O3, the trend is different to SiC, i.e., the abrasive mesh size and the working gap are dominant. The prediction model was well validated by independent experiments, indicating its accuracy in estimating and optimizing the process outcome. MAF is a simple process with a complex interplay between parameters. This is very crucial when abrasive type, size, and amount to be used are concerned, which warrants a deeper investigation in terms of underlying dynamics, interactions, and the deformation of abrasive, magnetic, and workpiece materials.

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