scholarly journals Investigation on Finishing Characteristics of Magnetic Abrasive Finishing Process Using an Alternating Magnetic Field

Machines ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 75
Author(s):  
Huijun Xie ◽  
Yanhua Zou
Keyword(s):  
Magnetic Field ◽  
Magnetic Particles ◽  
Alternating Magnetic Field ◽  
Surface Finishing ◽  
Magnetic Cluster ◽  
Magnetic Abrasive Finishing ◽  
Square Wave ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
The Difference

The magnetic abrasive finishing (MAF) process is an ultra-precision surface finishing process. In order to further improve the finishing efficiency and surface quality, the MAF process using an alternating magnetic field was proposed in the previous research, and it was proven that the alternating magnetic field has advantages compared with the static magnetic field. In order to further develop the process, this study investigated the effect on finishing characteristics when the alternating current waveform is a square wave. The difference between the fluctuation behavior of the magnetic cluster in two alternating magnetic fields (sine wave and square wave) is observed and analyzed. Through analysis, it can be concluded that the use of a square wave can make the magnetic cluster fluctuate faster, and as the size of the magnetic particles decreases, the difference between the magnetic cluster fluctuation speed of the two waveforms is greater. The experimental results show that the surface roughness of SUS304 stainless steel plate improves from 328 nm Ra to 14 nm Ra within 40 min.

Study on an Ultra-Precision Plane Magnetic Abrasive Finishing Process by Use of Alternating Magnetic Field

2013 ◽  
Vol 395-396 ◽  
pp. 985-989 ◽  
Author(s):  
Jin Zhong Wu ◽  
Yan Hua Zou
Keyword(s):  
Magnetic Field ◽  
Magnetic Particles ◽  
Water Soluble ◽  
Alternating Magnetic Field ◽  
Magnetic Flux Density ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Ultra Precision ◽  
Surface Precision

In this paper, a new plane magnetic abrasive finishing process by using alternating magnetic field is proposed to improve the efficiency and surface precision. In alternating magnetic field, the forced direction of magnetic particles is changing. Therefore, magnetic particles could produce the up and down movement, which promote the scatter of magnetic particles , improve the roll of abrasive particles and enhance the utilization of abrasive. In order to know well the magnetic intensity distribution in processing area, measured the magnetic flux density. Finishing force is important to understand the mechanism of material removal, investigated to the finishing force and contrasted to the movement changes of magnetic particles in water-soluble finishing fluid and oily finishing fluid. A set of experimental devices have been designed to realize surface polishing on C2801 brass plate, the results proved the feasibility of this method, which can improve the workpiece surface quality.

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.

Uniform Internal Finishing of SUS304 Stainless Steel Bent Tube Using a Magnetic Abrasive Finishing Process

2004 ◽  
Vol 127 (3) ◽  
pp. 605-611 ◽  
Author(s):  
Hitomi Yamaguchi ◽  
Takeo Shinmura ◽  
Megumi Sekine
Keyword(s):  
Magnetic Field ◽  
Stainless Steel ◽  
Removal Rate ◽  
Surface Finishing ◽  
Initial Surface ◽  
Magnetic Abrasive Finishing ◽  
Sus304 Stainless Steel ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
The Magnetic Field

This research studies the factors affecting the conditions required for successful uniform internal finishing of SUS304 stainless steel bent tube by a Magnetic abrasive finishing process. In particular, the effects of the magnetic field and ferrous particles were investigated. Local intensification of the magnetic field is accomplished by offsetting the axis of pole rotation from elbow axis. This effect enables local control of the material removal rate, which leads to uniformity in the finished surface regardless of the initial surface conditions. A two-phase finishing process controlling the size of the ferrous particles is proposed to achieve efficient fine surface finishing.

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