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A Study on the Inner Wall Spiral Polishing with Magnetic Force Wei-Chan Chen1,a, Biing-Hwa Yan1,b 1Department of Mechanical Engineering, National Central University, Jhongli 32001, Taiwan aalfred3011@gmail.com, bbhyen@cc.ncu.edu.tw Key words: Abrasive flow machining, magnetic force, spiral polishing, inner wall polishing Abstract.
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Carbide and ceramic are chosen as workpiece.
Hard and brittle materials such as engineering ceramics, optical glass, porcelain brick, moorstone, etc, have features of high intensity, high hard and brittle, wearproof, anticorrosive, heatproof, low density, low expansion coefficient and good chemical stability.
When the polishing machine works, coolant flows to the surface of the workpiece through shaft center, forming mist between workpiece and polishing film, Technical parameters Diameter of polishing-plate : 105mm; Rotational speed of main plate: 0~15000r/min stepless speed; Maximal polishing diameter of workpiece: 150mm; Power of main electrical engineering: 300 W; Power of frequency changer: 750W; Rotation speed of supporting weel in the polishing platform: 0～5000r/min (rotate with main shaft); Electric power supply: alternate current 380V; Cooling pressure: maximum 0.3 air pressure; and washing away metal scraps caused by polishing.
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Figure 1 Micro-nana fiber resonator gyro dynamic characteristic test system diagram 1: Laser; 2: the beam splitter; 3 to 7 constitute a resonator fiber optic inertial, and 3 is a signal fiber; 4 to fiber winding; 5 and 7 for the two symmetrical rectangular piezoelectric ceramic plate; 6 is a piezoelectric ceramic excitation power conductors; 8 is a reference fiber; 9 is a phase modulator; 10 is a photoelectric detector; 11 and 12 for the inverter, etc.; 13 and 14 for the band-pass filter.
Figure 8 Estimation error Figure 9 GA recognition results The transfer functions of the differential equation into the form: Conclusion Micro-nano and micro optical resonator gyro accelerometer is Micro-nana technology and information technology combine to produce a new type of inertial instruments, as one of nanophotonics research field of micro-and nano fiber resonator gyro developed and tested a lot of progress made ​​by electric simulation tests inertial instruments closed-loop frequency characteristic method, system test equipment development and testing methods of testing, accurate testing of the corresponding closed-loop system characteristics, based on the signaling pathway analysis and control system application of the principles of the new inertial instrumentation system for a fully parametric test trials to verify the validity of the test method, the test system has easily implemented in hardware, and more suitable for practical engineering
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Suphadon4,d 1Department of Civil and Architecture, Faculty of Science and Technology, MCRU 70150,Thailand. 2The Rattanakosin College for Sustainable Energy and Environment, RMUTR 73170, Thailand. 3Department of Civil Engineering, Faculty of Engineering, Kasetsart University 10900, Thailand. 4National Metal and Materials Technology Center 12120, Thailand.
Introduction Nowadays, Ratchaburi province is one of the most important area where produces the ceramic earthenware of Thailand.
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[4] A., Ali, "Effect of Reinforcing by MgO Particles on Thermal and Mechanical Characteristics of Epoxy Resin", the Iraqi Journal for Mechanical and Material Engineering, Vol.11, No.3, PP. 560-570, (2011)
Subhi, "Erosive Wear Behavior of Jute Fiber / Polyester resin with Biowaste Materials", 3rd International Conference on Sustainable Engineering Techniques, IOP, Vol.88, No.012100, (2020), doi:10.1088/1757-899X/881/1/012100
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Dating back to 1930s (when the firsts patents on Ceramic Injection Molding appeared), MIM is a powder forming technique consisting on the injection of a metal powder/binder mixture into a metallic mold.
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BaTiO3 is a dielectric ceramic that can be used as a capacitor.
International Journal of Nano Dimension 3(3): 185-190
Ceramic International 39(2013): 9435-9445
Achievements in Materials and Manufacturing Engineering 22(1): 45-48

Ductile iron casting is an accepted engineering material as it characterized by the easily design feasibility through the combination of good castability and high strength with accepted ductility at a lower cost [2].
Microstructural Observation: The microstructure of TWDI castings in green sand and ceramic molds as a function of casting thickness, carbon equivalent (C.E.), are illustrated in Figs. 5-6.
Ali, The Effect of Late Sulfur Inoculation of Ductile Iron Castings on Nodule Count and Nodularity, International Iron & Steel Symposium, Sudan Engineering Society Journal, Vol. 58, No. 1, 2012, 31-34
Narasimhan, Solidification Behavior and Mechanical Properties of Ductile Iron Castings with Varying Thickness, International Journal of Cast Metals Research, Vol. 25, Issue 6, 2012, 364-373
Tyrala, Effect of Cooling Rate on Microstructure and Mechanical Properties of Thin-Walled Ductile Iron Castings, Journal of Materials Engineering and Performance, Vol. 22, Issue 1, 2013, 300-305.