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008 091203t2008 my a f m 000 0 eng|d
020 _aTHE0006572(Local)
039 9 _a201905161021
_bamirul
_c201112051356
_dFida
_c201107132301
_dVLOAD
_c200912031036
_dida
_y200912031034
_zida
040 _aUMP
090 _aTJ1191 .F37 2008 rs Bc.
100 0 _aNorfarhanah Zakaria
245 1 0 _aEffects of hole taper on high speed steel workpiece using EDM injection flushing /
_cNorfarhanah Zakaria
260 _aKuantan, Pahang :
_bUMP,
_c2008
300 _a47 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Mechanical Engineering with Manufacturing) -- Universiti Malaysia Pahang - 2008
504 _aIncludes bibliographical references
520 3 _aElectrical Discharge Machining (EDM) is a controlled metal-removal process that is used to remove metal by means of electrical spark erosion. The objective of this thesis project is to determine the effects of injection flushing on the angle taper of a workpiece. One or the most important factors in a successful EDM operation is the removal of the particles from the working gap. Flushing these particles out of the gap between the workpiece and the electrode are very important to prevent them from forming bridges that cause short circuits. Secondary discharge can occur easily on the hole’s side wall workpiece when using injection flushing. The secondary discharge will cause the hole taper because of small diameter hole and depth of machining. This study develops the EDM injection flushing on the hole taper of high speed steel M35. The parameters of the EDM machine are constant while the pressure flushing is varying from 0.03 MPa to 0.15 MPa. The most important is to eliminate the taper causes by the injection flushing. Copper was used as electrode to machine the high speed steel M35, which is widely used as cutting tools in industry. The dielectric fluid was kerosene. The effects of hole taper by using injection flushing was analyzed and discussed. There is a taper occurs at high pressure, medium pressure and low pressure. The most effective pressure to find the 0° of angle is between 0.06 MPa to 0.08 MPa which is at medium pressure. The effects of angle taper including the material of copper and high speed steel, depth of machining and also electrode wear.
650 0 _aElectric metal-cutting
999 _aVIRTUA40
_c1658
_d1664
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*9992