02579nam a2200241 a 4500 vtls000044935 KUKTEM 20251114204420.0 091203t2008 my a f m 000 0 eng|d THE0006572(Local) 201905161021 amirul 201112051356 Fida 201107132301 VLOAD 200912031036 ida 200912031034 ida UMP TJ1191 .F37 2008 rs Bc. Norfarhanah Zakaria Effects of hole taper on high speed steel workpiece using EDM injection flushing / Norfarhanah Zakaria Kuantan, Pahang : UMP, 2008 47 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Mechanical Engineering with Manufacturing) -- Universiti Malaysia Pahang - 2008 Includes bibliographical references Electrical 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. Electric metal-cutting 0 0 0 1 20000 20000 2019-09-04 0 TJ1191 .F37 2008 rs Bc. 0000038105 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 3406 | TJ1191 .F37 2008 rs Bc. 0000038106 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1658 1664 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*9992