000 02948nam a2200253 a 4500
001 vtls000077906
003 KUKTEM
005 20251114204603.0
008 140505t2012 my a f m 000 0 eng d
020 _aTHE0006534(Local)
039 9 _a201905141510
_bamirul
_y201405051602
_ztraining3
040 _aUMP
090 _aTJ1186 .F34 2012 rs Bc.
100 0 _aMuhammad Fahmi Jasri
245 1 0 _aInvestigation of machining performance of the coated carbide cutting tools with acid etching surface pretreatment /
_cMuhammad Fahmi Jasri
260 _aKuantan, Pahang :
_bUMP,
_c2012
300 _axiv, 36 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Mechanical Engineering in Manufacturing) -- Universiti Malaysia Pahang -2012
504 _aBibliography : p.32-33
520 3 _aThis research investigated on machining performance of the coated carbide cutting tools with acid etching surface pretreatment. The main objective of this thesis is to investigate the effect of surface pretreatment using acid etching and physical vapour deposition coating (PVD) coating on tungsten carbide (WC) cutting tool. The effect of machining performance on tungsten carbide cutting tool using this pretreatment in term of wear rate also studied. The scope of work include tungsten carbide as cutting tool, acid hydrofluoric, HF for etching, PVD coating process and machining by turning operation. Tungsten carbide cutting tool was subjected to acid etching surface pretreatment for 20 minutes before it was deposited with PVD coating process. Next, the cutting tool was test by turning machine in order to determine the wear resistant and other material characterization also was performed such as surface morphology, hardness Vickers test and surface roughness test. The surface pretreatment with HF acid provide rough surface to tungsten carbide microstructure. Besides, the machining test performance shows the coated tungsten carbide with acid etching surface pretreatment provided longer tool’s life compared to original tungsten carbide and coated tungsten carbide without surface pretreatment cutting tools. In addition, the hardness test indicated that average Vickers hardness of original tungsten carbide specimen was 970.7 HV while coated tungsten carbide with acid etching pretreatment specimen was 1232.33 HV. In surface roughness test, the surface roughness of tungsten carbide increase after subjected to acid etching surface pretreatment but decrease after undergoes PVD coating process. From the result, the acid etching surface pretreatment and PVD coating process affect the mechanical properties of tungsten carbide cutting tool such as microstructure, hardness, surface roughness and wear resistance.
650 0 _aCutting tools
650 0 _aSurface (Technology)
999 _aVIRTUA40
_c4617
_d4623
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992