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008 090723t2008 my a f m 001 0 eng|d
020 _aTHE0007407(Local)
039 9 _a201905151159
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_dVLOAD
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_zida84
040 _aUMP
090 _aTN672 .C44 2008 rs Bc.
100 3 _aChew, Chun Chi
245 1 0 _aInternal structure change of carbon tool steel after heat treatment /
_cChew, Chun Chi
246 3 _aInternal structure change of carbon tool steel after heat treatment
_h[electronic resource]
260 _aKuantan, Pahang :
_bUMP,
_c2008
300 _a55 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Mechanical Engineering with Manufacturing) -- Universiti Malaysia Pahang - 2008
520 3 _aCarbon steel is normally used in the manufacture of chisels, tools parts where high hardness is required to maintain a sharp cutting edge. But, the most common problems we encountered are the short life of the tool. Hence, it is important to use a suitable medium for quenching process to extend the tool life. The main objective of this project is to analyze the internal structure of carbon steel after quenching process. Eventually, the most suitable medium for quenching carbon steel AISI 1045 will be recommended. A carbon steel rod with a diameter of 1.6cm was cut into the size of 2cm in length. Six specimens in the same dimensions were prepared. Each specimen’s surface was ground by using different grade of abrasive paper. After the grinding process, three out of six specimens were undergoing quenching process for one day in three different types of medium; which is oil, water and coolant. However, another three specimens were quenched for one day. After quenching process, all specimens were grinding again to retain shining surface. Diamond liquid was used to polish the surface and then the surface was etched by 2% nital. The internal structure of water and coolant quenching formed finer pearlite while oil quenching formed coarser pearlite. The structures formed have high hardness value ranged from 20.3 HRC to 47.5 HRC. The results were analyzed by using Rockwell hardness tester. The internal structure of specimen was analysed using microscope image analyser equipment and the results were displayed onto computer screen.-Author-
650 0 _aMetals
_xHeat treatment
650 0 _aMetals
_xQuenching
650 0 _aCarbon steel
999 _aVIRTUA40
_c1276
_d1282
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*6502*9992