MARC View

000			02158nam a2200241 a 4500
001			vtls000078491
003			KUKTEM
005			20251114204611.0
008			140522t2013 my a f m 000 0 eng d
020			_aTHE0005858(Local)
039		9	_a201905131648 _baida _y201405221418 _ztraining4
040			_aUMP
090			_aTA445 .A56 2013 rs Bc.
100	0		_aSiti Anom Lehan
245	1	4	_aThe effect of iron powder particle size to the cracked core defect - _ba case study on molded inductor (HM72A-12XXX) / _cSiti Anom Lehan
260			_aKuantan, Pahang : _bUMP, _c2013
300			_axv, 40 p. : _bill. (some col.) ; _c30 cm. + _e1 CD-ROM
502			_aProject paper (Bachelor of Manufacturing Engineering) -- Universiti Malaysia Pahang -- 2013
504			_aBibilography : p. 50
520	3		_aCracked core defect is a visible fracture or point of separation which appear on the surface of the part, but does not propagate through the entire thickness of the part. In semiconductor industries, it is a challenge to manufacture products that is free of crack defects. The effect of iron powder particle size to the cracked core defect has been studied in this research. This research is conducted at molded inductor section at BI Technologies Corporation Sdn Bhd. The part HM72A-12XXX series has been selected as a case study because it has the highest number of reject with the percentage of 34.1 percent. In order to obtain sample with different average particle size, two samples of iron powder from different supplier has been selected. These two powders are ATMIX11 and TP-18. The size of TP-18 is smaller than ATMIX-11, ranging from 6µm - 8µm while ATMIX-11 is 12µm after the particle size distribution analysis. The surface morphology, roughness and the width of crack are observed from the experimental results. The results show that a larger particle size is better than small particle size because the percentage of crack defect by using ATMIX-11 is lower than TP-18 which is 9.4 percent and 18.1 percent respectively.
650		0	_aCrack defects
999			_aVIRTUA40 _c4854 _d4860
999			_aVTLSSORT0080020004000900100024502600300050205040520065009992