000			02615cam a2200325 a 4500
003			EG-GiCUC
008			170919s2017 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.13.M.Sc.2017.As.E
100	0		_aAshraf Talaat Hamed Kadous
245	1	0	_aEffect of coke size on the mechanical and wear properties of carburized mild steel / _cAshraf Talaat Hamed Kadous ; Supervised Mahmoud A. Adly , Emad Elkashif , Ahmed Y. Shash
246	1	5	_aتأثير حجم حبيبات الفحم على الخواص الميكانيكية والبرى لصلب منخفض الكربون المكربن
260			_aCairo : _bAshraf Talaat Hamed Kadous , _c2017
300			_a50 P. : _bcharts , facsimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
520			_aThe aim of this research is to investigate the effect of various coke sizes on the carburizing process of mild steel, this effect is evaluated through measurement of the mechanical properties and wear resistance for different carburizing condition therefore five sets of samples were prepared and carburized at different temperatures and times. Three sets were carburized at 850oC, 900 oC and 950oC for 120 min. while two other sets are carburized at 1000oC and 1050 oC for 60 min. All sets were carburized using three different sizes of coke namely A (< 0.4 mm), B (1 : 1.6 mm) and C (4 : 5 mm ). After carburization all sets were quenched in water and then tempered at 200oC for 15 min. After tempering, different mild steel samples were subjected for microstructure observation, hardness test, Charpy impact test, tensile testing and adhesive wear test. The experimental results were analyzed and shows that mild steels carburized at 1050oC with intermediate coke grain size B (1 ~ 1.6 mm) gives the optimum results for the mechanical and wear properties which may be due to the microstructure obtained at this temperature (martensitic case and bainitic core). This indicates that coke size B gives the optimum combination of surface area and porosity needed for the reaction kinetics
530			_aIssued also as CD
653		4	_aCoke Size, Mechanical Properties
653		4	_aMild Steel, Carburization
653		4	_aWear resistance
700	0		_aAhmed Y. Shash , _esupervised
700	0		_aEmad Elkashif , _esupervisor
700	0		_aMahmoud A. Adly , _esupervisor
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c62406 _d62406