International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 07 Issue: 01 | Jan 2020
p-ISSN: 2395-0072
www.irjet.net
Grain fineness number (GFN) =
Grain fineness number (GFN) 16.74 determined by experiment is very small number, it indicates this sand is very coarse which has very small fineness number less than the average fineness number which varies for cast iron from 45-65 and light alloys(e.g.Aluminium) 70-100 [13]. Table 2. Measured and calculated sieve analysis data Diameter of Sieve hole
Sieve No. 6 mesh 12 mesh 20 mesh 30 mesh 40 mesh 50 mesh 70 mesh 100 mesh 140 mesh 200 mesh 270mesh Pan
Weight of sieve
3.35mm 4.70mm 850mm 600 µm 425 µm 300 µm 212 µm 150 µm 106 µm 75 µm 5.3 µm
482.52 407.42 370.84 349.17 339.26 331.06 307.73 306.12 306.14 300.34 293.76 276.56
Weight of Retained sand sieve 488.89 416.57 389.30 355.29 342.01 332.54 308.84 306.91 306.71 300.71 293.84 276.563
Weight retained sand (g)
(%)
6.37 9.15 18.46 6.12 2.75 1.48 1.11 0.79 0.57 0.37 0.08 0.003
13.46% 19.34% 39.02% 12.95% 5.82% 3.14% 2.34% 1.68% 1.21% 0.79% 0.17% 0.01% 99.93
Total
Multiplying Factor 2 6 12 20 30 40 50 70 100 140 200 270
Product 26.92 116.04 468.24 259 174.6 125.6 117 117.6 121 110.6 34 2.7 1673.3
Chemical Composition analysis for sample defective product The test was conducted in foundry laboratory of Akake basic metals industry, Ethiopia. Laboratory equipment used: Spectrometer Sample of defective cast iron part was taken and the following composition analysis was found. Table.3 Composition of cast iron sample C 3.67
Si 2.00
Mn 0.482
P 0.183
Ti 0.027
V W 0.016 <0.040
S 0.164
Cr 0.074
Mo Ni <0.003 0.057
Pb <0.010
Sn Mg 0.006 <0.002
Al 0.025
As Zr 0.016 <0.003
Co Cu <0.009 0.092
Nb <0.005
B Fe <0.001 93.1
Composition of metal determines the desired strength and metallurgical structure of the parts to casted. In case of ferrous casting, it is necessary to know the percentage of Carbon, Silicon, Sulphur, Manganese, and Phosphorous © 2020, IRJET
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