DESIGN AND FABRICATION OF DRAIN COVER BY CASTING ...

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21iii.Pouring ProcessA piece or block of cast iron is heated until melted in a furnace and maintained at aset of temperature. Then the molten cast iron is ladled from it holding container inthe furnace and then poured into the cavity of the mold. The molten cast iron must beenough to fill the entire cavity and all channels in the mold. The pouring of moltenaluminum is doing faster enough to prevent from early solidification of any parts ofthe metal.iv.Cooling ProcessThe molten metal that is poured into the mold cavity is leaves to cool and solidify.When the entire cavity is filled and the molten cast iron solidifies the final shape ofdrain cover is formed. The mold however cannot be opened until the cooling timehas elapsed.v. Removal ProcessAfter the predetermine solidification time has passed, the mold is opened and thesand mold is removed. This step uses vibration machine or anything that shakes thesand.
22Figure 3.8: Removal processvi.Trimming ProcessDuring cooling the material from the channels in the mold solidifies attached to thepart. In this process, the excessive part must be trimmed from the casting manuallyusing cutting machine.
Page 3 and 4: viiTABLE OF CONTENTSCHAPTER TITLE P
Page 6: 1CHAPTER 1Introduction1.6 Backgroun
Page 9 and 10: 41.6 Grant chartFigure 1.2 shows th
Page 11 and 12: 6Normal types of drain cover are a
Page 13 and 14: 8Table below shows quick details of
Page 15 and 16: 10CHAPTER 3Methodology3.1 Project M
Page 17 and 18: 123.3.1 Preliminary Concept DesignT
Page 19 and 20: 3.4 Finalize concept14
Page 21 and 22: 163.6 Pattern MakingTo proceed for
Page 23 and 24: 18i. Mold makingFirst step in sand
Page 25: 20ii.Clamping ProcessThe molten cas
Page 29: 24Figure 3.4 shows top view of the

DESIGN AND FABRICATION OF DRAIN COVER BY CASTING ...

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