DESIGN AND FABRICATION OF DRAIN COVER BY CASTING ...

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153.5 Material Selection3.5.1 Material Selection Criteriai. Easy for machiningIn this project, the drain cover will be trimmed by cutting machine. The materialmust be ductile and soft or easy to machining by any cutting machine.ii.Anti rustingThe material must be anti-corrosion.iii.StrongThe material must able to stand high load without breaking or bending.iv.Low melting pointThe material need to have low melting point to easy the melting process in thefurnace.v. WeightThe material must be lightweight.vi.CostThe material cost must not be too expensive and affordable to everyone. Thequality must balance with the cost.
163.6 Pattern MakingTo proceed for the fabrication process, the pattern of the drain covers must be madefirst. There are different ways on how to makes the pattern. Material used to make thepattern may be different according to the product. However in this process plywood areused to make as the drain cover pattern. The steps of pattern making are shown asbelow:-i. Measuring and marking processii. Cutting processiii. Shapingiv. Tapering/ChamferingFigure 3.1: Drain cover patternFigure 3.1 shows the top view of the drain cover pattern.
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: 3.4 Finalize concept14
Page 23 and 24: 18i. Mold makingFirst step in sand
Page 25 and 26: 20ii.Clamping ProcessThe molten cas
Page 27 and 28: 22Figure 3.8: Removal processvi.Tri
Page 29: 24Figure 3.4 shows top view of the

DESIGN AND FABRICATION OF DRAIN COVER BY CASTING ...

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