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Q. Describe the type of Facing and Backing sand?
Facing sand. This sand is used directly next to the surface of the pattern and comes into contact with the molten metal when the mould is poured. As a result, it is subjected to the severest conditions and must possess, therefore, high strength and refractoriness. This sand also provides a smoother casting surface and should be of fine texture. It is made of silica sand and clay, and some additives without the addition of used sand. The layer of facing sand in a mould usually ranges from 25-50mm.
Backing Sand. This is the sand which is used to back up the facing sand and to fill the whole volume of the flask. Old, repeatedly used moulding sand is mainly employed for this purpose.
Four diametrically opposed in vessels up to pilot scale. More applied in production vessels. Thickness typically 0.1 - 0.05 tank diameter. Baffle height is dependent on the gas
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Q. Explain about Vertical Vessels? Vertical vessels shall normally be designed as self-supporting units, and shall resist overturn based upon wind or earthquake considerations.
how will you detect the depth of sea and application?
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a) You have been assigned to design a robotics spot welding experiment for low carbon steel sheets. You found an experimental power source for spot welding process which is designe
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