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Q. Describe Dry and wet parting materials?
Dry parting materials: These are applied by dusting. These include : charcoal, ground bone and limestone, lycopodium(a yellow vegetable matter), tripolite(a silicate rock), ground nut shells, Talc(Magnesium silicate,3MgO,4SiO2.H2O)and Calcium phosphate.
Wet parting materials: These are not used with wooden patterns, but are used mostly in machine moulding when metal patterns are used. They are wax based preparation, petroleum jelly mixed with oil, paraffin and stearic acid.
Welding Process: There are many definition of a welding process. But the most comprehensive definition is below. Welding is defined as a "a localized coalescence of metals, wher
Q. What is Hot extrusion? Hot extrusion is a hot working process, which means it is done above the material's recrystallization temperature to keep the material from work harde
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Matter, Particle and Weight: Sol: Matter: Matter is anything which occupies space and have some mass, offers resistance to any stress, for example Iron, stone, air, Water.
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Derive the relation for a fin insulated at the tip and the heat dissipation?
Two Possible Materials for Casing Two possible materials for the casing would be a. Polypropylene or b. An aluminium 1/3 per cent silicon-casting alloy (LM6). Conclu
Determine force on a body to pull or push: Q: A wooden block having weight of 50N rests on the horizontal plane. Determine force required which is acted at an angle of 15° to
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