Fundamental of metal casting, Electrical Engineering

Fundamental of Metal Casting:

Fundamental of Metal Casting : Casting process is based on the property of a liquid to take up the shape of vessel containing it. Molten metal poured into a mould flows into the corners and fills all the voids. When metal solidifies it takes the shape of mould but not exactly the same because solid being. denser there is reduction of volume (2  to  9%). For obtaining correct dimensions, provision needs to be made for shrinkage of metal. Hollow components can be produced by inserting a core into the cavity in the mould.

Sand Casting : Sand castings are porous enough and, therefore, cannot be used for pressure sight vessels. Structure obtained by sand casting is loose and hence not stranger than wrought products. As the grains are not close, the casting has lower density and poor strength. Sand casting has poor ductility.

Shell-mould Casting : This is variant of the resin bonded sand technique for casting steel, iron or non-ferrous alloys.

The mould is formed from a mixture of fine sand (100 - 150 mesh) and a thermosetting resin binder that is placed against a heated metal pattern, preferably made of grey cast iron.

Posted Date: 2/8/2013 5:03:18 AM | Location : United States







Related Discussions:- Fundamental of metal casting, Assignment Help, Ask Question on Fundamental of metal casting, Get Answer, Expert's Help, Fundamental of metal casting Discussions

Write discussion on Fundamental of metal casting
Your posts are moderated
Related Questions
how to design colpitts oscillator?

ie rule for guard wire

Q. Effect of feedback on sensitivity to parameter changes? A good control system, in general, should be rather insensitive to parameter variations, while it is still able to fo

Q. Write a note on feedback of emitter follower? The emitter follower can be seen to be an example of negative feedback when the relationship is put in the form

Background of Energy Conservation As a thumb rule, the energy needs of a country are about 1.5 times its GDP or the economic growth rate. India's projected growth rate up to

Q. Read-and-write memory? Writing is the same as storing data intomemory and reading is the same as retrieving the data later. RAM is said to be volatile because its contents a

Case 2 ( A>B) Suppose XX = 05H ( stored  in A ) And  YY = 02H ( stored  in B). Then carry  flag will  reset by CMP instruction, since  A> B in this  case JNC  will transfer the

Q. Explain about Differentiator? Shown in Figure is a differentiator which is obtained by replacing R1 in the inverting amplifier of Figure by a capacitor C. Assuming ideal op-

Explain temperature dependence of electrical resistivity and conductivity in semiconductors. The electrical conductivity of the semiconductors changes considerably with temper

it''s 3 assignments and each assignment have 7 questions so each assignment have 1 hour when I open it I have only 1 hour to finish it I can show him or her the practice question t