(a) Describe the process steps in sand casting? Compare to die
casting, what are some major advantages and disadvantages of sand
casting?
(b) Describe the process steps in investment casting?
(c) Describe the process of hot-chamber and cold-chamber die
casting. What are the most attractive features for each process?
13. Describe the process steps in sand casting? Compare to die
casting, what are some major advantages and disadvantages of sand
casting? 14. A large steel sand casting shows the characteristic
signs of penetration defect – a surface consisting of a mixture of
sand and metal. (a) What steps can be taken to correct the defects?
(b) What other possible defects might result from taking each of
these steps? 15. Using an explicit sketch to illustrate and
describe the process...
Explain the historical circumstances and events described in the
film that led to the “lost boys” of Sudan being displaced/forced to
leave Sudan and forced to live in UN refugee camps for the duration
of their childhood years.
https://www.youtube.com/watch?v=t3YdAcMENbk
1)Describe what a “riser” is in the context of sand casting.
What are its functions?
In light of Chvorinov’s rule, what should be taken into account
when determining the geometry, dimension, and
location of a riser in a sand casting
mold?
1)Describe what a “riser” is in the context of sand casting.
What are its functions?
In light of Chvorinov’s rule, what should be taken into account
when determining the geometry, dimension, and
location of a riser in a sand casting
mold?
If sample was lost during the heating process, would the mass of
water lost be too high or too low? Would this experimental error
result in a value of n that is too large or too small?
If some water remained at the end of the heating process, would
the calculated mass of water lost be too high or too low? Would
this experimental error result in a value of n that is too large or
too small?