Answer / anil kamat

If it is a free flow single gate single runner casting then
the density variation leads to the diffrence in properties
across various sections. To get uniform density variation
usually pressure flow multigate multirunner castings are
preferred.

Answer / preethi

uneven solidification results in different grain size and
that leads to the difference in hardness. the surface of the
cast will have finer grains due to faster solidification
(comparatively high temperature gradient) than the core.

Answer / shashikant g. sane

The casting must have solidified with uneven cooling rates.
So the part that has cooled faster has developed extra
hardness.

Answer / hardik

due to segrigation

Do you know define what metal might be considered the “most environmental”? I say aluminum because it can be recycled others on my team say brass.

0 Answers  

---

what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

0 Answers  

---

How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a salt bath?

0 Answers  

---

What Is cold working of metals? Give some of its principal methods.

0 Answers   Essar,

---

What is a silver in deming drill bit?

0 Answers  

---

When might secondary melting processes be unnecessary?

2 Answers  

---

How can you find out what kind of stainless steel was used in making a stainless object?

0 Answers  

---

Which plaster is used in gold investment casting?

0 Answers  

---

is nickel considered a non-sparking metal?

0 Answers  

---

Which type of key is used between shaft and pulley?

0 Answers   NIC,

---

Define what is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. When both are used in the lost-wax method?

0 Answers  

---

acetylene is stored in ?

0 Answers   NIC,

---