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

When austenitized, carbon steel is quenched, why is the bcc crystal elongated into a body-centered tetragonal crystal structure?

0 Answers  

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difference between sand casting and shell casting

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Which plaster is used in gold investment casting?

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Why cutting fluid is used in machining?

0 Answers   NIC,

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sir please send me previous question papers on metallurgy at vishal.nitrr07@gmail.com .....thank you

0 Answers  

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Define knurling.

0 Answers   Essar,

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Define what are the compositions of brass, how can this metal be heat-treated, define what is the melting point of this metal?

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What is select miller cutter?

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Discuss about advatages and limitations of powder metallurgy.

0 Answers   John Deere,

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what is a rate controlling step ? how is it dependent on reaction path ? explain with an example.

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

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Which type of key is used between shaft and pulley?

0 Answers   NIC,

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