Answer / k.prakashchandra

For central OBC ,income limit has been raised to 6 lakhs by business only . Only the income of parents is to be considered

what medal conducts heat best?

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

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Define what is meant by hardening ability of metals?

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Why do metallurgy engineers so sucessfull in their profession so that they dont think beyond their dreams?

5 Answers   Magnum,

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What is the chemical composition of FCVS350 ?

0 Answers   JSW,

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How can Residual stresses in superalloy components can be minimised?

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Define surge tank.

0 Answers   Essar,

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what is widman statten structure?

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State some precautions to be taken in case of powder metallurgy?

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What is investment casting?

3 Answers  

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How does and why the recrystallization temperature of the metals affects on alloying?

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I currently use 17-7 PH stainless which is hardened to condition CH after forming. raw matl is .1.75"X .12" X .008". Its main usage after hardening is silicon wafer retainer where it's contantly cycled up and down to putin and remove wafer after 40-60 sec process at 400C temp. At this high temperature this part seemed to deform after a a couple of hundred wafer which is what it was designed for in the first place. THere is a proposal to go to a different material to increase lifeline of this part. My question is..... can 321 SST be a plugin replacement. I know this has a higher temp rating but how about its forming characteristics, will it have spring properties, and wont become brittle after prolonged exposure to 400C.

0 Answers   Novellus,

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