HOW TO GET LAST 10 YRS. QUESTION PAPERS

0 Answers   ONGC,

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What is the specific speed of a pump ?

0 Answers   NIC,

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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?

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Why we are doing post heating in alloy steel welding?

0 Answers  

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What are the superalloys?

3 Answers  

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Which liquid can dissolve gold?

0 Answers  

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how do you prefer your name with initials to be stated in written communication

3 Answers   Ascent, L&T,

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what is the grain size of lead as an element and as an alloy such as lead tin alloy?

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Where is iron ferite used?

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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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Discuss steam engines. What is its overall efficiency ?

0 Answers   Essar,

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How is solution annealing carried out? What type of furnace is required?

0 Answers  

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