What is spcc material?

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acetylene is stored in ?

0 Answers   NIC,

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Why post-heating is done in alloy steel welding?

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What are the effects of recrystallization of metals on alloying?

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Which of different types of cast irons is stronger? Is their strength superior to steels?

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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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where do i get previous question papers of metallurgy?

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What is the use of worm gears?

0 Answers   NIC,

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Does the extrusion process for a355 and a356 alloy effect on the amount of impact energy?

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What is galvanising?

0 Answers   NIC,

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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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How does iron and steel exhibit allotropy?

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