The moment of inertia of an area is always least with respect to ?

0 Answers   NIC,

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How can you separate gold from mercury?

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What are the effects of recrystallization of metals on alloying?

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Is there a possibility of inducing stress cracking in an insulated stainless road tanker vessel (20 tonne capacity) if the vessel is subject to rapid filling (10 tonne /hr) with liquid methane (-160 c) assuming the vessel is at ambient. If so, where could I obtain suggested cooling rates?

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Is there any way through hardening and anodizing some type of aluminum, it could be as hard as steel? I have hardened steel rollers that run up and down on a ramp along with spring pressure. Alternatively, if you are familiar with snowmobiles, the rollers run on the helix on the secondary clutch.

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What is the chemical composition of FCVS350 ?

0 Answers   JSW,

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Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.

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Will aluminum alloy like 380 or 356 settle? Meaning while in “liquid form” above melting point will the heavier elements like copper, fe, silicon, zinc etc. Settle to the bottom of the liquid/molten aluminum after a period.

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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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Why is chromium molybdenum steels used to build pressure vessels? What is special about the properties of chromium molybdenum steels that make them ideal forpressure vessels?

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What is hot working of metals? Give some of its principal methods.

0 Answers   Essar,

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does any one has gate solutions of 2007,08,09 metallurgical engg papers?

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