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

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Define what is the casting and forging?

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The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing

0 Answers   Leader Valves,

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Are the grain boundaries a continuation of regular lattice structure from one grain to another? Explain.

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When we do cardonitriding or casehardening operation for a plain carbon steel the case depth, hardness & microstructure are not alike why and what are the basicthing, which makes such a difference.

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Define what is proeutectoid ferrite and cementite?

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Define knurling.

0 Answers   Essar,

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HOW TO GET LAST 10 YRS. QUESTION PAPERS

0 Answers   ONGC,

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When using mercury to recover very, fine gold from ore, what is the best way to separate the gold laden mercury from the ore?

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

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what is the metallurgy use?

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Define what medal conducts heat best?

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