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

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Why steel is preferred for construction of aircraft?

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Define knurling.

0 Answers   Essar,

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Define rivets.

0 Answers   Essar,

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What is iron ferrite and what is it used for?

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

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What is the Equivalent for 9.81 kgf= ?

0 Answers   NIC,

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what is the chemical composition of ceramic and define what is its atomic density?

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Can you explain the refrigeration cycle?

0 Answers   Essar,

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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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IS:1239 same code for MS ERW and Seamless pipes ?

1 Answers  

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How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? Whatis the ratio of dbc to oxalic acid solution in this step?

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