Which type of furnace is required in solution annealing?

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what is meant by hardening ability of metals?

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Explain the concept of casting and forging?

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Explain dislocation theory?

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What type of grinding is used for harder materials?

0 Answers   NIC,

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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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Which is stronger, tungsten or titanium?

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Describe strain aging based on dislocation theory?

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What is the Difference of ultimate tensile stress of mild steel to ultimate compressive stress ?

0 Answers   NIC,

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Give example of heterogeneous systems.

0 Answers   Essar,

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What is the chemical composition of ceramics?

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What is the use of worm gears?

0 Answers   NIC,

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