Define what is the different between ferrite percentage and ferrite number?

0 Answers  

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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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What are carbides?

0 Answers  

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Why cutting fluid is used in machining?

0 Answers   NIC,

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diffrent beetwen eutoctoid &eutectic steel

8 Answers   KRL, Qatar Steel,

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Which pump is preferred for small discharge at high pressure?

0 Answers   NIC,

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Define surge tank.

0 Answers   Essar,

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What are the allotropes of iron and carbon?

0 Answers  

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What is equivalent is 2004 cl 5

0 Answers  

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Water hammer in pipes occur due to ?

0 Answers   NIC,

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Why duplex or super duplex stainless steels are welded with low heat input type electrode?

0 Answers  

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How can Residual stresses in superalloy components can be minimised?

1 Answers  

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