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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How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny?

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Discuss about advatages and limitations of powder metallurgy.

0 Answers   John Deere,

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Explain proeutectoid ferrite

1 Answers  

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What are the allotropes of iron and carbon?

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Which type of key is used between shaft and pulley?

0 Answers   NIC,

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What is the use of worm gears?

0 Answers   NIC,

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How can you find out what kind of stainless steel was used in making a stainless object?

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hi. can SB164 forge or not?

1 Answers  

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