what is the meaning(definition)of EN grade of steel and also tell whats the full name of EN?

15 Answers   Hitachi, Mecon,

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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 type of key is used between shaft and pulley?

0 Answers   NIC,

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What do you do with the super alloys in the present working culture so as to improve the technology for general people?

2 Answers   Magnum,

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HOW TO GET LAST 10 YRS. QUESTION PAPERS

0 Answers   ONGC,

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Define what is the casting and forging?

0 Answers  

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Define what are metallurgical microscopes?

0 Answers  

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what are different grades of mild steel available for making machine structure (housing)

0 Answers  

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Why post-heating is done in alloy steel welding?

0 Answers  

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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?

0 Answers  

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Explain wear resistance of titanium?

0 Answers  

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What is the critical speed of shaft?

0 Answers   Essar,

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