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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
2160On which basis annealing cycle of steel bars of UpTo 6 MTR can be decided.we r charging 40-45 metric ton load for annealing in bogie furnace?
1390
How can you find out define what kind of stainless steel was used in making a stainless object?
The moment of inertia of an area is always least with respect to ?
Why cutting fluid is used in machining?
Which method has more procity in cast part? Which method has more strength in cast part?
What is d2?
On which basis annealing cycle of steel bars of UpTo 6 MTR can be decided.we r charging 40-45 metric ton load for annealing in bogie furnace?
What is the function of washer?
acetylene is stored in ?
1)We are using OHNS material for manufacturing Thread & plain Gauges.What is the excat composition of OHNS for Gauges? 2)Which is the reference standard book for OHNS Material composition for Gauges?
does any one has gate solutions of 2007,08,09 metallurgical engg papers?
What is chemical composition and mechanical properties of IS 2004,Gr-3 and IS 305 AB-2?
What are the chemical composition of cast iron grade 20
For what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
Throw some light on hardening abilities of metals?
How one can differentiate between 304 & 316 grades of steel (physically)?
