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
1754On 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?
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How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? Whatis the ratio of dbc to oxalic acid solution in this step?
Is there a possibility of inducing stress cracking in an insulated stainless road tanker vessel (20 tonne capacity) if the vessel is subject to rapid filling (10 tonne /hr) with liquid methane (-160 c) assuming the vessel is at ambient. If so, where could I obtain suggested cooling rates?
Define what is the minimum temperature for stress relieving of astm a 519 gr.4130 material and please tell us where we can find the location.
what is special about the properties of chromium molybdenum steels that make them ideal for pressure vessels?
A cantilever beam carrying uniformly distributed load will be ?
Define what is the chemical composition of ceramic and define what is its atomic density?
Define stiffness.
Explain stress corrosion cracking?
What is the specific heat value for liquid ?
Unlike materials as well as materials of different thickness can be butt welded by ?
What is iron ferrite and what is it used for?
When a spring is cut into two, stiffness becomes ?
Discuss advantage of different types of screw.
Define what is the metallurgical explanation of effects of chromium, nickel, molybdenum, and carbon in stainless steels?
The moment of inertia of an area is always least with respect to ?
