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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
2225On 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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Is it possible to use metallurgical inverted microscope to other designation?
Define what is a silver and deming drill bit?
Differentiate between stainless steel and alloy steel?
What is the melting point of e70 steel, 304,308,316 stainless steels?
what is widman statten structure?
What are the componentsof SCS14 ?
Why steel is preferred for construction of aircraft?
Which of different types of cast irons is stronger? Is their strength superior to steels?
What is the critical speed of shaft?
Explain the uses of iron ferrite?
Which metal is the best conductor of heat?
Explain the concept of casting and forging?
any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.
Why is chromium molybdenum steels used to build pressure vessels? What is special about the properties of chromium molybdenum steels that make them ideal forpressure vessels?
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? Define what is the ratio of dbc to oxalic acid solution in this step?
