white rust formation over zinc plated and passivated
fasteners during CED coating. WHY?
When we do cardonitriding or casehardening operation for a plain carbon steel the case depth, hardness & microstructure are not alike why and what are the basicthing, which makes such a difference.
carbon-3.23%,manganese-0.60%,silicon-2.25%,sulphur-0.086%, phosphorus-0.122%,chromium-0.04%,nickel-0.10%,molybdenum- trace.
Explain vacuum induction melting?
what is the grain size of lead as an element and as an alloy such as lead tin alloy?
Will aluminum alloy like 380 or 356 settle? Meaning while in “liquid form” above melting point will the heavier elements like copper, fe, silicon, zinc etc. Settle to the bottom of the liquid/molten aluminum after a period.
What is iron ferrite?
State some precautions to be taken in case of powder metallurgy?
What is combine power generation?
What affect would increasing the charpy impact toughness on an object have on the surface of an object it strikes if all else remains the same? Would it cause moredamage to the object it strikes?
Explain stress corrosion cracking?
What is the function of washer?
sir please send me previous question papers on metallurgy at vishal.nitrr07@gmail.com .....thank you
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