Why are the superalloys sometimes subjected to secondary
what is a rate controlling step ? how is it dependent on
reaction path ? explain with an example.
where do i get previous question papers of metallurgy?
does any one has gate solutions of 2007,08,09 metallurgical
sir please send me previous question papers on metallurgy at
email@example.com .....thank you
I currently use 17-7 PH stainless which is hardened to
condition CH after forming. raw matl is .1.75"X .12"
X .008". Its main usage after hardening is silicon wafer
retainer where it's contantly cycled up and down to putin
and remove wafer after 40-60 sec process at 400C temp. At
this high temperature this part seemed to deform after a a
couple of hundred wafer which is what it was designed for
in the first place. THere is a proposal to go to a
different material to increase lifeline of this part. My
question is..... can 321 SST be a plugin replacement. I
know this has a higher temp rating but how about its
forming characteristics, will it have spring properties,
and wont become brittle after prolonged exposure to 400C.
any input on how to spec out(if possible) a larger grain
structure(3/8" or larger) on a Al 6061 forging material.
1)We are using OHNS material for manufacturing Thread &
plain Gauges.What is the excat composition of OHNS for
2)Which is the reference standard book for OHNS Material
composition for Gauges?
white rust formation over zinc plated and passivated
fasteners during CED coating. WHY?
What is the difference between DI pipes, Cast Iron pipes, LA
Pipes, SW pipes, SWR Pipes, RCC hume pipe, RCC spun pipe ?
What are their IS codes and applications ?
How to melt the solidified copper accretions in copper
scrap melting furnace?
What is chemical composition and mechanical properties of
IS 2004,Gr-3 and IS 305 AB-2?
what are the causes of scaling in cast iron, after
subjecting it to annealing process.
WHAT IS THE ACTUAL DEFINATION OF PLANET?
Any body know when the medicals are starting for the BSI
P.O , if anybody got any call letter please let me know