What metal would be better suited for heat transfer, reliability, and cost...??? I'm currently using Aluminum for a 'hot-wedge'.
3 4687i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect
IOCL,
2284I 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.
1752any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.
1676
Define what are metallurgical microscopes?
What is the use of gap(snap)gauge
what is wedge load test method . what is offset method .
What does allotropic mean?
carnot cycle has maximum efficiency for ?
Define what medal conducts heat best?
When a spring is cut into two, stiffness becomes ?
Describe strain aging based on dislocation theory?
what is the different between ferrite percentage and ferrite number?
Differentiate between ferrite percentage and ferrite number?
Why we are doing post heating in alloy steel welding?
Define what is the chemical composition of ceramic and define what is its atomic density?
When using mercury to recover very, fine gold from ore, what is the best way to separate the gold laden mercury from the ore?
what are the causes of scaling in cast iron, after subjecting it to annealing process.
What is duplex and super duplex steel?
