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What metal would be better suited for heat transfer, reliability, and cost...??? I'm currently using Aluminum for a 'hot-wedge'.
3 6103i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect
IOCL,
2964I 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.
2385any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.
2268
What is iron ferrite and what is it used for, and where is it found?
State some precautions to be taken in case of powder metallurgy?
Where is iron ferite used?
The hardness of steel depends on
what is proeutectoid ferrite and cementite?
What are the compositions of brass, how can this metal be heat-treated, what is the melting point of this metal?
What is a master gauge ?
For what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
Differentiate between ferrite percentage and ferrite number?
How much gold is in a troy ounce?
What is dielectric medium in EDM ?
In grey iron sulpher was above 0.15% what react on metal?
Define what is carbide?
how would you find out the type of stailess steel that has been used to make your dish?
Define stiffness.
