What metal would be better suited for heat transfer, reliability, and cost...??? I'm currently using Aluminum for a 'hot-wedge'.
3 5074i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect
IOCL,
2502I 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.
1919any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.
1827
what is a rate controlling step ? how is it dependent on reaction path ? explain with an example.
Which liquid would oyu use to dissolve gold?
How do you express pitch of gears?
In welding, arc is too long due to ?
is nickel considered a non-sparking metal?
How does iron and steel exhibit allotropy?
For what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
What happens when the mercury of a thermometer spills over the gold ring?
What is the difference between diagrams of it and ct in heat treatment of steels?
Define what is the minimum temperature for stress relieving of astm a 519 gr.4130 material and please tell us where we can find the location.
What are carbides?
How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution?
The hardness of steel depends on
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?
what are metallurgical microscopes?
