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Metallurgy Interview Questions
Questions Answers Views Company eMail

What kind of shell systems are used for investment casting?

2 3338

Why are the superalloys used for land-based turbines?

1 2921

What kind of components are fabricated from the superalloys, and what are their roles?

2 3153

What kinds of NDT methods are available?

10 14051

Why is non-destructive testing necessary?

9 13405

What are the superalloys?

3 7245

What are the superalloys used for?

2 4401

what is the cause of attenuation due to powerloss

1 3615

what happens when a EM wave is transmitted

1 3812

Please send me the comparision of Mils Steel Specification as per BS EN 10130 & IS 2062

1 3227

What metal would be better suited for heat transfer, reliability, and cost...??? I'm currently using Aluminum for a 'hot-wedge'.

3 4687

i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect

IOCL,

2284

what are the ores of copper?

4 5215

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.

Novellus,

1752

any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.

Novellus,

1676


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Un-Answered Questions { Metallurgy }

Define what are metallurgical microscopes?

419


What is the use of gap(snap)gauge

561


what is wedge load test method . what is offset method .

1240


What does allotropic mean?

390


carnot cycle has maximum efficiency for ?

446






Define what medal conducts heat best?

423


When a spring is cut into two, stiffness becomes ?

439


Describe strain aging based on dislocation theory?

391


what is the different between ferrite percentage and ferrite number?

363


Differentiate between ferrite percentage and ferrite number?

412


Why we are doing post heating in alloy steel welding?

458


Define what is the chemical composition of ceramic and define what is its atomic density?

360


When using mercury to recover very, fine gold from ore, what is the best way to separate the gold laden mercury from the ore?

368


what are the causes of scaling in cast iron, after subjecting it to annealing process.

1793


What is duplex and super duplex steel?

386