Metallurgy Interview Questions
Questions Answers Views Company eMail

What kind of shell systems are used for investment casting?

2 3988

Why are the superalloys used for land-based turbines?

1 3307

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

2 3673

What kinds of NDT methods are available?

10 15939

Why is non-destructive testing necessary?

9 15115

What are the superalloys?

3 8049

What are the superalloys used for?

2 5047

what is the cause of attenuation due to powerloss

1 4037

what happens when a EM wave is transmitted

1 4299

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

1 3736

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

3 5379

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

IOCL,

2638

what are the ores of copper?

4 6181

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,

2043

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

Novellus,

1960


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Un-Answered Questions { Metallurgy }

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

619


Discuss steam engines. What is its overall efficiency ?

691


what is meant by hardening ability of metals?

638


dear sir i need some information about prevent eutectic carbide network(as cast) formation in 12% cr steel casting by another alloying element(my analays: c=1.2-1.4 cr=11-13 mo=0.2-0.4 ni=0.2-0.4 )or break network carbid after formation in solidification by heat tretment please help me my email adress: alloymail@gmail.com

2005


A cantilever beam carrying uniformly distributed load will be ?

643






Define what is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. When both are used in the lost-wax method?

638


how would you find out the type of stailess steel that has been used to make your dish?

635


WHAT IS THE ACTUAL DEFINATION OF PLANET?

3385


what are different grades of mild steel available for making machine structure (housing)

2631


Which plaster is used in gold investment casting?

633


Define boring.

782


Is it possible to use metallurgical inverted microscope to other designation?

662


What is tack welding ?

785


How can you separate gold from mercury?

694


Explain vacuum induction melting?

616