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Metallurgy Interview Questions
Questions Answers Views Company eMail

What kind of shell systems are used for investment casting?

 2 3716

Why are the superalloys used for land-based turbines?

 1 3145

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

 2 3449

What kinds of NDT methods are available?

 10 15164

Why is non-destructive testing necessary?

 9 14323

What are the superalloys?

 3 7716

What are the superalloys used for?

 2 4786

what is the cause of attenuation due to powerloss

 1 3871

what happens when a EM wave is transmitted

 1 4083

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

 1 3522

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

 3 5051

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

IOCL,

2492

what are the ores of copper?

 4 5778

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,

1910

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

Novellus,

1818

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Un-Answered Questions { Metallurgy }

What is the use of core prints?

619

difference between sand casting and shell casting

1323

What are the chemical composition of cast iron grade 20

1535

Which is the only liquid in which gold is dissolved?

535

Define what is or define what characterize the thermodynamic state of metal (structure of metal)?

506




What is the Equivalent for 9.81 kgf= ?

669

Define what are the compositions of brass, how can this metal be heat-treated, define what is the melting point of this metal?

505

What is M33×2

564

What is the specific heat value for solid ?

670

Define what is the metallurgy use? Define what is the casting and forging?

499

We make aluminum moulds by press casting, can u suggest any thing so that the moulds should shine after casting?

512

What is hot working of metals? Give some of its principal methods.

568

What is a silver in deming drill bit?

564

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

542

What are the characteristics of the thermodynamic stage of a metal?

538

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