Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / guest
sulphide ore:
chalcopyrite
chalcocite
bornite
oxide ore
malachite
azurite
cuprite
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Explain heat treatment of brass?
What is the atomic density of ceramics?
In welding, arc is too long due to ?
How can you find out what kind of stainless steel was used in making a stainless object?
Why is it so hard to find literature on the wear resistance of titanium?
Which of different types of cast irons is stronger? Is their strength superior to steels?
what are the causes of scaling in cast iron, after subjecting it to annealing process.
Differentiate between 304 and 316 grades of steel?
How to calculate heat affected zone in weld?
Which type of key is used between shaft and pulley?
The stress concentration is caused due to ?
Is it possible to use metallurgical inverted microscope to other designation?
what is the chemical composition of ceramic and define what is its atomic density?
Why post-heating is done in alloy steel welding?
The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing
