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.
469What is the melting point of e70 steel, 304,308,316 stainless steels? In addition, what is the hottest part of the flame in a fire?
511Why is chromium molybdenum steels used to build pressure vessels? What is special about the properties of chromium molybdenum steels that make them ideal forpressure vessels?
506How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? Whatis the ratio of dbc to oxalic acid solution in this step?
585How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny?
523What is the metallurgical explanation of effects of chromium, nickel, molybdenum, and carbon in stainless steels?
487
A cantilever beam carrying uniformly distributed load will be ?
The Hardness of wheel(or)grade of wheel refers to the
what is meant by hardening ability of metals?
Discuss advantage of different types of screw.
What is the use of worm gears?
What Is cold working of metals? Give some of its principal methods.
Define what other events in history might have affected the growth of metallurgy?
What happens when the mercury of a thermometer spills over the gold ring?
What is the chemical composition of FCVS350 ?
Define boring.
What is iron ferrite and what is it used for, and where is it found?
Which metal is the best conductor of heat?
acetylene is stored in ?
Where is mangenese steel used?
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
