Answer / yamuna

Spreading of atoms is called diffusion

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

0 Answers  

---

Define what is special about the properties of chromium molybdenum steels that make them ideal for pressure vessels?

0 Answers  

---

How can you separate gold from mercury?

0 Answers  

---

Will aluminum alloy like 380 or 356 settle? Meaning while in “liquid form” above melting point will the heavier elements like copper, fe, silicon, zinc etc. Settle to the bottom of the liquid/molten aluminum after a period.

0 Answers  

---

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

0 Answers   Leader Valves,

---

WHAT IS THE ACTUAL DEFINATION OF PLANET?

0 Answers  

---

How 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? Define what is the ratio of dbc to oxalic acid solution in this step?

0 Answers  

---

Is there a possibility of inducing stress cracking in an insulated stainless road tanker vessel (20 tonne capacity) if the vessel is subject to rapid filling (10 tonne /hr) with liquid methane (-160 c) assuming the vessel is at ambient. If so, where could I obtain suggested cooling rates?

0 Answers  

---

The main metal used by the Indus Valley people was

4 Answers   RRB,

---

Explain any method through which molds can shine after casting?

0 Answers  

---

what is the difference between EN19 & EN24 Grade?

3 Answers   SEIPL,

---

What affect would increasing the charpy impact toughness on an object have on the surface of an object it strikes if all else remains the same? Would it cause moredamage to the object it strikes?

0 Answers  

---