Answer / anil kamat

During plating of cast iron fasteners , when the fasteners
are dipped in the Acid tank , metal reacts with acid thus
lierating free hydrogen which then is absorbed by surface
of metal forming hydrates.
To remove these entrapped hyrogen , process of
deembritlement is adopted which is by baking
the fasteners at about 200 degrees and holding for some
timeat that temperature and gradual cooling.

Answer / vimal.v.p

The brittleness induced as a result of Diffusion of Hydrogen
atoms into metallic lattice is known as Hydrogen embrittlement.

This happens in Fasteners during the wire
preparation stage when the raw wire is in contact with HCl
in derusting tanks. When Metal react with Acid , Hydrogen
is liberated , which will be absorbed by metallic surfaces.

Also This phenomenon is sound during electroplating
of high grade fasteners, which will be rectified by baking
the fasteners at about 200 degrees and holding for some time

What kind of materials should be used for shafts manufacturing?

0 Answers  

---

What is the difference between isotropic and anisotropic materials ?

0 Answers  

---

whats the coloring code of a air to open or a air to close valve?

0 Answers  

---

if u r sailing on aboat with ur boss n a customer n d boat is sinking whom wud u save if u had only one choice to save betn boss n the customer???why???

3 Answers  

---

what is the three phase induction motor? what is difference between motor used in household instruments and induction motor?

0 Answers   Essel,

---

In a Steam Turbine, where does the maximum loss of efficiency occur ?

14 Answers   MahaGenco,

---

i require technical question paper which has been asked in last railway recruitment board exam for the post of junior engr.

0 Answers   RRB,

---

how to calculate the size and weight of induced draft axial fan impeller

0 Answers  

---

what are types of pupms???

1 Answers  

---

What is isometric drawing?

0 Answers  

---

Hello sir i had completed my BE in production engg.After diploma in mechanical engg.now i want to do BE in mechanical engg.that is double degree.Anyone can please tell me is there any provision to do this and how much is course duration.

1 Answers  

---

how to calculet the volume of torispherical head in pressure vessle design?

1 Answers   Debre Markos University,

---