Answer / bajrangi mishra

Spheroidising changes cementite from a lamella formation to
a formation based on an alpha ferrite matrix with particles
of spheroidal cementite (Fe3C)embedded. This resulting
steel has improved ductility and toughness compared to the
original steel with reduced hardness and strength.
This is done for ball bearings to avoid non-elastic
deformation of balls.

Answer / munendra kumar

it is done to reduce stress
concentration by making
spheroidised (round) grain
structure.because bearing are
subjected to the fatigue load
during its operation.stress
conc. is very dangerous in
fatigue load.

What is difference between concentricity & coaxiality for giving the geometrical tolerences?

2 Answers   Magna Infotech,

---

What is ps?

0 Answers  

---

What is diffrenece between Installation and Commissing ????

4 Answers   Reliance,

---

why we are not using the unit joule for torque instead of N-m.

18 Answers   BARC, ONGC,

---

What is Automatic gas pilot device?

1 Answers  

---

What is wet corrosion and galvanic corrosion?

0 Answers  

---

Explain why do the radiators in your house click when you start the heating system?

0 Answers  

---

what is the total power generated in india and in world?

1 Answers   Essar,

---

Why did you leave your last job?

1 Answers   IBEX, Nikhil Comforts, Ranbaxy, Sabic,

---

What are the safety devices that are fitted in a refrigeration system?

1 Answers   RRB, Samsung,

---

While selecting a diameter of 1 inch which pipe is better, ERW or Seamless ?? OR Out of ERW and Seamless which one gives good results for an impact force of 2700 N??

1 Answers  

---

Which material can be used for "wearing pad" used for sliding?

4 Answers  

---