Answer / vignesh

ANNEALING - heating the material and cooling in furnace/air
to impart ductility,relieve stress,
TEMPERING - reheating below critical temperature after
quenching to increase ductility.
NORMALIZING- heating to achieve even grain structure.remove
effects of previous heat treatment

Answer / sunny

Annealing : Its a process in which first the component is
heated till austenitising temperature & then cooled by
keeping furnace off so that to increase ductility.

Normalising : Hardening process where the component is air
cooled after heating till austenitising temperature.

Tempering : After hardness, tempering is done to increase
ductility.

Answer / sunil

annealing-reduces hardness
normalising-incresses hardness
tampering- improve toughness

Answer / karthick

All are different heat treatment process.In general heat
treatment process is used to impart desired mechanical
properties to materials.Annealing is the process of heating
the material and holding that for some time and then
cooling it in suitable rate(in air).it is used to refine
the grain size,to relieve the internal stresses.Tempering
is the process of heating the hardened material.it is used
to impart toughness.Normalizing is the process of heating
40 deg above recrystallization temp and cooling it in
furnace

What is the Full form of AIF in Compressors ?

5 Answers   MAHINDRA,

---

general diesel engine we are using 15w 40 oil unfortunatley our oiller mis used the oil hudralic oil refilled when he doing the service which kind proplem coming in future?

0 Answers   Cummins,

---

WHAT IS A TR REQUIRED IF AIR FLOW 6500 CMH COIL INLET TEMP 7 - 12 DEGREE C AIR TEMP INLET - 18 DEGREE C & REQUIRED TEMP IS 12 DEGREE C

0 Answers   TATA,

---

Is the hvac machines are designed 10% less than the electrical feeder value?

0 Answers  

---

what is fullform of ge 9ea gas turbine

0 Answers   Qatar Petroleums,

---

how we have to face the interview?

0 Answers   Apollo Tyres, Omax, Toyota,

---

Distinguish between the shear center and elastic center.

0 Answers  

---

What does Nominal size in a valve means like NG6,NG10 etc

0 Answers  

---

What are the function of transduser,velocity sensor?

2 Answers   IOCL,

---

Please send me technical paper of ONGC for Mechanical branch.I am in need of the paper.Pls send me.

3 Answers   ONGC,

---

Draw the flow of F.O. diagram from service tank to Main Engine?

0 Answers   Nissan, Renault Nissan, RRB,

---

i have 3sge type g rav 4 1997 can i modyfied my engine to dual vvti 3sge

1 Answers   Jaypee, Toyota,

---