Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Quenching and Tempering
Cast iron pearlite structure might be heated to lower critical temperature and after that quenched to effect extremely rapid cooling. This treatment reasons the precipitation of hard martensite phase and casting is hence capable of giving high wear resistance. The casting behind quenching treatment might be further heated to 300oC and cooled gradually to restore original toughness.
Surface Hardening
A lot of applications of cast iron demand high surface hardness. This might be attained by surface hardening treatments as like: induction and nitriding hardening.
Table: Typical Mechanical Properties and Applications of Cast Iron
Cast Iron
Composition wt. %
Condition
Structure
UTS MPa
YS MPa
Elongation
(%)
Typical Application
Gray Cast
Iron
Ferrite
3.4 C,
2.2 Si,
0.7 Mn
Annealed
Ferrite matrix
180
-
Cylinder blocks and head clutch plates
Pearlite
3.2 C,
2.0 Si,
As-cast
Pearlite matrix
250
Truck and tractor cylinder blocks, gear box
3.3 C,
290
Diesel engine castings
Melleable
2.2 C,
1.2 Si,
0.75 Mn
Temper carbon and ferrite
345
224
10
General engineering service machinability
2.4 C,
1.4 Si,
Temper carbon and pearlite
440
310
8
General service with dimensional tolerance
Martensitic
Quenched and Tempered
Tempered martenstie
620
438
2
High strength parts, connecting rods, yokes for universal joints
Ductile
3.5 C,
2.2 Si
Ferritic
415
275
Pressure casting as valve and pump bodies
Ferritic pearlite
550
380
6
Crank shaft, gears and rollers
830
Pinions, gears, rollers and slides
what is internal combustion engine
First Law for closed system undergoing cycle: In accordance to first law, when a closed system undergoes thermodynamic cycle, the net heat transfer is equal to network transfe
The aim of this project is for you to discover how to use a spreadsheet to "model" a typical engineering problem, in this case a heat transfer situation. And to discover how this m
What is Plain Concrete Footing? Plain Concrete Footing: Footings carrying relatively light loads are constructed with plain concrete. You have already seen a plain concrete
# how to calculate governor effort
Conve r t following reading of pressure to kPa, supposing that the barometer reads 760mm Hg. (1) 90cm Hg gauge (2) 40cm Hg vacuum (3) 1.2m H 2 O gauge Sol: Given
#applications radius of curvature..
Determine the resultant of the system of forces: Four forces act on a body as illustrated in Figure. Determine the resultant of the system of forces. Figure Sol
Dissect an email you have received. First, get the original, ASCII text of the email, including the headers, and the blank line separating the headers and the body of the email.
Force on String: A string ABCD , attached to the two fixed points A and D has two weight of 1000N each attached to it at points B and C . The weights rest with portio
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd