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Crank Bearing Sleeve Removal Through Homogeneous

Heating.

Supervisor: Col(R) Naeem

Jaan Amin

Co-Supervisor: Mr. Shahwar

Yaseen

Students:1. Aqib Javed (11-ME-019)

2. Allah Yar Khan (11-ME-016)

3. Muhammad Sohaib (11-ME-041)

4. Hassan Sajjad Ahmed (11-ME-048)

Introduction:

• What is our Project ?

Objectives:

1. To make a bearing sleeve removal system by

homogeneous heating.

2. Modeling.

3. Fabrication.

Gantt Chart.

Material Properties of sleeve (GCr15 SiMn)

Grade C Si Mn Cr Mo P S Ni Cu Ni+C

u

GCr 15 SiMn

0.95 ~1.0

5

0.45 ~0.75

0.95 ~1.2

5

1.40 ~1.6

6

≤0.1

0

≤0.0

25

≤0.0

25

≤0.

3

≤0.2

5

≤0.50

Material Properties of Crank (45 CrNi)

Calculations for Sleeve.• Formula to find the thickness of the sleeve due to heating:

Rf = R1(1+α*(T2-T1))

• R1 = Inner Radius of Sleeve. (130 mm)

• α = Thermal Expansion Coefficient of given material. (13.3E-06)

• T1 = Atmospheric Temperature. (25°C)

• T2 = Giving Temperature. (Variable Values)

• Rf = Final Radius of Sleeve after heating.

• Rf-R1 = Change in Radius

Thickness Vs Temperature Graph(For Sleeve)

0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.20

50

100

150

200

250

Change in Radius (Rf-R1)

Tem

pera

ture

Ch

an

ge

Material properties of Crank (45CrNi)

Reference: http://www.longhaisteel.com/Steel-Grades/Carbon-Steel/aisi-a3145.html

Calculations for Crank• Formula to find the thickness of the sleeve due to heating:

Rf = R1(1+α*(T2-T1))

• R1 = Inner Radius of Sleeve. (130 mm)

• α = Thermal Expansion Coefficient of given material. (10E-06)

• T1 = Atmospheric Temperature. (25°C)

• T2 = Giving Temperature. (Variable Values)

• Rf = Final Radius of Sleeve after heating.

• Rf-R1 = Change in Radius

Thickness Vs Temperature Graph(For Crank)

0.0004 0.0006 0.0008 0.001 0.0012 0.0014 0.00160

50

100

150

200

250

Change in Radius (Rf-R1)

Tem

pera

ture

Ch

an

ge