View
218
Download
0
Category
Preview:
Citation preview
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
1/20
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
2/20
A Technical Seminar
On
FRICTION WELDING
PRESENTED BY,SOURAV MONDAL
M.E-D-09/13
ROLL NO -11800713074
BIRBHUM INSTITUTE OF ENGINEERING
& TECHNOLOGY
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
3/20
Contents
1. Introduction
2. Principle
3. Types of Friction Welding
4. Advantages
5. Disadvantages
6. Application
7. References
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
4/20
Friction welding is a group of solid state joiningprocess using heat generated through mechanical
friction between moving workpieces,with the
addition of an upsetting force to plastically
displace material. Many dissimilar metal combination can be joined.
In conventional friction welding, relative rotation
between a pair of work pieces is caused is whilethe work pieces are urged together.
Friction Welding is a type of forge welding, i.e.
welding done by the application of pressure.
Introduction of Friction Welding
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
5/20
Solid
StateWelding
Electrical
Chemical
Mechanical
Friction Pressure&
Deformation
Friction
Weld
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
6/20
Principle
The principle of this process is the changing of mechanical
energy into heat energy.One component is gripped and rotated
about its axis while the other component to be welded to it is
gripped and does not rotate but can be moved axially to make
contact with the rotating component. At a point fusion
temperature is reached, then rotation is stopped and forging
pressure is applied.Then heat is generated due to friction and isconcentrated and localized at the interface, grain structure is
refined by hot work. Then welding is done, but there will not
occur the melting of parent metal.
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
7/20
1.One component
rotated rapidly, the
other is stationary
2.Rotatingand
stationary components
brought together into
contact and forceapplied
3. Axial force is
increased to bringcomponents into a
plastic state at
interface
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
8/20
4. Rotation is stopped and
more axial force is applied
5. Result - A full cross
sectional weld in the
complete metal.
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
9/20
Linear Friction Welding
Rotary Friction Welding
Inertia Friction Welding
Friction Stir Welding
Types of Friction Welding
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
10/20
The work pieces are
brought together under
pressure for a predeter-mined time, or until a
preset upset is reached.
Then the drive is
disengaged and a breakis applied to the rotating
work piece.
Workpieces
Non-rotating viseMotor
Chuck
SpindleHydraulic cylinder
Brake
Rotary Drive Friction Welding
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
11/20
One of the work pieces is
connected to a flywheel; the
other is clamped in a non-
rotating axial drive
The flywheel is accelerated to
the welding angular velocity.
Frictional heat is produced at
the interface. An axial force is
applied to complete welding.
Spindle
Workpieces
Non-rotating chuck
Hydraulic cylinder
FlywheelMotor
Chuck
Inertia Welding Process
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
12/20
Friction Stir
Welding Parts to be joined are
clamped firmly.
A rotating hardened steel
tool is driven into the jointand traversed along the joint
line between the parts.
The rotating tool produces
friction with the parts,
generating enough heat and
deformation to weld the
parts together.
Butt welds
Overlap welds
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
13/20
Friction Surfacing
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
14/20
The joint face of at
least one of the
work piece musthave circular
symmetry (usually
the rotating part). Typical joint
configurations
shown at right.
Rod Tube Rod to tube
Rod to plate Tube to plate Tube to disc
Friction Welding Joint Design
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
15/20
Advantage
1. Material and machining cost savings.2. High production rates.
3. Similar and dissimilar material joined with no added fluxes
or filler metals.
4. Low distortion.
Disadvantage
1. Machine need sufficient power.
2. Angle of the job can not weld properly.
3. Heavy Force is required.
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
16/20
Used in commercial parts like bi-cycle
parts, medical equipment etc.
Used in automotive industry to
manufacture front wheel drive shaft
joints, wheels and rims. Used in aerospace & agricultural field.
Friction Welding Applications
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
17/20
Friction Welded Automotive HalfshaftFriction Welded Joint
Friction Welded Joints
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
18/20
8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
19/20
References
Wikipedia.org
www.google.com
http://www.google.com/http://www.google.com/8/10/2019 TECHNICAL SEMINAR ON Friction Welding - Sourav Mondal
20/20
THANK YOU
Recommended