SUBHASIS KUMAR PANDA MAHARAJA INSTITUTE OF TECHNOLOGY BHUBANESWAR FOR MORE UPDATE -SUBHA143MIT@GMAIL.COM PH-09040278018

1. GUIDED BY : SUBMITTED BY:
ASST PROF:S SAHU SUBHASIS KUMAR PANDA
REDG NO:1101308245
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2. INTRODUCTION
WHY TO USE US WELDING
ULTRASONIC WELDING PROCESS
ULTRASONIC WELDING MECHANISM
PRINCIPLE OF ULTRASONIC MACHINING
JOINT FORMS WITH ULTRASONIC MACHINING
SPOT WELDING IN AIRCRAFT WINGS
ADVANTAGES
DIS ADVANTAGES
APPLICATION
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3. INTRODUCTION
 Ultrasonic Sonic means The wave haveing frequency is
more then 20khz. Ultrasonic welding is
an industrial technique whereby high-
frequency ultrasonic acoustic vibrations are locally
applied to work pieces being held together under
pressure to create a solid-state weld.
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4. Why to use US welding?
 First - Ultrasonic assembly uses ultrasonic vibratory
energy which is transmitted through the parts to melt and
bond thermoplastic materials And joining thin sheet
gauge metals and other lightweight materials
Second - This technique is fast, efficient, non-
contaminating and requires no consumables.
Third - In ultrasonic welding, there are no connective
bolts, nails, soldering materials, or adhesives necessary to
bind the materials together.
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5. Ultrasonic Welding
Process
Process
Description:
Components of
ultrasonic welding
system include:
 Transducer
 Sonotrode
 Anvil
Anvil
Mass
Sonotrode
tip
Clamping
force
wedge Transducer
Force
Weldment
Vibration
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6.  A static clamping force is
applied perpendicular to the
interface between the work
pieces.
 The contacting sonotrode
oscillates parallel to the
interface.
 Combined effect of static and
oscillating force produces
deformation which promotes
welding. Anvil
Mass
Sonotrode
tip
Clamping
force
wedge Transducer
Force
workpiece
Ultrasonic Welding Mechanism
10-75 KHz
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7. Principle of Ultrasonic Welding
 In ultrasonic welding, frictional heat produced by the
ultrasonic waves and force is used for the joining process.
Ultrasonic waves (15 to 60 kHz) are transferred to the
material under pressure with a sonometer. Welding times
are lower than 3 s. The welding can proceed with or
without the application of external heat.
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11. Spot welding in aircraft wings
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15. Advantages
 Heat affected zone is minimized
 Very thin materials can be welded
 Surface deformation is minimum
 Welding of glass is also possible
 No defects due to gases, arc and filler metal
 Presure uses are lower ,and welding time are shoter
 Dissimilar materials can be joined
 Welding can be made through some surface coating
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16. Disadvantages
 Restricted to join thin materials
 Competitively not economical
 Materials being welded may tend to weld to the tip and
anvil
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17. Applications
 Manufacturing of toys
 Joining of electrical and electronic components
 Welding aluminium wire and sheet
 Mobiles, sports shoes , laminations, cars…….
 Packing , medical industries, computers.
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18. ULTRASONIC WELDING I VIDEO
MODE
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