This document provides an outline and overview of ultrasonic welding. It describes the major components of an ultrasonic welding system, including the anvil, transducer, booster, and horn. It explains how ultrasonic welding works by using high-frequency vibrations and pressure to join materials without significant heat. Applications include welding plastics and metals with dissimilar melting points. Benefits are joining without consumables, less energy usage, and ability to weld materials like aluminum to copper. Limitations include being restricted primarily to nonferrous metals and plastics, and parts needing to be relatively light.
Here I have explained theoretical view of ultrasonic welding and its applications in real world.
In addition to that, advantages and disadvantages of this process also discussed.
One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Here I have explained theoretical view of ultrasonic welding and its applications in real world.
In addition to that, advantages and disadvantages of this process also discussed.
One of the welding processes that used in Engineering field is the electron beam welding. There are several types of welding processes similar to this, but electron beam welding has its unique features.
Thanks for the colleagues who give this slides to publish.
What is laser beam hardening (LBH)? Advantages, Disadvantages
Applications, What is laser peening? Difference between laser beam hardening (LBH) and electron beam hardening (EBH)
Demand of welding increase of new materials.
-- ceramics and metal matrix composites.
-- High strength low-alloy (HSLA) steels
Lack of skilled labours
Traditional welding techniques are costly
Safety concerns.
Need to improve the total cost effectiveness of the welding
Lalit Yadav
Its a small and precise presentation about under water welding.
It cover two types of under water welding i.e. wet under water welding and dry under water welding.
i wish this small presentation help many students.....
thank you..
Electrochemical Machining (ECM) has established itself as one of the major alternatives to conventional methods of machining difficult - to - cut materials of and generating complex contours, without inducing residual stress and tool wear.
This seminar is devoted to the study of influences of variable ECM parameters like applied voltage and feed rate keeping other parameters constant on the surface roughness (Ra) using Response Surface Methodology (RSM).
Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.
this presentation is about ultrasonic welding ,it shows what is ultra sonic welding and how does it work with some applications .
I am a student at port said university ,faculty of engineering ,production and mechanical design department .
LASER BEAM MACHINING - NON TRADITIONAL MACHININGSajal Tiwari
Laser Beam Machining or more broadly laser material processing deals with machining and material processing like heat treatment, allowing, cladding, sheet metal bending etc. Such processing is carried out utilizing the energy of coherent photons or laser beam, which is mostly converted into thermal energy upon interaction with most of the materials. Nowadays, the laser is also finding application in regenerative machining or rapid prototyping as in processes like stereolithography, selective laser sintering etc. Laser stands for light amplification by stimulated emission of radiation. The underline working principle of a laser was first put forward by Albert Einstein in
1917 through the first industrial laser for experimentation was developed around the 1960s. The laser beam can very easily be focused using optical lenses as their wavelength ranges from half a micron to around 70 microns. The focused laser beam as indicated earlier can have power density in excess of 1 MW/mm2 . As laser interacts with the material, the energy of the photon are absorbed by the work material leading to a rapid substantial rise in local temperature. This, in turn, results in melting and vaporization of the work material and finally material removal.
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The Primary dynamic for welding process development is the need to improve the total cost effectiveness of joining operations in fabrication and manufacturing industries. Many of the traditional welding techniques described are regarded as costly and hazardous, but it is possible to improve both of these aspects by employing some of the advanced process developments.
Discusses some of the role and future direction of welding technology, welding materials, productivity and efficiency, education and safety having an impact on future growth in welding technology. Analysis of key needs of some manufacturing industries has been researched. It also provides a good foundation for future research of the developmental direction of advanced welding processes and materials in manufacturing industries.
Introduction to solid state welding processesMelfway
Welding joins metals through different ways. From arc to oxyfuel, there are various techniques to fasten metal pieces together to create unique products.
Contrary to popular belief, not all welding processes have to melt the metal. One such way of forming metal pieces without increasing the temperature is through solid-state welding, and there are different techniques under this branch too. Here are some of them:
What is laser beam hardening (LBH)? Advantages, Disadvantages
Applications, What is laser peening? Difference between laser beam hardening (LBH) and electron beam hardening (EBH)
Demand of welding increase of new materials.
-- ceramics and metal matrix composites.
-- High strength low-alloy (HSLA) steels
Lack of skilled labours
Traditional welding techniques are costly
Safety concerns.
Need to improve the total cost effectiveness of the welding
Lalit Yadav
Its a small and precise presentation about under water welding.
It cover two types of under water welding i.e. wet under water welding and dry under water welding.
i wish this small presentation help many students.....
thank you..
Electrochemical Machining (ECM) has established itself as one of the major alternatives to conventional methods of machining difficult - to - cut materials of and generating complex contours, without inducing residual stress and tool wear.
This seminar is devoted to the study of influences of variable ECM parameters like applied voltage and feed rate keeping other parameters constant on the surface roughness (Ra) using Response Surface Methodology (RSM).
Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.
this presentation is about ultrasonic welding ,it shows what is ultra sonic welding and how does it work with some applications .
I am a student at port said university ,faculty of engineering ,production and mechanical design department .
LASER BEAM MACHINING - NON TRADITIONAL MACHININGSajal Tiwari
Laser Beam Machining or more broadly laser material processing deals with machining and material processing like heat treatment, allowing, cladding, sheet metal bending etc. Such processing is carried out utilizing the energy of coherent photons or laser beam, which is mostly converted into thermal energy upon interaction with most of the materials. Nowadays, the laser is also finding application in regenerative machining or rapid prototyping as in processes like stereolithography, selective laser sintering etc. Laser stands for light amplification by stimulated emission of radiation. The underline working principle of a laser was first put forward by Albert Einstein in
1917 through the first industrial laser for experimentation was developed around the 1960s. The laser beam can very easily be focused using optical lenses as their wavelength ranges from half a micron to around 70 microns. The focused laser beam as indicated earlier can have power density in excess of 1 MW/mm2 . As laser interacts with the material, the energy of the photon are absorbed by the work material leading to a rapid substantial rise in local temperature. This, in turn, results in melting and vaporization of the work material and finally material removal.
ONGOING PROGRESS IN ADVANCED WELDING PROCESSES AND MATERIALSRamamSingh
The Primary dynamic for welding process development is the need to improve the total cost effectiveness of joining operations in fabrication and manufacturing industries. Many of the traditional welding techniques described are regarded as costly and hazardous, but it is possible to improve both of these aspects by employing some of the advanced process developments.
Discusses some of the role and future direction of welding technology, welding materials, productivity and efficiency, education and safety having an impact on future growth in welding technology. Analysis of key needs of some manufacturing industries has been researched. It also provides a good foundation for future research of the developmental direction of advanced welding processes and materials in manufacturing industries.
Introduction to solid state welding processesMelfway
Welding joins metals through different ways. From arc to oxyfuel, there are various techniques to fasten metal pieces together to create unique products.
Contrary to popular belief, not all welding processes have to melt the metal. One such way of forming metal pieces without increasing the temperature is through solid-state welding, and there are different techniques under this branch too. Here are some of them:
Ultrasonic welding is an industrial technique whereby high-frequencyultrasonic acoustic vibrations are locally applied to work pieces being held together under pressure to create a solid-state weld
Forklift Classes Overview by Intella PartsIntella Parts
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3. OUT LINE
INTRODUCTION
MAJOR COMPONENTS
HOW ULTRASONIC WELDING WORKS
BASIC MOLECULAR PHYSICS
SOLUTION OF PROBLEM
ULTRASONIC WELDING OF PLASTICS
APPLICATIONS OF UW OF PLASTICS
USES OF ULTRASONIC WELDING
LIMITATIONS OF ULTRASONIC WELDING
CONCLUSION
4. INTRODUCTION
One of the newest and most interesting fields of joining
technology is ultrasonic welding.
In this process, high frequency vibrations are combined
with pressure to join two materials together quickly and
securely, without producing significant amounts of heat.
These factors give it many advantages over traditional heat
based welding techniques.
These include the ability to weld metals of significantly
dissimilar melting points.
Finally, ultrasonic welds are made without consumables,
such as solder or filler that would ordinarily be used for the
connection and with far less energy usage than traditional
joining techniques
5. MAJOR COMPONENTS
The system that is used to scrub the pieces together
consists of four major components.
Anvil
ultrasonic transducer
Booster
ultrasonic horn
8. COMPONENTS
ANVIL:-
This is simply a piece of the machine, usually with a
replaceable head, that holds one of the components
still while the other is rubbed against it.
9. COMPONENTS
ULTRASONIC TRANSDUCER:-
It is the “business end” of the ultrasonic system. This
component takes an electrical signal from a power
supply that is providing a 20khz AC signal and
converts it to a mechanical motion at the same
frequency. The vibration that results is at a frequency
that is appreciably above the range of human hearing,
hence the name ultrasonic.
10. COMPONENTS
BOOSTER:-
The next part of the system, appropriately called the
booster, increases the amplitude of the motion, at the
cost of some of its force. This motion is then passed to
the ultrasonic horn.
11. COMPONENTS
ULTRASONIC HORN:-
This is the portion of the system that actually vibrates
the work piece. In addition to providing the interface
between the ultrasonic generator and the work piece,
the horn also further amplifies the amplitude of the
motion, again reducing its force. Like the anvil, the
horn ends in a replaceable head.
12. How ultrasonic welding works
The process of ultrasonic welding is fairly simple.
It begins when the parts that are to be welded, such as
two multi-strand copper wires for example, are placed
together in the welding unit.
The system then compresses the wires together with a
force of between about 50 and several hundreds
pounds per square inch to form a close connection
between the two pieces.
Next, the ultrasonic horn is used to vibrate the two
pieces together at a rate of around 20,000 or 40,000
hertz, depending on the application.
13. BASIC MOLECULAR PHYSICS
The first principal is that when two clean pieces of
metal are placed in intimate contact, they will begin to
share electrons, thus welding together.
Second, at atomic scale even surfaces those that look
perfect and smooth are very rough and impure.
The majority of this impurity is in the form of metal
oxides that were produced when the bare metal was
exposed to the atmosphere.
14. The second part of the
contamination is in the form of
ordinary dirt and oils.
These impurities form a layer
that prevents the electrons in
the two parts from passing
between them, thus preventing
them from welding together.
In addition, the rough surface
prevents the metals from being
in intimate contact, which also
prevents the exchange of
electrons.
15. SOLUTION
The ultrasonic welding process works by eliminating
these factors that prevent the pieces from being in
intimate contact.
The vibration, combined with the pressure, first rubs
the impurities and oxides off of the surfaces of the
pieces where they are in contact.
As the rubbing motion continues, the clean bare metal
parts are rubbed together, polishing them to a
molecularly smooth boundary.
16. SOLUTION
When the ultrasound is turned off there is no longer
anything preventing the exchange of electrons
between the two perfectly cleaned and polished pieces.
Because of this the electrons begin to move between
them forming a true metallurgical weld.
This entire process usually takes about one quarter of a
second.
18. UW OF PLASTICS
In addition to all of the uses of ultrasonic's in the
welding of metals, the technology can also be used to
weld plastic parts together.
In this application, the process is slightly different
from that used to weld metals.
One primary difference is that rather than scrubbing
the parts together, as in metal welding, in plastic
welding the parts are vibrated toward and away from
each other.
This heats and softens them.
19.
20. UW OF PLASTICS
The continued motion then tends to mix the softened
surfaces of the plastic together, forming both a
physical, and if the plastics are selected correctly, a
chemical bond between the parts.
ADVANTAGES:-
Lower cost
Higher speed
Greater reliability than most or all other methods of
attaching the pieces.
21. UW OF PLASTICS
LIMITATION FOR PLASTICS:-
The only restriction on welding plastics is that the
parts must have relatively close melting points, or else
one will melt completely before the other begins to
soften.
22. UW OF PLASTICS
APPLICATION:-
Like ultrasonic metal welding, ultrasonic plastic
welding has a wide variety of uses.
These include sealing containers and bags, attaching
plastic components and embedding metal
components in plastics.
This last example deserves special attention.
When a metal part needs to be attached to a plastic
part, convention methods include molding the metal
component into the part when it is created, gluing the
metal part to the plastic and locally melting the plastic
component then inserting the piece into the molten
area and allowing it to solidify.
23. UW OF PLASTICS
Ultrasonic welding of metal to plastic works by using
the ultrasonic head to vibrate the metal component
against the plastic one. This heats and softens the
plastic part and allows the metal part to be inserted. As
the plastic cools, a very strong bond is made.
24. USES of ULTRASONIC WELDING
Due to its versatility, effectiveness and cost, there are a
nearly infinite number of applications for ultrasonic
welding.
One of the most common is for the production of
wiring connection.
Ultrasonic welding is ideal for this application for a
number of reasons.
One of these is that it produces a nearly perfect
electrical connection.
25. Second, it requires no consumables, such as solder.
Third, it uses far less energy than other forms of
connecting, such as resistance welding, which is made
difficult by the excellent electrical characteristics of
copper wire.
Finally, the ultrasonic welding process produces little
heat, allowing it to be used near heat sensitive
components.
26. USES
A subset of this field is the welding of enamel
insulated magnet wire to other wires or connectors. In
addition to the other advantages, the ultrasonic
scrubbing action effectively removes the insulation in
the normal process of making the weld, eliminating
the extra step of removing it that would be necessary
using other methods.
27. Another common use of ultrasonic welding, also in
the electrical field, is joining aluminum wire, such as is
used in some transformers, to copper wire.
In this case, ultrasonic welding is the only practical
method of performing the connection.
Aluminum does not solder well, and attempting to
thermally weld aluminum to copper produces alloys
that are extremely brittle.
Before the application of ultrasonic welding, the only
way to perform these connections was to first plate the
aluminum with nickel, then solder or weld to that.
This process was complicated and uneconomical.
28. USES
Other applications include the
termination of both wires and pipes.
Ultrasonic welding is well suited for
attaching terminations, such as clips or
other connectors to copper wires.
Like joining wires together, this can be
done much more economically with
ultrasonic welding than with other
techniques.
Finally, ultrasonic welding is often used
in HVAC industry, as well as others, for
sealing the ends of copper tubes.
In addition to the usual advantage of
cost, ultrasonic welding is desirable for
this application due to its speed and
excellent reliability.
29. ADVANTAGES OF UW
ultrasonic welding has many advantages over other
welding techniques for many types of connections.
These include
Speed
Cost
reliability and many others.
However, it should also be made clear that it is only
ideal for a relatively small proportion of all of the
possible joints.
30. LIMITATIONS
There are some restrictions on the types of joints that
can be made with ultrasonic welding.
One of these is that it is restricted primarily to
nonferrous metals and plastics.
Another is that at least one of the parts must be
relatively light, as it would take a tremendous amount
of energy to vibrate a heavy part at the necessary
frequency.
This restriction, unfortunately, limits the process to
small components and wires.
31. CONCLUSION
It is one of the simple technique to weld the materials
either similar or dissimilar using vibration and friction.
So large amount of heat is not required in this
technique.
Ultrasonic welding should not be seen as a
replacement for other techniques, such as GTAW,
resistance, laser, etc. but rather as an option in
situations for which it is well suited.