This document provides an overview of friction stir welding (FSW). It describes FSW as a solid-state welding process that uses friction and mechanical stirring to join materials without melting. Key points include: FSW uses a rotating tool to generate frictional heat and plastically deform the materials, leaving a solid phase bond; important parameters are tool rotation/travel speeds and geometry; FSW eliminates issues like porosity and shrinkage seen in fusion welding. Applications include aerospace, transportation, industrial structures, and shipbuilding.
the slide shows the advance welding technic like as Tig And Mig Welding Process.
it help people to understand the advance manufacturing process for welding.
it made by Sk Samsuddin.
the slide shows the advance welding technic like as Tig And Mig Welding Process.
it help people to understand the advance manufacturing process for welding.
it made by Sk Samsuddin.
welding,Plasma arc welding,Plasma,,Pilot Arc ,Keyhole,Weld bead geometry ,Transferred plasma arc welding process,India,Small Part Welding
Sealed Components
Tool Die & Mold Repair
Tube Mill Welding
Long Strip Metal Welding
Non-transferred plasma arc welding process,Two Modes of operation in PAW,. Melt – In mode
Keyhole mode
conduction mode
,Effect of Various Factors on weld Quality Nozzle shape and size , Features of Plasma Arc Welding,Advantages of Plasma Arc Welding,Disadvantages of Plasma Arc Welding,Application of Plasma Arc Welding
Instability of the keyhole
Tungsten electrode set-back
Composition and flow rate of the plasma gas
Tezpur University
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 metal inert gas welding. There are several types of welding processes similar to this, but MIG welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Forging is the operation where the metal is heated and then a force is applied to manipulates the metals in such a way that the required final shape is obtained.
Friction stir welding was invented by Wayne Thomas at Twi Limited (The Welding Institute) in England at 1991.
It overcomes many of the problems associated with conventional
joining techniques.
FSW is low energy input, capable of producing very high strength
welds in wide range of materials at lower cost
FSW process takes place in the solid phase below the melting point of the materials to be joined
One of the welding processes that used in Engineering field is the TIG welding. There are several types of welding processes similar to this, but tig welding has its unique features.
Thanks for the colleagues who give this slides to publish.
welding,Plasma arc welding,Plasma,,Pilot Arc ,Keyhole,Weld bead geometry ,Transferred plasma arc welding process,India,Small Part Welding
Sealed Components
Tool Die & Mold Repair
Tube Mill Welding
Long Strip Metal Welding
Non-transferred plasma arc welding process,Two Modes of operation in PAW,. Melt – In mode
Keyhole mode
conduction mode
,Effect of Various Factors on weld Quality Nozzle shape and size , Features of Plasma Arc Welding,Advantages of Plasma Arc Welding,Disadvantages of Plasma Arc Welding,Application of Plasma Arc Welding
Instability of the keyhole
Tungsten electrode set-back
Composition and flow rate of the plasma gas
Tezpur University
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 metal inert gas welding. There are several types of welding processes similar to this, but MIG welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Forging is the operation where the metal is heated and then a force is applied to manipulates the metals in such a way that the required final shape is obtained.
Friction stir welding was invented by Wayne Thomas at Twi Limited (The Welding Institute) in England at 1991.
It overcomes many of the problems associated with conventional
joining techniques.
FSW is low energy input, capable of producing very high strength
welds in wide range of materials at lower cost
FSW process takes place in the solid phase below the melting point of the materials to be joined
One of the welding processes that used in Engineering field is the TIG welding. There are several types of welding processes similar to this, but tig welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Friction Stir welding combine the action of frictional heating and mechanical deformation due to a rotating tool. The advantages of Friction Stir welding over arc welding is as follows:-
1) High quality weld can be achieved
2) Absence of solidification cracking
3) Lower apparent energy input
4) Less distortion and residual stress
Friction-stir welding is an advanced solid-state joining process (the metal is not melted) which involves the use of a third body tool to join two facing surfaces. Heat is generated between the tool and material which leads to a very soft region near the FSW tool. It then mechanically intermixes the two pieces of metal at the place of the joint, then the softened metal (due to the elevated temperature) can be joined using mechanical pressure (which is applied by the tool), much like joining clay, or dough. It is primarily used on aluminium, and most often on extruded aluminium (non-heat treatable alloys), and on structures which need superior weld strength without a post weld heat treatment.
It was invented and experimentally proven at The Welding Institute UK in December 1991.
This presentation focuses on basics of solid state processes and its processes including the applications of specific processes. It also covers the advantages and disadvantages of the discussed processes.
Experimental Investigation of Tensile Strength and Deflection Characteristics...IOSR Journals
Aluminum alloys are used in many applications in which the combination of high strength and low
weight is attractive; ship building, air frame, transportation industry etc. are some areas in which the low
weight can be significant value. Friction stir welding (FSW) is a new welding technique particularly well suited
to aluminum alloys though this technique is also used for other materials. Friction stir welding promises joints
with low porosity, fine microstructures, minimum phase transformation and low oxidation compared to
conventional welding techniques. It is capable of joining combinations of alloys not amenable to conventional
welding.Experiments for tensile and deflection tests were carried out and reported in this research paper. The
base material used for friction stir welding was AA 6351–T4 Aluminum alloy. Tensile strength and breaking
loads were increased with increase of rotational speed of the tool but it drops after attaining marginal speed.
Deflections of friction stir welded specimens and base materials were compared and they exhibited almost
similar trends at different load conditions and deflections of all the specimens were increased with increment of
load
Characterization and processing of friction stir welding on copper weldseSAT Journals
Abstract FSW(Friction Stir Welding) is a welding technology will be a part of different metals with sensible properties. During this paper, fsw attachment b/n steel, aluminum and copper plates with thicknesses of 3 millimeter was welded. Here we tend to had considered completely different completely different} materials with different combinations i.e copper and copper, copper and aluminum, aluminum & stainless steel, stainless steel & copper. Friction Stir Welding experiments were employed to get the good wieldable properties by maintaining the rpm speeds to 1120 revolutions per minute and attachment speed within the limit of 14-112 mm/min and here we can adjust the pin profile of the location respect to the line butt. Micro struc analysis can be done for examine the parent and the welded material. Cutting and sectioning of the welded pieces for metallographic analysis of the planes which are perpendicular for the attachment and the travelling direction & which is parallel to the friction welding was done. Here the mechanical properties of welding which was were determined by employing the same standard micro hardness and also tensile hardness testing and finding the maximum elongation of the metals to the properties of fsw. From experimental fsw process it can be found the pin profile and also the rotational speed, feed is an important in manufacturing of free welds in fsw of aluminum, copper and steel. Key Words: FSW, Aluminum, copper, stainless steel.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Journals
Abstract Friction Stir Welding (FSW) is a solid state welding process. In particular, it can be used to join high-strength aerospace magnesium and other metallic alloys that are hard to weld by conventional fusion welding. It was performed on 4 mm thickness AZ91 Magnesium alloy. Magnesium alloy have more advantage than aluminum such as light weight, softer, tendency to bend easily, cost effective in terms of energy requirements so magnesium alloy has selected in this FSW technique. In friction stir welding (FSW), a momentous residual stress is present in weld due to complex nature of fixturing system compared to fusion welding. These residual stresses can affect properties of welded components during service. Therefore, for estimating magnitude of welding residual stresses and their nature of distribution along with thermal history, a three dimensional non- linear thermo-mechanical finite element (NLTMFE) model using ABAQUS/ CAE package was developed for butt welded magnesium alloy AZ91. The objective of this work is to predict the temperature distribution in both materials and evaluate the mechanical properties during the friction stir welding on magnesium alloy. Keywords: Fsw, Nltmfe, Abaqus, Cae, Az91.
FRICTION STIR WELDING is a very latest tchnology of welding process .Its a green method of solid state joining, and also a defect free method .
To know more about this you can also watch this animation https://youtu.be/kEEST5cgOao
Characterization And Study of Friction Stir Welding of AA6101 Aluminum Alloy IJERA Editor
Friction stir welding (FSW) combines two plates by frictional heating at the interface with the localized plastic
deformation within the material. In friction stir welding heat is generated by the friction between rotating tool
shoulder and the plates to be welded. The heat thus generated results in thermal softening of the material. The
softened material is then forced to flow by the translation of the tool from the front to the back of the pin. There
it cools, consolidates and results in joint formation. In the process, strength of the joint and percentage
elongation varies from the parent material. AA6101 is equivalent to AA 6061 and AA6063. At present AA6101
is used by the electrical industries only. A detailed experimental study has been done on AA 6101 to its utility as
an Aluminum alloy for structural fabrication.
friction stir welding is a joining process that has exhibited many advantages over traditional welding process including greatly reducing distortion and eliminating solidification. In this process welding using fiction as the major resource, due to the frictional heating & Mechanical deformation
Research Inventy : International Journal of Engineering and Scienceinventy
esearch Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Friction Stir Welding, a type of welding which was
discovered in the year of 1991 with a few countable methods
and processes. But today it is one of the necessary and
important type of welding techniques. To develop it, several
researchers showed their interests in this technique. Today,
it acts as the heart of welding of automobiles. Thousands of
inventions has been made in field of Friction Stir Welding
and also successfully being implemented. If a researcher
tries to make some research in this field, he has to go
through thousands of journals where hours of time is being
consumed. To solve that problem several Re-view journals
are being published and also successfully solved this issue
of time consumption. In this paper, similarly a re-view of
several important and different types of papers are discussed
with their results, outcomes, the parameters being performed
for analysis.
This paper also discusses about various methods and various
metals as tools and job materials. It will be much easier and
lenient to understand from this paper to research. The
authors of the papers also clearly explained about the usages
and applications of their methods and provided several
statistical data for clear observation of their methods
Study on Effect of Different Tool Design & Material in Friction Stir WeldingIJERA Editor
Friction Stir Welding (FSW) is a solid state joining process that involves joining of metals without fusion or filler materials. The frictional heat is produced from a rapidly rotating non- consumable high strength tool pin that extends from a cylindrical shoulder. The process is particularly applicable for aluminum alloys but can be extended to other products also. Plates, sheets and hollow pipes can be welded by this method. The process is also suitable for automation. The weld produced is of finer micro structure and superior in characteristics to that parent metal. FSW finds application in shipbuilding, aerospace, railway, electrical and automotive industry. The limitations of FSW are reduced by intensive research and development. Its cost effectiveness and ability to weld dissimilar metals makes it a commonly used welding process in recent times.
Understanding - different welding process, how to specify welding details in drawing, selection of different welding process, selection of shielding gas
This Presentation gives a brief idea on turbojet engines, their components, working principle and also regarding the type of materials used in the engine parts, applications etc
This Presentation gives a brief idea on turbojet engines, their components, working principle and also on the materials used in both the hot and cold sections of the engine, applications, etc..
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
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About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
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Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
2. contents
Welding
Types Of Welding
Introduction To Friction Stir Welding
Principle Of Operation
Weld Structure Analysis
Important Welding Parameters
Welding Forces
Advantages & Disadvantages
Applications Of FSW
Conclusion
References
3. WELDING
Welding is a materials joining process by heating them to
suitable temperatures with or without the application of
pressure with or without the use of filler material.
Welding is used for making permanent joints.
It is used in the manufacture of automobile bodies, aircraft
frames, railway wagons, machine frames, structural works,
tanks, furniture, boilers, general repair work and ship building.
4. TYPES
• Non fusion welding or Plastic Welding or Pressure Welding
The piece of metal to be joined are heated to a plastic state
and forced together by external pressure
(Ex) Resistance welding
• Fusion Welding or Non-Pressure Welding
The material at the joint is heated to a molten state and allowed
to solidify
(Ex) Gas welding, Arc welding
5. Classification of welding processes
(i). Arc welding
Carbon arc
Metal arc
Metal inert gas
Tungsten inert gas
Plasma arc
Submerged arc
Electro-slag
(ii). Gas Welding
Oxy-acetylene
Oxy-hydrogen
(iii). Resistance Welding
Butt
Spot
Seam
Projection
(iv)Thermit Welding
(v)Solid State Welding
Friction Stir Welding
Ultrasonic
Diffusion
(vi)Newer Welding
Electron-beam
Laser
6. Introduction to FSW
Welding using friction as the major resource
No filler material involved
Welds created by,
a) Frictional heating
b) Mechanical deformation
7. Friction-stir welding (FSW)
It is a solid-state joining process (the metal
is not melted)
In the process a rotating FSW tool is
plunged between two clamped plates. The
frictional heat causes a plasticised zone to
form around the tool. The rotating tool
moves along the joint line. A consolidated
solid-phase joint is formed.
Friction Stir Welding transforms the
metals from a solid state into a plastic state,
and then mechanically stirs the materials
together under pressure to form a welded
joint
8. Principle Of Operation
In friction stir welding (FSW) a cylindrical, shouldered tool with a profiled
probe is rotated and slowly plunged into the joint line between two pieces
butted together.
The parts have to be clamped onto a backing bar in a manner that prevents
the abutting joint faces from being forced apart.
Frictional heat is generated between the wear resistant welding tool and the
material of the work pieces.
9. Principle Of Operation(contd.)
This heat causes the material to soften without reaching the melting
point and allows traversing of the tool along the weld line.
The maximum temperature reached is of the order of 0.8 of the
melting temperature of the material.
It leaves a solid phase bond between the two pieces.
The process can be regarded as a solid phase keyhole welding
technique since a hole to accommodate the probe is generated, then
filled during the welding sequence.
10. Weld Structure Analysis
A. Unaffected material
B. Heat affected zone (HAZ)
C. Thermo-mechanically affected zone (TMAZ)
D. Weld nugget (Part of thermo-mechanically affected
zone)
11. Important welding parameters
Tool rotation and traverse speeds
Tool tilt and plunge depth
Tool design
Tool rotation and traverse speeds
There are two tool speeds to be considered in friction-stir welding;
how fast the tool rotates and
how quickly it traverses the interface.
in general, it can be said that increasing the rotation speed or decreasing the traverse
speed will result in a hotter weld.
In order to produce a successful weld it is necessary that the material surrounding the
tool is hot enough to enable the extensive plastic flow required and minimize the forces
acting on the tool.
12. Tool rotation and traverse speeds(contd.)
If the material is too cold then voids or other flaws may be present
in the stir zone and in extreme cases the tool may break.
Tool tilt and plunge depth
Plunging the shoulder below the plate surface increases the pressure below the
tool and helps ensure adequate forging of the material.
Tilting the tool by 2–4 degrees, such that the rear of the tool is lower than the
front, has been found to assist this forging process.
The plunge depth needs to be correctly set, both to ensure the necessary
downward pressure is achieved and to ensure that the tool fully penetrates the
weld.
An excessive plunge depth may result in the pin rubbing on the plate surface
13. Welding forces
During welding a number of forces will act on the tool:
A downwards force is necessary to maintain the position of the tool at the material
surface.
The traverse force acts parallel to the tool motion
The lateral force may act perpendicular to the tool traverse direction
Torque is required to rotate the tool, the amount of which will depend on the down
force and friction coefficient and the flow strength of the material in the surrounding
region.
14. Advantages
Low distortion and shrinkage, even in long welds
Excellent mechanical properties in fatigue and tensile tests
No arc or fumes
No porosity
Can operate in all positions (horizontal, vertical, etc.), as there is no weld pool.
Energy efficient
One tool can typically be used for up to 1000m of weld length in 6XXX series
aluminium alloys
No filler wire required
No gas shielding is also required for welding
15. Disadvantages
Exit hole left when tool is withdrawn.
Less flexible than manual and arc processes
Work pieces must be rigidly clamped
Often slower traverse rate than some fusion welding techniques.
Cannot make joints which required metal deposition (e.g. fillet welds)
16. Shipbuilding and Marine Construction
Panels for decks, sides, bulkheads and
floors
Helicopter landing platforms
Marine and transport structures
Aerospace Industry
Wings, fuselages
Cryogenic fuel tanks for space vehicles
Aviation fuel tanks
External throw away tanks for military aircr
Military and scientific rockets
Land Transportation
Wheel rims
Truck bodies & tail lifts for lorrie
Mobile cranes
Fuel tankers
Caravans
Railway Industry
Rolling stock of railways and underground carriages
Railway tankers and goods wagons
Container bodies
Industrial Applications
17. Conclusion
FSW is a solid state welding process.
Friction is the major resource.
Makes joint with the application of pressure and frictional heat.
Overcomes many of the problems by traditional welding
processes.
FSW has more demand in many industrial applications
An alternative to fusion welding
18. References
R.S. Mishraa, Z.Y. Mab Friction stir welding and processing
REPORTS(a review journal) R 50 (2005) 1–78
Friction Stir Welding And Processing by Rajiv.S.Mishraa
and Murray.W.Mahoney ASM text book.
http://wikipedia.org/Friction_stir_welding
http://www.twi.co.uk
19.
20.
21.
22.
23. Tool design
The design of the toolis a critical factor as a good tool can improve both the
quality of the weld and the maximum possible welding speed.
It is desirable that the tool material is sufficiently strong, tough, and hard at the
welding temperature.
Further it should have a good oxidation resistance and a low thermal
conductivity.
Hot-worked tool steel such as AISI H13 has proven perfectly acceptable for
welding aluminium alloys within thickness ranges of 0.5 – 50 mm but more
advanced tool materials are necessary for more demanding applications such as
highly abrasive metal matrix compositesor higher melting point materials such as
steel or titanium.
24. History
Invented and patented by The Welding
Institute, a British research and technology
organization,
Friction Stir Welding (FSW) was invented by
Wayne Thomas at TWI Ltd in 1991 and overcomes
many of the problems associated with traditional
joining techniques
25. Microstructural features
The stir zone (also called weld nugget,)is a region of heavily deformed
material that roughly corresponds to the location of the pin during welding.
The thermo-mechanically affected zone (TMAZ) occurs on either side of the
stir zone. In this region the strain and temperature are lower and the effect of
welding on the microstructure is correspondingly smaller.
The heat-affected zone (HAZ) is common to all welding processes. The
temperatures are lower than those in the TMAZ but may still have a significant
effect if the microstructure is thermally unstable.
26. Barriers for FSW
Special clamping system necessary
Only for simple joint geometries (e.g. butt joint)
License required from TWI
Few applications in the construction industry
Corrosion protection is needed