Rutash Mittal M.E(CIM), B.Tech (M.E) Assistant Professor Mechanical Engineering Department, MIMIT, MALOUT Presented By:

Slides:



Advertisements
Similar presentations
Group D: Tarang Valecha Dhananjay R. Apurva Mali Prateek Singh
Advertisements

WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application.
ASHOKA INSTITUTE OF TECHNOLOGY & MANAGEMENT AKTHA, SARNATH VARANASI
ME 330 Manufacturing Processes WELDING PROCESSES
| Vigyan Ashram | INDUSA PTI |1 Vigyan Ashram (A center of Indian Institute Of Education) At. Post Pabal Dist. Pune
WELDING PROCESSES Arc Welding Resistance Welding Oxyfuel Gas Welding
Welding Basics Manufacturing Technology HPEDSB.
Solid State Welding Processes
CHAPTER THREE JOINING OF MATERIALS
Non Arc Welding Processes Resistance Weld High Energy Density
Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri Manufacturing Processes Lab I MET 1321.
ME 330 Manufacturing Processes WELDING PROCESSES (cont)
Welding Workshop Technology
Welding Text book, Office hour, by appointment 1.
Joining Metals Learning Intention: understand the processes of soldering, brazing, welding, riveting/pop riveting.
Intro to SMAW Welding Intro to Agriculture.
Welding joints By: Michael Vue.
PRESENTED BY ILAMVAZHUTHI.C 1 Under the guidance of Mr.S.CHOKALINGAM M.E (Assistant professor) DEPARTMENT OF MECHANICAL ENGINEERING E.G.S.PILLAY ENGINEERING.
Gas Metal Arc Welding (Metal Inert Gas) (MIG)
UNIT—II JOINING PROCESS
WELDING AND GAS METAL ARC WELDING (GMAW)
MAC( ) RESISTENCE WELDING. W ELDING TYPES  Plastic/Pressure Welding  Fusion/Non Pressure Welding.
Welding By Zach Parkinson 3-A.
Industrial Processes II INDUSTRIAL PROCESSES II INDEN 3313 Lecture 6 – Case Study Fusion Welding -- Oxyfuel and Electric (Arc) Welding Processes.
Metal – Processing Welding.
Fabrication Welding
TIG lesson Lesson ). ARC Welding Arc welding is a processes where metals are melted and joined together using intense heat produced by an electric arc.
ELECTRON BEAM WELDING The electron beam gun has a tungsten filament which is heated, freeing electrons. The electrons are accelerated from the source with.
Associate Professor (Workshop)
FRICTION WELDING. Friction Welding Friction Welding is a Solid State Welding process, in which two cylindrical parts are brought in contact by a friction.
Submerged arc-welding (SAW)
Projection welding.
Resistance Welding Resistance Welding is a pressure welding technique using high current and low voltage The current passing through the two overlapping.
Flux Cored Arc Welding (FCAW)
PRESENTATION BY- NAME FIZAR KHAN BRANCH MECHANICAL BATCH B2 YEAR 3 rd SUBMITED TO- PRO. DEPAK SHARMA DEPARTMENT OF MECHANICAL ENGINEERING PRESANTATION.
IT 208Chapter 141 ELECTRICAL WELDING Resistance Welding – The two parts are pressed together and an alternating current (A/C) is passed through the contact.
Sara $ Issa الكلية التقنية بنزوى Nizwa College of Technology Mechanical Engineering Department welding Done by: Saravanan & Issa AL-Tobi.
Fabrication Process Joining two or more elements to make a single part is termed as fabrication process. Fairly large numbers of industrial components.
Principles: WELDING PROCESS: Fusion welding Base metal is melted
Introduction to Welding
Will not burn or react with other materials A welding process that uses flux-covered metal rods called electrodes. As the flux burns, it creates a gaseous.
Fabrication Welding
WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application.
Chapter 31 Solid-State Welding Processes
GAS WELDING.
Visit for more Learning Resources
TIG welding By Mr. A Nirala Galgotias University.
Selection of solid state welding processes
Solid State Welding By A Nirala
ME 330 Manufacturing Processes WELDING PROCESSES (cont)
Fusion welding Process
BY : MECHANICAL MANIA FOUNDER: SUMIT CHAWLA
WELDING.
1. ELECTRON BEAM WELDING 2. FRICTION WELDING 3. FRICTION STIR WELDING
GTAW.
Welding Processes Gautam singh (M.E 4th yr)
A FABRICATION PROCESS PRESENTED BY- RISHABH YADAV
Unit 28: Non-mechanical joints 1 Dr
Chapter 28: Non-mechanical joints 1
Welding. Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting.
Chapter 6 Joining Process of Solid Materials
Subject Name: MANUFACTURING PROCESS Subject Code: 10AE35
Special Welding Processes
Subject Name: MANUFACTURING PROCESS Subject Code: 10AE35
Nizwa College of Technology
WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application.
WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application.
ME 330 Manufacturing Processes WELDING PROCESSES (cont)
Joining Methods: Welding Adhesive bonding Mechanical fastening.
Fabrication Welding
Presentation transcript:

Rutash Mittal M.E(CIM), B.Tech (M.E) Assistant Professor Mechanical Engineering Department, MIMIT, MALOUT Presented By:

◘ Welding is a process of joining two or more pieces of the same or dissimilar materials to achieve complete coalescence. ◘ Welding is accomplished by the use of heat and pressure. ◘ Welding is the only method of developing monolithic structure. Ω A large number of metals/alloys which are similar or dissimilar can be joined by welding. Ω Welding permits considerable freedom in design.

Welding Processes Arc, Beam & Flame Welding Process Resistance Welding Process Solid State Welding Process SeamSpotSeamSpotZonal High Heat Input Low Heat Input Carbon Arc Shielded Metal Arc Submerged Arc Fusion Arc Gas Tungsten Arc Plasma Arc Plasma MIG Electro gas Welding Oxy-Acetylene Electron Beam Laser Welding GTAW GMAW Stud Seam Electric Resistance H.F Resistance Welding H.F Induction Welding Spot Projection Resistance Butt Flash Butt Percussion Ultrasonic Explosion Cold Pressure Thermo Compressi on Friction Forge Fusion Cast Weld Process Thermit Welding Electroslag Welding

Cast weld process involves large amount of molten metal resulting in properties close to that of casting. Thermit Welding Electroslag Welding Click here

Thermit welding is a mixture of aluminium powder and metal oxide which when ignited results in a non explosive exothermic reaction. The heat so generated melts and reduces the metal oxide to metallic form at high temperature. This molten metal is used for joining metal parts by pouring it between them resulting in cast weld joint. Return to Cast Weld Process

Electroslag welding is a fusion welding process for joining thick work pieces in a single run. This is not an arc welding process though most of the setup is similar to arc welding. An essential feature of ESW process is that welding is done with weld join in vertical position. Due to high heat input the weld pool in ESW is usually quite voluminous.

In this processes those welding processes are involved which make the use of electric arc or flame obtained by burning an oxy fuel gas mixture. Size of weld pool evolved depends upon the energy input per unit time. Carbon Arc Welding Shielded Metal Arc Welding Submerged Arc Welding (SAW) Oxy-acetylene Welding Gas Tungsten Arc Welding (GTAW) Gas Metal Arc Welding(GMAW) Click here Laser Welding Electron Beam Welding

In carbon arc welding heat is produced with an arc between carbon electrode and work piece. The heat from the arc melts the work piece and filler rod if required. The weld pool produced in this process is very small therefore it can be used in all position welding process. Return to Arc Weld Process

In this process coated or covered electrode are used for producing an arc as heat source. Covering on burning provides the necessary shield to protect the molten metal from the ill effects of oxygen, nitrogen and from the surroundings. This process more popularly known as “STICK ELECTRODE WELDING” or “MANUAL METAL ARC WELDING. Return to Arc Weld Process

Submerged arc welding is a process in which continuous copper coated spooled wire is used in conjunction with loose granulated flux poured ahead of the arc so as to provide a protective media to ward off the atmospheric gases from reacting with the molten metal pool. The weld joint produced by this process is of very high quality. Return to Arc Weld Process

In this process acetylene gas is mixed with oxygen in the welding torch and is then burnt at the torch tip to give a flame with a temperatur of about 3300°C which can melt most of the ferrous and non ferrous metals in common use. Return to Arc Weld Process

GTAW employs a non consumable tungsten electrode with an envelope of inert shielding gas (argon, helium etc.) to protect both the electrode and the weld pool from the effects of surrounding atmospheric gases. GTAW is all position welding process and gives highest quality of welds amongst the commonly employed welding processes Return to Arc Weld Process

In GMAW, consumable wire bound in a spool form is fed at a preset speed through a welding torch where it is provided the electrical connection and shielding gas. The arc which is struck by the direct contact between the wire electrode and work piece is maintained at constant length by interaction of electrical parameters. Return to Arc Weld Process

In EBW a beam of electron is used to melt the metal for welding. The electron beam, emitted from a heated filament is focused on to the desired spot on the work piece surface with the help of focusing coil. The work piece which is placed in a vacuum chamber can be moved to create the necessary welding speed. Return to Arc Weld Process

In laser beam welding a monochromatic coherent light beam is used as a heat source. Laser light can be easily focused without any decrease in intensity to a very small spot giving a very high energy density. Thus a laser beam like an electron beam, can weld any known material.

In solid state welding processes the material to be welded is heated to a temperature below or just up to the solidus. The coalescence between the parts is achieved under pressure and forging plays an important role in all the processes. Friction Welding Forge Welding Ultrasonic Welding Explosion Welding Cold pressure Welding Click here

In friction welding one piece is held stationary and the other is rotated in the chuck of a friction welding machine. As they are brought to rub against each other under pressure, they get heated due to friction. When desired forging temperature is reached throughout the rubbing cross-section o f the work pieces, the rotation is stopped suddenly and axial pressure is increased to cause a forging action and hence welding. Return to Solid State Welding Process

Forge welding is the oldest known welding process. By this process the pieces to be welded are heated to above 1000°C and then placed together and given impact glows by hammering.Fluxes commonly used for forge welding low carbon steels are sand and boarx. They helps in melting the oxide, if form. Return to Solid State Welding Process

In ultrasonic welding a metallic tip vibrating at ultrasonic frequency is made to join a thin piece to a thicker piece supported on anvil. Frequency used is from 20khz to 60khz. Ultrasonic welding equipment consists of mainly two parts, one is power source and other is transducer. Return to Solid State Welding Process

In explosion welding process the weld is achieved by making one part strike against the others at very high but subsonic velocity. This is achieved by the use of explosive usually of the ammonium nitrate base. The process is completed in microseconds. The plated to be welded are placed at inclination to each other angle varies from 1° to 10°. Return to Solid State Welding Process

Cold pressure welding or cold welding is a solid state welding process in which a weld joint is produced soloely by the application of pressure at room temperature.no heat is involved in this process.the main requiremen of the process is that atleast one of the componenet shoukd be a ductile metal.this type of welding is mainly used for making lap and butt joint types.

In all resistance welding processes the heat is generated at the interface of contacting workpiece due to the resistance offered to the flow of electric current and is expressed by Joule`s law. Seam welding Spot welding Click here

In these processes the weld is established along a seam so as to make a leak proof joint. The seam weld may be produced by making partially overlapping spot welds. This process further divided into : Resistance Seam Welding Click here

In resistance seam welding wheel electrodes are used to produce spot welds due to shunting of current through already made weld the current required is higher than normal spot welds. Pressure is applied to fuse the metal properly.

In this process materials are joined at a spot the size of which depends upon the design specifications and is controlled by electrode size and the magnitude of the welding current. Resistance Spot Welding Projection Spot Welding Click here

In this spot welding process overlapping sheets are welded by flow of current between two cylindrical electrodes. The main equipment for spot welding is spot welding machine which consist of step down transformer, time control unit and pair of copper alloy electrode. Return to Spot Welding Process

Projection welding is a joining of two sheets to big bodies like automobile chasis by making raised portions or projections on one of the components. The projections are made by intersection. There are several type of projections: Round Button or Dome Type, Ring type, Elongated Projection, Shoulder Projection and Radius Projection.