Ppt on shielded metal arc welding

Gas Tungsten Arc Welding

using the gas tungsten arc welding process Effects on the weld of varying torch angles Why and how the filler rod is kept inside the protective zone of the shielding gas How tungsten contamination occurs and what to do Causes of change in welding amperage Correct settings for the minimum and maximum welding current Objectives (continued) Types and sizes of tungsten and metal Factors affecting gas preflow/


Welding Chapter 14 IT 208 Chapter 14.

of granular flux. Low-carbon, low alloy, and stainless steels can be readily welded by SAW. Electrogas Welding (EGW) – uses a continuous consumable electrode (either flux-cored wire or bare wire with externally supplied shielding gases) and molding shoes to contain the molten metal. Shielded Metal Arc Welding (SMAW) (stick) – arc is struck between the rod (shielded metal covered by flux) and the work pieces to be joined, the impurities rise/


Welding Basics Manufacturing Technology HPEDSB.

sub-categories. 1. Fusion 2. Non-Fusion Any welding operation involving melting of the base or parent metal. The joining of metals without melting the base or parent metal. Each sub-category can be broken into methods of welding Gas Welding (oxy-acetylene torch) GMAW (Gas Metal Arc Welding) SMAW (Shielded Metal Arc Welding) GTAW (Gas Tungsten Arc Welding) Brazing (oxy-acetylene torch) Fusion Welding # 1 Gas Welding Oxygen Regulator Gauges Acetylene Regulator Gauges Uses the heat/


ELECTRIC ARC / WIRE WIRE WELDING

between AC, DC power input I can compare and contrast transformers, rectifiers and AC welding equipment. I can identify electrodes and their application I can identify welding equipment, positions and equipment. WELDING BASIC TRAVEL ANGLE WORK ANGLE SMAW SMAW is the AWS name used by the American Welding Society for Shielded Metal Arc Welding. Stick is the most commonly used name for SMAW. This is because the electrode/


History of Welding Chapter 1.

this one, on plate and pipe, led to growth of industry. Welds are sound and have uniform appearance. Pass 2 Pass 3 History of Metalworking Stick welding process Advanced rapidly due to electrode coatings and improved core wire Now called shielded metal arc welding (SMAW) X-ray development Possible to examine internal soundness of welded joints Shipbuilding 5,171 vessels constructed to American Bureau of Shipping standard/


Material Joining ISAT 430 Module 8. Spring 2001ISAT 430 Dr. Ken Lewis 2 Joining Technologies Joining is a many splendored thing. Welding Arc or melting.

the consumable electrode) is usually very close in composition to the metal being welded. The coating contains Cellulose, carbonates, a silicate binder Sometime other metals to alloy the joint Module 8 Spring 2001ISAT 430 Dr. Ken Lewis 22 Shielded Metal Arc Welding Module 8 Spring 2001ISAT 430 Dr. Ken Lewis 23 Consumable Electrode Welding Shielded Metal Arc Welding (SMAW) The stick is about 12 – 18 inches long Applications Construction, pipelines, shipbuilding, fabrication/


Welding and Cutting Part 1926 Subpart J.

shall be protected in the same manner as the welder or burner)(1) 1926.353 Ventilation & Protection Inert-gas metal-arc welding Since the inert-gas metal-arc welding process involves the production of ultra- violet radiation of intensities of 5 to 30 times that produced during shielded metal-arc welding, the decomposition of chlorinated solvents by ultraviolet rays, and the liberation of toxic fumes and gases, employees shall not/


Copyright Prentice-Hall Chapter 30 Fusion Welding Processes.

Note the formation of a flash at the joint, which can later be trimmed off. Arc Welding Processes Most prevalent welding processes that employ an electric arcShielded Metal Arc Welding (SMAW) –Gas Metal Arc Welding (GMAW) –Flux Cored Arc Welding (FCAW) –Submerged Arc Welding (SAW) –Gas Tungsten Arc Welding (GTAW) These processes are associated with molten metal Protection of the Molten Weld Pool Molten metal reacts with the atmosphere –Oxides and nitrides are formed –Discontinuities such as porosity –Poor/


Introduction to Welding Tech Connect Welding Tech Connect Welding.

obtained from decomposition of the electrode coverShielding is obtained from decomposition of the electrode cover Pressure is not usedPressure is not used Welding Processes (continued) Filler metal is obtained from the electrodeFiller metal is obtained from the electrode Shielded Metal Arc Welding (SMAW) (continued) Is popular because it can be used in the field without complicated equipment and gasesIs popular because it can be used in the/


Topic : welding Presentation by: N.SHASHANK REDDY-BT14EEE058 NAITIK ATUL SHAH-BT14EEE059 N.HARSHITHA-BT14EEE060 N.HARSHA VARDHAN REDDY-BT14EEE061 NIKITA.

edges of the workpiece. Carbon arc welding  Common types of arc welding used in practice:  Shielded metal arc welding:  Shielded metal arc welding (SMAW), also known as manual metal arc welding (MMA or MMAW), flux shielded arc welding or informally as stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld.  Gas Shield Arc Welding:  In this fusion process, welding is done with bare electrodes but weld zone is shielded from the atmosphere by a/


Manufacturing Processes Lab I, MET 1321 Gas Tungsten Arc Welding (TIG)

1321) Prof S. Nasseri Welding Processes Shielded Metal Arc Welding (Stick welding) Gas Metal Arc Welding (MIG) Gas Tungsten Arc Welding (TIG) Flux Cored Arc Welding Submerged Arc Welding Plasma Arc Welding ARC Welding (AW) Oxyfuel Welding OFW Oxyacetylene Welding (OAW) Resistance Welding RW Manufacturing Processes Lab 1 (MET 1321) Prof S. Nasseri Gas Tungsten Arc Welding (GTAW) Tungsten Inert Gas (TIG) GTAW or TIG is an arc welding process in which a shielding gas protects the arc between a non consumable/


Arc Welding Basic Safety.

on / off. Make sure the switch function properly at all times. SMAW Principles The American Welding Society defines SMAW as Shielded Metal Arc Welding SMAW: Is commonly known as ‘Stick’ welding or manual arc welding Is the most widely used arc welding process in the world Can be used to weld most common metals and alloys SMAW Welding Circuit Current flows through the electrode cable, to the electrode holder, through the electrode, and/


WELD DEFECTS ( WELD DISCONTINUITIES ), DISTORTION AND ITS CONTROLS

Research Establishment Bangalore Types of Welding Fusion Welding Manual Metal Arc Welding Shielded Metal Arc welding Submerged Arc Welding Gas Tungsten Arc Welding (GTAW) or (TIG) Gas Metal Arc Welding (GMAW) or (MIG) Flux Cored Arc Welding Resistance Welding- Spot Welding and Seam Welding Electrogas Welding (EGW) Electron Beam Welding (EBW) Laser Beam Welding High Frequency Welding Non – Fusion or Solid State Welding Diffusion Welding Ultrasonic Welding Friction Welding Definition The word “Defect “ should/


GMAW (MIG Welding) SECTION OVERVIEW:

gas nozzle, and into the welding zone. GMAW is the most widely used arc welding process in the United States GMAW Definition GMAW stands for Gas Metal Arc Welding GMAW is commonly referred to as MIG or Metal Inert Gas welding During the GMAW process, a solid metal wire is fed through a welding gun and becomes the filler material Instead of a flux, a shielding gas is used to protect/


SMAW.

THE PUDDLE Shielded Metal Arc Welding (SMAW) Flux Core Arc Welding (FCAW) No-Slag Welding Processes ALWAYS PUSH THE PUDDLE Gas Metal Arc Welding (GMAW) Gas Tungsten Arc Welding (GTAW) Oxy-Fuel Welding SMAW Process 1 2 3 4 5 6 1 4 6 3 2 5 Travel direction Electrode Arc Weld Puddle 3 Shielding Gas 4 Solidified Weld Metal 5 Slag 6 Electrode 1 Travel direction Shielding Gas 4 Slag 6 3 Weld Puddle 2 Arc 5 Solidified Weld Metal Activity Let/


Joining Processes WELDING

Consumable Electrode Arc Welding Processes Shielded metal arc welding Submerged arc welding Gas metal arc welding Consumable Electrode Arc Welding Shielded-Metal Arc Welding Schematic illustration of the shielded metal-arc welding process. About 50% of all large-scale industrial welding operations use this process. Consumable-Electrode Welding: Gas Metal-Arc Welding (GMAW) - MIG Consumable gas metal-arc welding (MIG) Consumable electrode is metal which melts to become part of the weld seam. Weld zone is/


OSHA Outreach Safety Training General Industry Safety Standards

Fire resistant clothing protect from sparks and hot metal. Safety Shoes Protective eye wear with proper filter. (Welding Helmet) Filter Lens Shade Number Guide Welding Operation Shade Number Shield Metal Arc Welding up to 4 mm electrode 10 Shield Metal Arc Welding (4.8 to 6.4 mm) electrodes 12 Shield Metal Arc Welding (6.4 mm) electrode 14 Gas Metal Arc Welding (Nonferrous) 11 Gas Metal Arc Welding (ferrous) Gas Tungsten Arc Welding Carbon Arc Welding 10 – 14 Torch Soldering 2 Torch Brazing 3/


TIG Welding Introduction. 2 Outline ► Background/Advantages & Disadvantages Background ► Safety Safety ► Preparation for TIG Welding Preparation for TIG.

Manual Torch Movement ► Torch and filler rod must be moved progressively and smoothly so the weld pool, the hot filler rod end, and the solidifying weld are not exposed to air that will contaminate the weld metal area or heat affected zone ► When arc is turned off, postflow of shielding gas should shield the weld pool, electrode, and hot end of the filler rod 18 Techniques for Basic/


AWS Qualification Program

of energy to provide heating, a means of shielding the molten metal from the atmosphere, and a filler metal (optional with some processes and joint configurations). SMAW Shielded Metal Arc welding. It is referred to also as “stick welding”. This process operates by heating the metal with an electric are between a covered metal electrode and the metals to be joined. The arc is created between the electrode and the work piece/


Welcome To WELDING PROCESSES. A Presentation by: John Clulow. SAPIS / APIU.

work 2” and below. 2. S.M.A.W. Shielded Metal Arc Welding or Stick Welding. Used for all pipe work 3. G.M.A.W. Gas Metal Arc Welding or MIG. Used mainly in shop fabrication 4. S.A.W Submerged Arc Welding. Used in shop fabrication and production welding. Manual Metal Arc Welding or MMA is also known as shielded metal arc, stick welding, or electric arc welding. It is the oldest and most versatile of the various/


Joining and Cutting Processes. Engr 241-R11 Fusion Welding Processes Fusion Welding involves heating two materials above their melting temperatures (electrically.

/Removes oxides or other substances Stronger joints Engr 241-R110 Arc Welding Processes (Consumable Electrode) Developed in the mid-1800s Heat obtained through electrical energy Engr 241-R111 Shielded Metal Arc Welding (SMAW) Stick welding 50% of all large-scale industrial welding operations- portable process. Electric arc generated between tip of coated electrode and the workpiece. Electrode coating produces a shielding gas to protect from oxygen. Engr 241-R112 11/


Arc Welding (SMAW) Meridian Ag Department Course Information Packet Name:_____________________________________ Date:______________________________________.

Packet Name:_____________________________________ Date:______________________________________ Shielded Metal Arc Welding SMAW (Stick) 2 What is SMAW? SMAW = Shielded Metal Arc Welding “Stick” Welding or “Manual” Welding Metal Rod Covered with Flux that Provides Shielding to Protect the Weld Uses Constant Current Power Sources Most Widely Used Arc Welding Process in the World 3 Shielded Metal Arc Welding An arc welding process with an arc between a covered electrode and the weld pool. The process is used/


TIG Welding Introduction by Daniel Min. ENBE 4992 Outline ► Background ► Advantages and Disadvantages ► Safety ► Preparation for TIG Welding ► Techniques.

Torch Movement ► Torch and filler rod must be moved progressively and smoothly so the weld pool, the hot filler rod end, and the solidifying weld are not exposed to air that will contaminate the weld metal area or heat affected zone ► When arc is turned off, postflow of shielding gas should shield the weld pool, electrode, and hot end of the filler rod ENBE 49926 Techniques for Basic/


Manufacturing Processes Lab I MET 1321 Stick Welding

Prof S. Nasseri Welding Processes Shielded Metal Arc Welding (Stick welding) Gas Metal Arc Welding (MIG) Gas Tungsten Arc Welding (TIG) Flux Cored Arc Welding Submerged Arc Welding Plasma Arc Welding ARC Welding (AW) Oxyfuel Welding OFW Oxyacetylene Welding (OAW) Resistance Welding RW Manufacturing Processes Lab 1 (MET 1321) Prof S. Nasseri Shielded Metal Arc Welding (SMAW), or Manual Metal Arc (MMA) welding or Stick Welding Shielded metal arc welding is performed by striking an arc ( electronic current AC/


MIG-Wire Welding instructables.com.

inert gas makes this type of welding less portable than arc welding which requires no external source of shielding gas Produces a somewhat sloppier and less controlled weld as compared to TIG (Tungsten Inert Gas Welding) Credit: http://www.instructables.com/id/How-to-Weld---MIG-Welding/ Comparing The Most Common Weld Types Stick Weld Technically called Shielded Metal Arc Welding, or SMAW, Stick welding is the simplest of all welding processes. It requires nothing more/


History of Welding.

restriction was put in place after World War I. 1940s With World War II GTAW was found to be useful for welding magnesium in fighter planes, and later found it could weld stainless steel and aluminum. 20th Century (continued) 1940 Gas shielded metal arc welding developed by Hobart and Devers at Battelle Memorial Institute. 1942 Chief of Research, V. H. Pavlecka, and engineer Russ Meredith of/


Welding Processes EN358 – Ship Structures A Brief History of Welding Late 19 th Century Scientists/engineers apply advances in electricity to heat and/or.

in the war effort to build tanks, aircraft, ships, etc. Modern Welding the nuclear/space age helps bring welding from an art to a science Types of Welding Fusion WeldingPressure Welding HomogeneousHeterogeneous BrazingSoldering Gas Welding Electroslag High Energy Beam Electric Arc MIG TIG Shielded Metal Arc – “Stick” Friction Welding Weldability of a Metal Metallurgical Capacity Parent metal will join with the weld metal without formation of deleterious constituents or alloys Mechanical Soundness Joint will/


Presentation Topic : Welding

becomes shorter & periodically needs replacing Slows production rate (% time welder welding) Metal Arc Gas Shielded (MAGS) MIG MIG is similar to MMA in that heat for welding is produced by forming an arc between a metal electrode and the workpiece.But we use very long electrode wire rolled on pulley. Applications Welding Sheets and Heavy plates, production welding by robots on cars MIG is similar to MMA in that/


High Energy Beams and Related Welding and Cutting Process Principles

the molten material Laser Beam Welding (LBW) Generally done with inert shielding gas to shield weld pool Can be used without filler metal (autogenous) or with filler metal Little distortion Highly concentrated /Arc Welding Hybrid application of several processes Laser beam and gas metal arc Laser beam (CO2 or Nd: YAG) combined in one weld pool with gas metal arc Allows flexibility in which materials can be joined and types of welds made by addition of filler metal Gas metal arc power determines width of weld/


Chapter 5: Welding Process

processes are listed as follows :- Shielded Metal Arc Welding (SMAW) Gas Tungsten Arc Welding (GTAW) Oxyacetylene Welding (OAW) Torch Brazing (TB) Chapter 5: Welding Process 5.2 ARC WELDING PROCESS Shafizan Bt. Shariffuddin School of Manufacturing Engineering UniMAP Fundamental Of Arc Welding One of the most important processes in industry is the fusion of metals by an electric arc. This is commonly called arc welding or SMAW (Shielded Metal Arc Welding). Arc welding is widely used in the manufacturing/


Welding Workshop Technology

Types of Welding Arc Welding Shielded Metal Arc Welding Gas Metal Arc Welding Gas Tungsten Arc Welding Gas Welding Oxyacetylene Welding Resistance Welding Resistance Spot Welding Resistance Seam Welding Energy Beam Welding Electron Beam Welding Laser Beam Welding Solid State Welding Ultrasonic Welding Friction Welding Friction Welding is considered a forging process however it is common to be referred to as welding. Weld Joints ARC WELDING Arc Welding Process In arc welding, a welding power supply is/


Teknologi Las Kapal Shielded Metal Arc Welding. Teknologi dan Rekayasa Shielded Metal Arc Welding (SMAW)  Manual arc welding  Heat for welding generated.

Teknologi Las Kapal Shielded Metal Arc Welding Teknologi dan Rekayasa Shielded Metal Arc Welding (SMAW)  Manual arc welding  Heat for welding generated by electric arc established between flux-covered consumable metal rod (electrode) and work  Called stick electrode welding  Combustion and decomposition of electrode creases gaseous shield  Protects electrode tip, weld puddle, arc, and highly heated work from atmospheric contamination Additional shielding provided by covering of molten slag (flux) /


BASIC MECHANICAL ENGINEERING UNIT 4 MANUFACTURING PROCESSES PART 1 – FOUNDRY PRACTICE PART 2 – WELDING.

name, tungsten inert gas (TIG) welding. Advantages: 1.No flux is required. 2.High welding speed and 3.Can be used for ferrous and non-ferrous metals. G AS METAL ARC (GMAW) WELDING OR METAL INERT GAS (MIG) WELDING This process is also called as metal inert gas (MIG) welding. A consumable metal is fed from a reel through gaseous shield to serve as an electrode. An arc is established between the wire/


SMAW (Stick Welding) Used with permission of: LINCOLN ELECTRIC, INC.

below) ** Information taken from ANSI Z49.1:2005** 7 SMAW Principles 8 The American Welding Society defines SMAW as Shielded Metal Arc Welding SMAW: –Is commonly known as ‘Stick’ welding or manual arc welding –Is the most widely used arc welding process in the world –Can be used to weld most common metals and alloys 9 SMAW Welding Circuit Current flows through the electrode cable, to the electrode holder, through the electrode, and/


BASIC MECHANICAL ENGINEERING UNIT 4 MANUFACTURING PROCESSES PART 1 – FOUNDRY PRACTICE PART 2 – WELDING.

name, tungsten inert gas (TIG) welding. Advantages: 1.No flux is required. 2.High welding speed and 3.Can be used for ferrous and non-ferrous metals. G AS METAL ARC (GMAW) WELDING OR METAL INERT GAS (MIG) WELDING This process is also called as metal inert gas (MIG) welding. A consumable metal is fed from a reel through gaseous shield to serve as an electrode. An arc is established between the wire/


Chapter 8: Welding, Heating, and Cutting. Objectives Describe when to use and when NOT to use certain welding processes for collision repair Name the.

indicates the correct wire-to-heat ratio If wire speed is too slow, a hissing and plopping sound is heard Too much wire speed chokes the arc, the wire melts into tiny balls of metal that fly away from the weld, creating a strobe light arc effect Shielding Gas Flow Rate MIG gas flow rate is a measurement of how fast gas flows over the/


Non-Consumable Electrode

Consumable Electrode Fusion Welding Processes Welding Processes Consumable Electrode SMAW – Shielded Metal Arc Welding GMAW – Gas Metal Arc Welding SAW – Submerged Arc Welding Non-Consumable Electrode GTAW – Gas Tungsten Arc Welding PAW – Plasma Arc Welding High Energy Beam Electron Beam Welding To be finished Laser Beam Welding Welding Processes SMAW – Shielded Metal Arc Welding Consumable electrode Flux coated rod Flux produces protective gas around weld pool Slag keeps oxygen off weld bead during cooling/


Advanced Welding.

from one electrode to the other, initiating the arc Shielding gases in arc welding Tungsten inert gas welding (TIG) Tungsten electrode-30000C Argon and Helium Filler material is added as in gas welding Schematic of TIG Shielding gases in arc welding Metal inert gas welding (MIG) Consumable electrode Argon, Helium and Carbon Dioxide No filler materials MIG weld area: Positions and arc welding Risk involved in arc welding 1. Exposure to radiation 2. Flying sparks 3/


Tungsten inert gas welding (tig)

exposed to air that will contaminate the weld metal area or heat affected zone When arc is turned off, postflow of shielding gas should shield the weld pool, electrode, and hot end of the filler rod Argon/Helium Mixtures TIG Shielding Gases Argon Helium Argon/Helium Mixtures Helium Argon TIG Shielding Gases Good arc starting Good cleaning action Good arc stability Focused arc cone Lower arc voltages 10-30 CFH flow rates/


PLASMA WELDING.

WELDING Plasma is commonly known as fourth state of matter after solid, liquid and gas. This is an extremely hot substance which consists of free electrons, positive ions, atoms and molecules. It conducts electricity. How it works: By positioning the electrode within the body of the torch, the plasma arc can be separated from the shielding/Welds dissimilar metals • No filler metals necessary • No secondary finishing necessary • Extremely accurate • Welds high alloy metals without difficulty CO2 Laser Welding/


WELDING AND JOINING PROCESSES

AND JOINING PROCESSES Table 4.1 Welding Processes Braze Welding Forge Welding (P) (S) ME 333 PRODUCTION PROCESSES II Table 4.1 Welding Processes Braze Welding Forge Welding (P) (S) Gas Welding (Oxyacetylene) (F) Resistance Welding (P) (F) Spot Seam Butt Projection Induction Welding (P) Arc Welding (F) Carbon Electrode Metal Electrode Shielded Unshielded Electron Beam Laser Welding Friction Welding (P) (S) Termite Welding Cold Welding (P) (S) Flow Welding Explosion Welding (P) (S) 16.04.2017 CHAPTER 4/


1 2.008 Design & Manufacturing II Spring 2004 Welding & Joining 2.008-spring-2004 S.Kim.

electron at cathode is given by three components: Kinetic energy Drop across cool gas boundary Work function(heat of condensation) 2.008-spring-2004 S.Kim 27 Consumable electrode processes   Shielded metal arc welding   Cheapest and most basic process < $1,500   50A-300A, <10KW   Workpiece thickness 3-20mm 2.008-spring-2004 S.Kim Slag Coating deoxidizes/


11 - 1 Shielded Metal Arc Welding (SMAW) Arc welding –Heat for welding generated by electric arc established between flux-covered consumable metal rod.

11 - 1 Shielded Metal Arc Welding (SMAW) Arc welding –Heat for welding generated by electric arc established between flux-covered consumable metal rod (electrode) and work Called stick electrode welding Combustion and decomposition of electrode creases gaseous shield (Gases given off) –Protects electrode tip, weld puddle, arc, and highly heated work from atmospheric contamination Additional shielding provided by covering of molten slag (flux) Copyright © The McGraw-Hill Companies, Inc. Permission required /


Industrial Processes II INDUSTRIAL PROCESSES II INDEN 3313 Lecture 6 – Case Study Fusion Welding -- Oxyfuel and Electric (Arc) Welding Processes.

Provision of Non-Corrosive EnvironmentProvision of Non-Corrosive Environment –Electro-Gas Welding (EGW) Inert Gas Supplied –Electroslag Welding (ESW) Slag Used to Shield Technically, Arc is Extinguished - Resistance Used To Heat Industrial Processes II SHIELDED METAL ARC WELDING [Kalpakjian, Figure 27.4, p. 862] Industrial Processes II SUBMERGED METAL ARC WELDING [Kalpakjian, Figure 27.7, p. 864] Industrial Processes II GAS METAL ARC WELDING [Kalpakjian, Figure 27.8, p. 865] Industrial Processes II FLUX/


焊 接 (Welding) 目的 : 1. 結合兩個或數個工件成一體。 2. 期望經焊接後之組件能夠符合實際 應用上之要求 : (1) 強度、韌性、延性, (2) 耐腐蝕, (3) 耐高溫 3. 應用 : 機械結構件、航空零件、船體、 儲油槽、天然氣槽.

of incomplete fusion. Source: American Welding Society. Discontinuities in Fusion Welds Figure 29.7 Schematic illustration of various discontinuities in fusion welds. Source: American Welding Society. Welding Methods 1. Electrical: Resistance welding Induction welding Electroslag welding Electron beam welding Arc welding Shielded metal arc welding (SMAW) Gas metal arc weldind (GMAW) Gas tungsten arc welding (GTAW) Plasma arc welding (PAW) Submerged arc welding (SAW)) Welding Methods 2. Mechanical: Friction/


Shielded metal arc welding process Fig : Schematic illustration of the shielded metal-arc welding process. About 50% of all large-scale industrial welding.

arc welding process Fig : Schematic illustration of the shielded metal-arc welding process. About 50% of all large-scale industrial welding operations use this process. Fig : Schematic illustration of the shielded metal-arc welding process ( also known as stick welding, because the electrode is in the shape of a stick). Submerged arc welding: Fig : Schematic illustration of the submerged-arc welding process and equipment. The unfused flux is recovered and reused. Submerged arc welding: Weld arc is shielded/


GAS TUNGSTEN ARC WELDING (GTAW). GTAW – (also referred to at TIG – Tungsten Inert gas or Heli-arc). An electric arc produced between a metal electrode.

ARC WELDING (GTAW) GTAW – (also referred to at TIG – Tungsten Inert gas or Heli-arc). An electric arc produced between a metal electrode and the metal being welded. Completely shielded by a gas blanket to protect the weld, the arc and the electrode from contamination from atmospheric gases such as oxygen, hydrogen and nitrogen. GTAW – (also referred to at TIG – Tungsten Inert gas or Heli-arc). An electric arc produced between a metal/


Arc Welding SMAW Shielded Metal Arc Welding (SMAW). Electricity, as it jumps a gaseous gap between two conductors. Shielded Metal Arc Welding (SMAW). Electricity,

Arc Welding SMAW Shielded Metal Arc Welding (SMAW). Electricity, as it jumps a gaseous gap between two conductors. Shielded Metal Arc Welding (SMAW). Electricity, as it jumps a gaseous gap between two conductors. Produces an arc as intense as 9000 . Produces an arc as intense as 9000 . I. Types of Welders Rectifier Rectifier – D.C. (Direct Current) Electricity is converted from A.C (Alternating Current) through transformers and rectifiers. – A.C./D.C/


MY PRESENTATION TOPIC  Tungsten Inert Gas(TIG)  Metal Inert Gas(MIG)  Resistance Welding  Spot  Projection  seam Submitted By:- GIRISH KUMAR 1214340066(B2)

of wire feed welders  Gas metal- arc process (MIG)- This system has a continuous feed of solid wire.  Uses on DC current with reverse polarity.  Used a mild steel.  Used on thinner metals. ENBE 499 24 Gases used to form a shield  Carbon Dioxide.  Argon.  Helium.  Combination of 1,2 and3. ENBE 499 25 Advantege  No flux required.  High welding speed.  Increased corrosion resistance.  Easily/


GMAW FCAW and MCAW Gas Metal Arc Welding Flux Core Arc Welding Metal Core Arc Welding Unit 6.

GMAW FCAW and MCAW Gas Metal Arc Welding Flux Core Arc Welding Metal Core Arc Welding Unit 6 TSM 233 Metallurgy and Welding Processes 2 What is GMAW?  Gas Metal Arc Welding  GMAW is produced by an electric arc between the base metal and a solid wire continuously fed electrode using a shielding gas.  Also called MIG welding (Metal Inert Gas) TSM 233 Metallurgy and Welding Processes 3 What is FCAW? Flux Core Arc Welding Very similar to GMAW, except it/


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