Ppt on manual metal arc welding

WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application.

Chipping hammer Goggles Arc Welding Equipments Metal arc welding Arc Welding Uses an electric arc to coalesce metals Arc welding is the most common method of welding metals Electricity travels from electrode to base metal to ground Carbon Arc Welding Arc welding Advantages Limitations Most efficient way to join metals Lowest-cost joining method Affords lighter weight through better utilization of materials Joins all commercial metals Provides design flexibility Limitations Manually applied, therefore high/


WELDING PROCESSES Arc Welding Resistance Welding Oxyfuel Gas Welding

Shielding gases include inert gases such as argon and helium for aluminum welding, and active gases such as CO2 for steel welding Bare electrode wire plus shielding gases eliminate slag on weld bead - no need for manual grinding and cleaning of slag Figure 31.4 Gas metal arc welding (GMAW). GMAW Advantages over SMAW Better arc time because of continuous wire electrode Sticks must be periodically changed in/


Question 1. State two precautions associted with oxyacetylene welding.

. Edges may also be bevelled to allow good penetration and fusion. Question 7. Describe with the aid of a diagram, a manual metal arc welding circuit operating from a 220V ac power supply. Explain how such a circuit operates when supplying dc for welding Question 7. Cont. The function of the transformer is to step down the voltage without changing it’s frequency. It is/


©2007 John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing 3/e FUNDAMENTALS OF WELDING 1.Overview of Welding Technology 2.The Weld.

Some Fusion Welding Processes  Arc welding (AW) – melting of the metals is accomplished by electric arc  Resistance welding (RW) ‑ melting is accomplished by heat from resistance to an electrical current between faying surfaces held together under pressure  Oxyfuel gas welding (OFW) ‑ melting is accomplished by an oxyfuel gas such as acetylene ©2007 John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing 3/e Arc Welding A manual arc welding operation/


11 - 2  Manual arc welding  Heat for welding generated by electric arc established between flux-covered consumable metal rod (electrode) and work 

11 - 2  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) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 11 - 3/


WELDING FAMILIARIZATION

WELDING FAMILIARIZATION Welding Techniques Manual Welding : The entire welding operation is performed by hand. Semi automatic Welding : This is same as manual welding, but only the filler wire will be feed automatically. Automatic Welding :The equipment performs entire operation without adjustment of any controls Welding Process Shielded metal arc welding (SMAW): an arc welding process where electric arc is produced between electrode and the work. The shielding is done by the coating of electrode , where it/


Welding Safety.

tungsten electrode and the work. An inert gas forms around the weld area to prevent oxidation. A welding rod with no flux is used. Shielded Metal Arc Welding (SMAW) Most widely used type of arc welding Also known as manual metal arc (MMA) welding or informally as stick welding. Uses a consumable electrode coated in flux to lay the weld. Spot Welding Resistance welding process in which fusion is produced by converting electrical energy to/


Introduction & Fundamentals

is dependent on the type of metal being welded After the initial wire speed has been set, welding is started and stopped by squeezing a trigger on the gun. Only job weldor must do is position the gun properly and cross the weld joint at the proper speeds Trigger activation takes the place of the “manual striking of the arc” It is possible to set up/


Fusion-Welding and Solid State Welding Processes

electrode and the workpiece, or between two electrodes. Metal Electrodes. In bare metal-arc welding, the arc is drawn between a bare or lightly coated consumable electrode and the workpiece. Filler metal is obtained from the electrode. Various Types of Arc Welding Arc Welding Process: Various Types of Arc Welding Nonconsumable-electrode or Gas Tungsten Arc GTAW or tungsten inert gas (TIG) welding, is a manual welding process that uses a non-consumable electrode made of/


Chapter 31: Gas Flame and Arc Processes

RPDC -- direct current and reverse polarity low melt of electrode, i.e., low metal deposition rate Break up any oxide films and give deeper penetration Arc Welding Electrode Manual arc welding is almost always performed with shielded (covered) electrodes. Continuous bare-metal wire can be used as the electrode in automatic or semiautomatic arc welding, but this is always in conjunction with some form of shielding and are–stabilizing/


History of Welding Chapter 1.

Electrogas Plasma arc welding Stud welding Submerged arc welding Underwater arc welding Other Specialized Processes Include Cold welding Electron beam welding Explosive welding Force welding Friction welding Friction stir welding Laser welding Oxyhydrogen welding Thermit welding Ultrasonic welding Welding of plastics Industry Demand Over 90 welding processes defined Force new and improved developments in machines, gases, torches, electrodes, procedures, and technology Constant research for new metals done/


SMAW (Stick Welding) Chapter 5

the earth. (The flow of the water is like welding current and water pressure is similar to voltage) 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/


Unit 6 Manufacturing Processes: Machining and Joining CUTTING, SHAPING METALS MACHINE TOOL OPERATIONS.

 Thermoplastics Joining Processes 3. Welding Processes  Oxifuel Welding and Cutting  Electric Arc Welding  Shielded Metal Arc Welding  Inert Gas Shielded Arc Welding  Gas Metal Arc Welding (GMAW / MIG)  Gas Tungsten Arc Welding (GTAW/TIG)  Submerged Arc Welding  Plasma Arc Welding Joining Processes 3. Welding Processes  Resistance Welding  Stud Welding  Induction Welding  Solid State Welding Processes  Forge Welding  Ultrasonic Welding Joining Processes 3. Welding Processes  Flux: A solid/


Welding, Cutting and Brazing

Metal-Arc Welding (SMAW) Gas Metal Arc Welding (GMAW) Gas Tungsten Arc Welding (GTAW) Flux Cored Arc Welding (FCAW) Submerged Arc Welding (SAW) Arc Cutting Plasma Arc Cutting (PAC) Air Carbon-Arc Cutting (AAC) Arc Gouging Shielded Metal-Arc Welding (SMAW)  Shielded metal-arc welding is the most widely used type of arc welding, commonly referred to as "stick" welding/ Direct Current (DC) Manual 80 Volts 100 Volts Automatic Arc Welding and Cutting - Installation Arc welding requires proper installation of /


Accident Prevention Manual for Business & Industry: Engineering & Technology 13th edition National Safety Council Compiled by Dr. S.D. Allen Iske, Associate.

steel structure and connections should be capable of carrying the welding current. Arc Welding and Cutting (Cont.) Power supply Voltages Cables Electrodes and holders Protection against electric shock Gas-tungsten arc welding, plasma arc welding, and cutting Gas-Metal Arc Welding (GMAW) Defined as an arc-welding process that uses an arc between a continuous filler metal electrode and the weld pool. Also known as metal inert gas (MIG) process. Most of the processes uses an/


Shielded Metal Arc Welding (SMAW). What is SMAW? SMAW often referred to as “stick” or “manualwelding. Metal rod covered with flux that provides the.

Shielded Metal Arc Welding (SMAW) What is SMAW? SMAW often referred to as “stick” or “manualwelding. Metal rod covered with flux that provides the shielding to protect the weld. Uses constant current power sources. Most widely used form of welding in the world. Used for fabrication of ships, pressure vessels, tanks, automobiles, and appliances. SMAW Safety Eye Protection –Safety Glasses, welding helmet Proper Work Clothing –Jacket, Coveralls, gloves Electrical/


Steel and Other Metals Chapter 3.

arranged to balance each other Selection of process and equipment Higher welding speeds through use of powdered iron manual electrodes Reduces amount of base metal affected by heat of arc Prevention of Distortion Before Welding Prebending Plates bent in direction opposite to side being welded Shrinkage restrained curing welding by clamps More effective when welded members are allowed to cool in clamps When clamps removed, plates spring back/


Arc Welding Processes The first series of welding processes that we will investigate are the arc welding processes.

What would the weld metal look like? Shielded Metal Arc Welding SMAW Now let’s consider the Shielded Metal Arc Welding Process in more detail. This is typically a manual welding process where the heat source is an electric arc which is formed / low alloy steels, stainless steels, cast irons, copper, nickel, and aluminum. Shielded Metal Arc Welding Quality Issues Discontinuities associated with manual welding process that utilize flux for pool shielding Slag inclusions Lack of fusion Other possible effects /


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/


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/


Electric Arc Welding Electricity is passed through an electrode which jumps between the electrode and the work piece. This causes an arc which produces.

fuse together. (consumable electrode.) ‏ Electricity is passed through an electrode which jumps between the electrode and the work piece. This causes an arc which produces great heat melting the electrode and the work piece causing the edges to fuse together. (consumable electrode.) ‏ Manual Metal Arc Welding. The weld pool is protected from oxidation by the gasses produced by melting the chemicals on the electrode coating.The/


1 Copyright  2004 Lincoln Global Inc. Shielded Metal Arc Welding Part II A.General Information B.Polarity C.Set Up D.Striking an Arc.

Clamp Secure Lug to Cable SMAW - Lincoln Equipment Setup Magnum 300 Amp Work Clamp 13 Copyright  2004 Lincoln Global Inc. Lincoln Equipment Setup 14 Copyright  2004 Lincoln Global Inc. Shielded Metal Arc Welding Known as Stick or Manual WeldingKnown as Stick or Manual Welding Uses CC Power SourceUses CC Power Source Versatile ProcessVersatile Process All PolaritiesAll Polarities Match Electrode with Power Source, Base/


ELECTRIC ARC / WIRE WIRE WELDING

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 resembles a stick. It is also, often referred to as manual welding. The SMAW process uses constant current power sources. SMAW is the most widely used arc welding process in the world. All electrode polarities are used/


History of Welding Chapter 1.

characteristics of reduced weight and resistance to corrosion Thicker materials in construction, which required preheating using GTAW welding U.S. patent issued in 1948 for gas metal arc welding (GMAW) process Superseded earlier terms of metal inert gas (MIG) and metal active gas (MAG) Responsible for over 70 percent of welds being performed today. GMAW Process Concentrates high heat at a focal point Produces Small heat-affected/


GMAW (MIG Welding) SECTION OVERVIEW:

and cable assembly, through the 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/


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.

from 1/32 to ¼ inch in diameter Module 8 Spring 2001ISAT 430 Dr. Ken Lewis 25 Gas Metal Arc Welding Module 8 Spring 2001ISAT 430 Dr. Ken Lewis 26 Gas Metal Arc Welding Shielding Gases Inert – Ar (Argon), He (Helium) Used for aluminum alloys and stainless steels Active / Torch Brazing Oxy-fuel torch with a carburizing flame First heat the joint then add the filler metal Requires skilled labor Manual costs $300.00 Automated costs $50,000 Module 8 Spring 2001ISAT 430 Dr. Ken Lewis 52 Furnace Brazing Pre-cleaned/


Joint Design, Testing, and Inspection

Weld damaged beyond use Visual testing Surface of weld and base metal observed for visual imperfections Which should be the first inspection method used Code Welding Example Recommended dimensions of grooves for shielded metal arc welding, gas metal arc welding, and gas welding (except pressure gas welding/jig having the contour Manual, mechanical, electrical, or hydraulic means may be used for moving male member in relation to female member Specimen place on female member of jig with weld at midspan Root-, /


Welding Text book, Office hour, by appointment 1.

Consumable Electrode Arc Welding Processes Shielded Metal Arc Welding Gas Metal Arc Welding Flux‑Cored Arc Welding Electrogas Welding Submerged Arc Welding Shielded Metal Arc Welding (SMAW) Uses a consumable electrode consisting of a filler metal rod coated with chemicals that provide flux and shielding Welding Stick in SMAW Composition of filler metal usually close to base metal Coating: / less heat and lower temperatures are required Additional methods: Hand soldering – manually operated soldering gun


Miller XMT400 CC/CV Welder

manual torch has a handle while the automatic torch normally comes with a mounting rack. The internal metal parts of a torch are made of hard alloys of copper or brass in order to transmit current and heat effectively. The tungsten electrode must be held firmly in the center of the torch with an appropriately sized collet 2) Power supply Gas tungsten arc welding/ As with other welding processes such as gas metal arc welding, shielding gases are necessary in GTAW to protect the welding area from atmospheric /


General Information on Welding For the benefit of business and people Shanghai August 2007.

Welding 1  Welding is similar with metallurgy; In arc welding, energy is transferred from the welding electrode to the base metal by the electric arc. When the welder starts the arc, both the base metal and the filler metal are melted to create the weld./Heat Input and Mechanical Properties ; The heat input can vary widely depending on the process and welding condition. With Manual welding process, the technique influences the energy input. Depositing stringer beads using a small diameter electrode /


Gas Metal Arc Welding (Metal Inert Gas) (MIG) GMAW FUNDAMENTALS.

Gas Metal Arc Welding (Metal Inert Gas) (MIG) GMAW FUNDAMENTALS INTRODUCTION  GMAW is defined as arc welding using a continuously fed consumable electrode and a shielding gas.  GMAW is also known as MIG (Metal Inert Gas).  Produces high-quality welds  Yields high productivity ADVANTAGES  Large gaps filled or bridged easily  Welding can be done in all positions  No slag removal required  High welding speeds  High weld quality  Less distortion of work piece/


Copyright Prentice-Hall Chapter 30 Fusion Welding Processes.

Lowest deposition rate of all arc processes Manual GTAW requires welder skill Sensitive to drafts Plasma-Arc Welding Process Two types of plasma-arc welding processes: (a) transferred, (b) nontransferred. Deep and narrow welds can be made by this process at high welding speeds. 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. A deep weld showing the buildup sequence/


C.T.A.S. HIGH STRENGTH STEEL - YS 490 - 690 MPa Consumables optimisation for the welding of high strength steels Appendix 6 (p. 1/16)

shielding metal arc welding (SMAW) tungsten inert gas (TIG) process with “wide range” of WP  high HI / high productivity Flux cored arc welding (FCAW) Sub merged arc welding (SAW) process with “wide range” of WP  high HI / high productivity Flux cored arc welding (FCAW) Sub merged arc welding (/006% in weld metal but the total amount of N2 in the weld metal depends not only of the welding consumable but also of the skinless of the welder mainly for manual process PWHT effect on weld metal properties  PWHT/


UNIT-II SHEET METAL FORMING. CONTENTS  MATERIALS USED  SHEET METAL OPERATIONS SHEARING 1 BLANKING 2 PIERCING 3 PUNCHING 4 NOTCHING  BENDING  DRAWING.

other side. PRESSES  Manually operated presses 1. /welding:- 1) Pressure welding – Application of pressure 2) Fusion welding - without application of pressure but after heating allowed to solidify. CLASSIFICATION OF WELDING 1) Gas welding * Oxy-Acetylene Welding * Oxy-Hydrogen Welding 2) Arc Welding * Metal electrode welding * Carbon Electrode welding 3) Resistance Welding * Spot welding * Seam welding * Projection welding * Butt welding OXY-ACETYLENE WELDING Oxyacetylene welding (OAW) is a fusion-welding/


Gas Tungsten Arc Welding TSM 233 Unit 7. TSM 233 Metallurgy and Welding Processes2 What is GTAW? A welding process in which an electric arc is struck.

Gas Tungsten Arc Welding TSM 233 Unit 7 TSM 233 Metallurgy and Welding Processes2 What is GTAW? A welding process in which an electric arc is struck between a non- consumable tungsten electrode and the base metal. An inert gas is used to shield the weld area, filler metal may/or may not be used. TSM 233 Metallurgy and Welding Processes3 What are the basic components of the GTAW process/


Arc Welding Basic Safety. Warnings Welding can be safe when proper measures are taken to protect yourself and others from potential hazards. Understand.

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/


Manufacturing Processes Lab I MET 1321 Metal Inert Gas Welding (MIG)

as a shielding gas for steels. Manufacturing Processes Lab 1 (MET 1321) Prof S. Nasseri Advantages The MIG welding process provides many advantages in manual and automatic metal joining for both low and high production applications. Its combined advantages when compared to covered (stick) electrode, submerged arc, and TIG are: 1)   Welding can be done in all positions. 2)   No slag removal required. 3)   High/


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/


GMAW (MIG Welding) SECTION OVERVIEW:

and cable assembly, through the 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/


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/


Presentation Topic : Welding

any is fed into the weld Types of Welding Electric arc welding Gas Welding Resistance Welding Friction Welding Robotic Welding Electric Arc Welding The heat for fusion is supplied by an electric arc Arc is formed between electrode and work this melts and fuses the joint edges Manual Metal Arc (MMA) Applications Most widely used of all the arc welding processes Commonly called “stick” welding Applications repair work, structural steelwork, Electric Arc welding Electrode In arc welding an electrode is used to/


TIG Welding Introduction

parts in vehicles. Disconnect both battery cables before welding on a vehicle Place work clamp as close to the weld as possible Techniques for Basic Weld Joints Arc Starting with High Frequency Torch position on left shows recommended method of starting the arc with high frequency when the torch is held manually By resting gas cup on base metal there is little danger of touching the electrode/


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 “ManualWelding 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/


Arc Welding Basics SECTION OVERVIEW:

out more at www.aws.org Arc welding is most commonly used to join two pieces of metal What is Arc Welding? Arc welding is most commonly used to join two pieces of metal The welder creates an electric arc that melts the base metals and filler metal (consumable) together so that they all fuse into one solid piece of metal Steel Pipe – Tack Welded Final weld after several beads are made Root Pass/


ESAB University & Florence-Darlington Technical College

-Darlington Technical College GMAW Fundamentals Gas Metal Arc Welding Metal Inert Gas By: Wanda Sue Benton ESAB University & Florence-Darlington Technical College Introduction GMAW is defined as arc welding using a continuously fed consumable electrode and a shielding gas. GMAW is also known as MIG (Metal Inert Gas). Produces high-quality welds Yields high productivity Advantages Large gaps filled or bridged easily Welding can be done in all positions/


This Presentation is provided to you by:

(contd. …1) All SS types Weldable by virtually all welding processes Process selection often dictated by available equipment Simplest & most universal welding process Manual SMAW with coated electrodes Applied to material > 1.2 mm Other very commonly used arc welding processes for SS GTAW, GMAW, SAW & FCAW Optimal filler metal (FM) Does not often closely match base metal composition Most successful procedures for one family Often markedly/


Welding and Cutting Safety

potentially hazardous materials are employed as base metals, fluxes, coatings, platings or filler metals. These include, but are not limited to, the following materials: Beryllium Lead Cadmium Mercury Chromium Zinc Fluorides Inert-gas metal-arc welding or oxygen cutting of stainless steel Except /created by the flame to burn your skin. Sparks, molten metal and the flame can burn you, wear protective clothing. Oxyfuel Cutting (OFC) OFC can be a manual process in which the welder must control the the torch /


PTA Hardfacing Arcraft Plasma India.

bond strength of 65000 psi while a average NTA ( Non Transferred Arc ) deposit would feature about 6500 psi . This is because PTA deposits are welded on the substrate. PTA is suitable for manual, semi or fully automatic operations using manipulators, positioners , oscillators and/repetition i.e. use of ‘multiple passes’. Wide range of materials: The substrate to be coated may be any industrial metal or alloy. Even difficult materials HCHC alloys, die steels, hot-die steels, HSS etc can be easily coated with /


ENCE 455 Design of Steel Structures

fused with a molten filler metal. Upon cooling, the structural steel (parent metal) and weld or filler metal will act as one continuous part. The filler metal is deposited from a special electrode. A number of welding processes are used, depending on the application Field welds Shop welds Basic of welding (cont) Basic process: Shielded Metal Arc Welding (SMAW): Normally done manually and is widely used for field welding Current arcs across the gap between/


Grade 11 Welding Simulation Lesson COURSE CODE: WELDS1002 (STSENGS873) To identify MIG welding equipment and describe the welding procedure To identify.

you will be looking at in this course : MMA Manual Metal Arc (also called Stick welding or Shielded Metal Arc Welding - SMAW) MIG - Metal Inert Gas welding (also called Gas Metal Arc Welding – GMAW) TIG – Tungsten Inert Gas welding (also called Gas tungsten Arc Welding -GTAW) (Today we will look at MIG and TIG welding) Metal Inert Gas Welding - MIG (also called Gas Metal Arc Welding – GMAW) Mig Welding is the most common electric ARC welding process used today. It is cheap, easy to/


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