Arc welding machine
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This document discusses arc welding and the differences between DC and AC welding machines. DC welding machines have a fixed polarity which allows them to weld both thick and thin materials. AC welding machines do not have a fixed polarity and cannot be used for all types of welding. The document also explains the concepts of straight polarity, reverse polarity, and how the magnetic field created during welding enables both forward and reverse welding depending on the direction of electrode movement.
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This document discusses the differences between AC and DC welding currents. It explains that DC current flows in one direction while AC current switches direction back and forth. DC provides a more stable arc with less spatter but is more prone to arc blow when welding magnetized metals. In contrast, AC has more spatter and a less stable arc for welding metals like steel, but is less prone to arc blow and can weld aluminum. The document outlines advantages and disadvantages of each type of current for different welding applications and processes.
presentation for smaw senior high school tm
Shielded metal arc welding (SMAW), also known as stick welding, uses electrodes coated in flux that produces a gas shield protecting the weld area. SMAW can use either alternating or direct current and is commonly used in industry. Safety precautions for SMAW include protective equipment for ultraviolet radiation, heat, sparks, fumes, and electrical hazards. SMAW machines operate using voltages from 110V to 480V and welding current flows from the electrode through an arc to the workpiece, requiring a direct current power source.
Arc welding
Arc welding is a fusion welding process that uses an electric arc to melt and join metals. It can be autogenous, using only the heat of the arc to melt the base metal without filler, or homogenous, using a filler metal of the same composition as the base. The arc is struck between an electrode and the base metal, reaching temperatures over 6000°C. Common arc welding methods include shielded metal arc welding using consumable electrodes, gas tungsten arc welding using a non-consumable tungsten electrode, and gas metal arc welding using a continuously fed consumable wire electrode and an inert gas shield.
Arc welding
Arc welding, Inert Gas welding, TIG Welding, MIG Welding,
Advantages, Limitations, applications of each Welding.
Lecture-2.2.pdf
The document discusses arc welding processes. It describes arc welding as a fusion welding process that uses an electric arc to join metal materials without applying pressure. The arc is formed when an electric current passes between an electrode and the base metal in an inert shielding gas environment or under a flux coating. It then explains some common arc welding processes in more detail, including shielded metal arc welding, gas metal arc welding, and gas tungsten arc welding.
Arc welding processes
Arc welding is a process that joins metal by heating it with an electric arc between an electrode and the workpiece. The arc produces temperatures over 5500°C, melting the metals to form a weld. Most arc welding processes use a consumable electrode that doubles as the filler material. The arc is shielded by gases like argon or fluxes to prevent contamination of the weld. Arc welding finds applications in manufacturing industries like automotive and construction due to its ability to make strong, permanent joints in metals.
Arc welding
Arc welding is a process that joins metals by heating them with an electric arc between an electrode and the workpieces. It produces temperatures around 5500-6000°C and is used to make permanent joints in manufacturing. Filler material is often added to increase the strength of the weld. The ability of a material to be welded is called its weldability. Arc welding processes include gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), shielded metal arc welding (SMAW), and submerged arc welding (SAW). Arc welding generates higher temperatures than gas welding, produces stronger joints, and has a higher welding speed.
Electric welding
This document discusses various electric welding processes. It describes resistance welding techniques like spot welding, seam welding, projection welding, and butt welding. It explains that resistance welding involves applying a heavy electric current between two metal pieces to generate heat through resistance and join the metals. The document also covers arc welding, electron beam welding, and laser beam welding. It provides details on how each process generates intense heat to fuse metals and lists common applications.
Arc welding manual
The document provides information about welding techniques and arc welding. It discusses the parts of an electric arc welding setup including the power supply, electrode, workpiece and welding leads. It describes striking an arc and different welding positions. The document outlines the advantages and disadvantages of arc welding, including its simplicity but limited electrode length. It emphasizes the importance of safety practices when arc welding.
Welding basic guide for arc welding electrodes
This document provides a basic guide to arc welding electrodes used in shielded metal arc welding (SMAW). It discusses electrode identification using the American Welding Society numbering system and describes some common electrode types including E6010, E6011, E6013, and E7018. It also covers electrode sizes, welding currents, and recommended amperage ranges.
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Introduction to arc welding
The document discusses shielded metal-arc welding equipment and processes. It describes the basic components of shielded metal-arc welding including the welding machine, cables, electrode holder, electrodes, and other accessories. It explains the different types of welding machines like motor-generators, transformers, and rectifiers. It also discusses important electrical terms, electrode selection, safety equipment, and welding procedures. The key points are that shielded metal-arc welding uses a coated electrode to generate an arc to melt and join metals, it requires various equipment operated and maintained properly, and there are many electrode and safety considerations for this welding process.
power systems ppt on Arc welding and Electric welding equipment and compariso...
power systems ppt on Arc welding and Electric welding equipment and compariso...sanjay kumar pediredla
this ppt is mainly based on the power systems related topic and in this ppt mainly consists of ac and dc weldings and which welding is used mainly and the importance of arc welding and electric welding and the techniques are also discussed in this and it is so helpful .and the safety requirements and the equipment used is also discussed in this topicPower supply required for electrical welding
The document discusses different types of power supplies required for electrical welding. It describes constant voltage and constant current power supplies, and how they differ in how they maintain output voltage or current. Transformer, generator/alternator, and inverter-based power supplies are described. The document also summarizes different types of electric welding including resistance welding (butt, flash, spot, projection), electric arc welding using metallic electrodes or carbon arc, and their applications.
BeginningWelding
This document provides an overview of arc welding, including definitions of key terms, descriptions of common equipment, safety procedures, and an explanation of the American Welding Society electrode classification system. It defines arc welding as using an electric arc to fuse metals, and outlines various types of welding machines, electrodes, the purpose of fluxes, how to establish an arc, and characteristics of proper arc length. Safety precautions are also summarized.
Intro_MMA_Welding.pdf
Manual metal arc (MMA) welding, also known as stick welding, uses a consumable electrode coated in flux to create an electric arc between the electrode and the base material being welded. The document provides an overview of the MMA welding process, including the required equipment of a power source, electrode holder, earth clamp and cables. It describes how the electric arc melts the electrode and base material to form a weld. The document also discusses electrode types and their coatings, as well as techniques for controlling the arc and depositing welds in various positions.
Welding Processes
The document discusses various welding processes used in construction. It begins by classifying welding processes into categories such as arc welding, oxyfuel welding, resistance welding, and solid state welding. It then describes specific arc welding processes like shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), flux cored arc welding (FCAW), and submerged arc welding (SAW). The document also covers topics like the concept of arc welding, power sources and polarity, shielding requirements and applications, consumable and non-consumable electrodes, and provides more details on processes like SMAW and GTAW.
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Arc welding machine
- 1. ARC Welding Machine By- Anandpatel Submitted to- Ajankyaphatak {HOD}
- 2. Today I am discussing about Arc welding. We know Arc welding is two type Then when I was studied welding .then infront of me some question.such as Why?DC welding are used for all types of welding{thick or thin material} Why AC welding machine are not .
- 3. AC welding{why does not weld alltype of joint} Ac welding polarity are not fixed… Due to polarity changes we cant use for all type of welding
- 4. DC welding machine{we use weld for thick materail} Fixed polarity With the help of fixed polarity.we can handle accoring to use thick or thin welding.
- 5. What is concept behind polarity If work piece is connect with positive terminal and electrode are connected with negative terminal then this type of polarity..called “straight polarity”
- 6. REVERSE POLARITY If work piece are connected with negative terminal and electrode are connected with positive terminal then this type of welding we called “Reverse welding”
- 7. How can work polarity When we flow current in electrode and work piece .then electrode and work piece b/w magnetic field obtain.
- 8. Magnetic field Then those magnetic field are set up b/w work piece and electrode .then due to magnetic field are some deflect in magnetic field direction. These concept are use in forward and reverse welding. When electrode are move in magnetic field direction .then we called forward welding. Due to this welding we weld very thick material. When we move electrode in reverse dirction of magnetic field.then these type of welding we called revrse welding .due to this welding we can weld thin type of material.
- 10. Thank u