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Principle ofarc weldingPDF

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Also referred to as spot welding, this process works to join metal together through the process of passing a current between electrodes that are positioned on opposite sides of the workpieces. No arc is generated during this method, and it is used primarily for welding two or more sheets of metal together using pressure and heat. Resistance to the metal with the flow of current causes the metal to fuse.

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4 types ofarc welding

This benefit ties a bit into the speed of welds, but electric arc welds typically tend to be more efficient than other welding methods. Along with a higher production rate, they are more cost-efficient over time, especially compared with gas welds that require the frequent purchase of welding gases. Higher heat allows arc welding to be more efficient at melting metal and reduces the risk of distortion.

The production rates for electric welding versus other processes are often much faster. Most arc welding machines don’t require preheating and produce higher levels of heat, which helps make for quicker welds. Setup also takes less time compared with gas welds, where gas torches and regulators need to be adjusted.

Knowing different types of welding can help prepare you for the field and help your resume stand out when applying for jobs.

What is arc welding

In the SMAW process, also known as stick welds, metals are melted and joined together through an arc that is between a flux-covered metal electrode and a workpiece. The process utilizes constant-current equipment to create the necessary heat. The weldment is shielded from the electrode’s outer coating, known as flux.

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It’s easier to get more consistent and higher-quality welds with electric welding. The quality of the weld largely has to do with the higher temperatures generated during the process, which offer a better fusing of the metals and deeper penetration.

Electric arc weldingdiagram

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Universal Technical Institute of Illinois, Inc. is approved by the Division of Private Business and Vocational Schools of the Illinois Board of Higher Education.

There are four types of electric welding taught at Universal Technical Institute: gas metal arc welding, gas tungsten arc welding, shielded metal arc welding and flux-cored arc welding. Electric arc welding differs from gas welding in terms of temperature, speed, cost and power supply requirements.

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The arc created works to melt the base metal and filler metal, which combines them into one material. The filler metal gets consumed during the process. A welding circuit is created, which is a pathway that a welding output flows through — consisting of the electrode, work cables or leads, a power source and the electric arc.

What is welding fabrication? Read our guide on the importance of fabrication in welding and how UTI can help you learn this in-demand skill!

If you’re thinking about pursuing a career in welding, there’s no better place to start than at one of UTI’s campus locations.1 Get the training and knowledge you need at one of the campuses offering our Welding Technology program:

Advantages ofelectric arc welding

Welding is a skill used in many industries, from automotive maintenance to manufacturing and construction. Skilled trade workers who possess the right amount of training and experience are sought after by employers.

This process is sometimes referred to as tungsten inert gas (TIG) welding. It uses a direct current or alternating current electric arc. It’s like GMAW in the fact that a shielding gas is used. However, GTAW heats objects using a tungsten electrode, which sends a current to the welding arc (in GMAW, a wire acts as a filler material).

Electric arc weldingmachine

What is electric welding? Electric welding is a skill used in various industries and is sought after by employers. Electric welding works by creating an electric arc between a workpiece and an electrode, melting the base metal and filler metal to join them together. Electric welding offers benefits such as higher production rates, consistency and efficiency.

Constant voltage equipment is utilized in the FCAW process, which creates heat from a direct current electric arc. Current is carried between a continuous hollow wire that features a flux compound, which works to protect the weld pool. There is an option to utilize an external shielding gas, but it’s unnecessary if the flux compound is being used as the shielding agent.

Learn about gas welding and find out what gas to use for different applications. Find out about gas welding techniques and their pros and cons.

Also referred to as both metal inert gas (MIG) and metal active gas (MAG) welding, GMAW utilizes constant voltage equipment to create heat from a direct current electric arc. Metals are heated by this arc between a continuously fed wire and a workpiece. The gas in the name refers to the externally supplied shielding gas, which could be inert (nonreactive) or active.

Electric arc weldingPDF

There are several electric welding methods used in the industry. Four of them are taught at UTI: gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), shielded metal arc welding (SMAW) and flux-cored arc welding (FCAW).

So, how does a welder work electrically? Electric welding works when an electrical arc is created from an intense amount of heat. This arc gets formed between a workpiece and an electrode, which can be a rod or wire that is along the joint connecting the two.

Gas welding is often referred to as oxy-acetylene welding or oxy-gasoline welding. Instead of using electricity to generate heat like electric arc welding, gas welding utilizes flammable gases to do so.

Electric welding is one of the most common welding methods, and it offers many benefits to the user. It’s the predominant method used in industries nationwide for many reasons, including:

Electric arc weldingprocess

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The electrodes used during the process may be either consumable or non-consumable, depending on which method is used. A consumable electrode will become a part of the weld bond, acting as filler material. A non-consumable electrode remains unaffected, as a separate welding rod or wire serves as the filler material.