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Different Common Types of Welding Process

Welding is an ordinary, professional, and vital industrial process that can solve many problems by melting and welding two pieces of metals through different procedures. Nowadays, welding is expanding more than before and plays many essential roles in our lives. Such as providing effective metalworks from house building, bridge making, and electronics to pipelines under the oceans. Suppose that no welding is possible for us; what would happen then? Is any construction built? Is any car manufactured? Our life will be defective then. We use welding to create and make new things, but welding can also use to fix and repair different objects. Some agricultural and mining machinery and equipment will erode after a long working time. Welding can cover them with a smooth and thin layer to protect them more. Also, acid tanks will corrode after a while, and welding can fix it too. These are only some of the usages of welding. With the invention of welding and the growth of technology in the first 19th century, welding started to get its position among people and workers after the Industrial Revolution. This popularity and acceptance caused it to get more advanced and improved. Many other kinds with different features and abilities appeared to use in various places and for most materials and metal. Some of the most popular types of welding which you will read more about are:

  • Gas Metal Arc Welding (GMAW)
  • Gas Tungsten Arc Welding (GTAW)
  • Shielded Metal Arc Welding (SMAW)
  • Flux-Cored Arc Welding (FCAW)

Metal Arc Welding (GMAW)

Gas Metal Arc Welding (GMAW) is one of the Arc welding processes. In this way, the Arc will occur between filler and weld pool or the base metals. The filler melts and causes welding between pieces. For the protection of weld pool and melting, protective gas will use. If the gas is inert, that is MIG, but welding is MAG if the gas is active. Metal Arc Welding (GMAW) Among inert gases, Argon and Helium are more common and functional. CO2 is suitable for MAG because it is cheaper and can affect welding oxidation. In this type of welding, there is a solid wire electrode as a filler with low slag. These wires are around a spool that feeds electrical power and the electrode. Naturally, to prevent temperature fluctuations, we warm them before use. The preheating temperature is related to its chemical, thickness, electrode dimension, and the way of joint. The burner will do this preheating. GMAW has many pros and cons.

  • First of all, this welding is suitable for welding ductile metals like aluminum.
  • With this style, you can weld without pauses, and it is ideal for long-term weldings, like in shipbuilding.
  • Another advantage of this style is to weld most of the magnetic metals.
  • GMAW is suitable for spot welding.
  • Last but not least, thanks to its concentration of arc temperature and high power to surface ratio, it is ideal for thin and straight base metals.

Gas Tungsten Arc Welding (GTAW)

Gas tungsten arc welding (GTAW) is another welding process that is the most challenging method. This method needs more time, so the welding quality and resistance are much more than other methods. The welding in this method is so clean and used when the welding line is consequential. The electrode in GTAW is a tungsten electrode that is non-consumable and remains static and intact during welding. This electrode is pure with 1 to 4 percent impurity. This electrode is made of tungsten because this element has the highest melting point. The welder needs two hands, one for taking the welding torch and another for feeding the fillers to the base metals. Gas Tungsten Arc Welding (GTAW) The welder can control the heating by a pedal. For welding thin base metals, the filler is not necessary. The selection of filler’s standard, type, and thickness is according to the base metals and their materials and the welding current. The protective gas in GTAW is Argon and Helium. Both of them are inert and can isolate the arc. Then they can protect the tungsten electrode and weld pool from O3. The usages of GTAW are in Aerospace Industries, Automotive Industries, Nuclear Systems, Shipbuilding industries, etc. The main features of GTAW are:

  • This method can be used for stainless steel, bronze, nickel, copper, manganese, aluminum, brass, and gold.
  • It is clean welding without any poisoned fumes.
  • Used for precise and perfect welding on curved and small metal bases.
  • It is functional for both thin and thick welding metal bases.
  • It helps for welding that the appearance of the welding line is essential.

Shielded Metal Arc Welding (SMAW)

Shielded Metal Arc Welding (SMAW) is a method in which flux-covered electrode is used. The flux is responsible for the protection of the arc and weld pool. The filler is the metal in the core of the electrode. In this method, both direct current and alternating current are used. SMAW has four stages:

  • The potential difference between the head of the electrode and the metal base causes an electrical current.
  • Thanks to this potential difference, the gas among the electrode and metal base will be ionized and conductor of electrical current. The arc will be formed.
  • The electrode and the metal base will play the role of cathode and anode. Electrodes move from the cathode to the anode, and this transfer causes heating and melting.
  • A Weld pool will establish, and the flux will protect it. After a little, they will get cold. Welding and slag will.

Shielded Metal Arc Welding (SMAW) Like other welding methods, choosing the proper electrode depends on the metal base. SMAW has some advantages and disadvantages. Some of the pros are:

  • Most of the steels and their alloys can be welded by this method.
  • This method can be used anywhere when another method cannot be used.
  • It is cheaper, and its equipment is easy to move.
  • There is no need for gas; flux can protect the weld pool.

Some of the disadvantages are:

  • Slags should be removed after welding.
  • Welding is not powerful enough for other metals and materials (except iron and steel).
  • Welding is not possible in bad weather and atmosphere.
  • The flume rate is high.
  • The welding quality is directly related to welders’ skills.

Flux-Cored Arc Welding (FCAW)

Flux-Cored Arc Welding (FCAW) is an automatic or semi-automatic welding method. This method needs a flux-cored electrode, stable voltage, and amperage. Protective Gas is not necessary, but sometimes, it uses. Flux protects the weld pool. Thanks to the mobility and the high welding speed, it is suitable for construction and building. FCAW can be a substitution for SMAW. The advantages of FCAW are:

  • In FCAW, welding can be done in all directions.
  • There is no protective gas in use.
  • It is suitable for welding in the wind and bad weather conditions
  • It is ideal for quick and emergency welding.
  • In comparison with GTAW and SMAW, no welding skills are necessary.
  • It is easy to move.
  • Electrode replacement during welding is not required.

Flux-Cored Arc Welding (FCAW) But FCAW has some limitations:

  • Ventilation and air conditioning are necessary.
  • Its equipment is costly.
  • There is no time to clean the slag during welding.
  • Expensive filler and electrode in comparison with GMAW.
  • Filler replacement is more complex and time taking than GTAW and SMAW.

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Average Score 5 / Number of votes: 2

Comments (30 Comments)

Zahedi

There are many types of welding and it is a pleasant job
Of course, in welding, safety precautions must be observed so as not to injure ourselves

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Bagher

Hi , That was such thought-provoking content. I was drawn to the writing.

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Safari

serves as an important factor in using tiles. Brands like DALTILE, EMSER STONE and HUSSAM STONE

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zahra

Welding is a process that can solve many problems by welding and melting two metals

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Saadat

Welding is done to connect two different plates and it is done in different ways according to the condition of the plates

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Mojtaba

Using a pimple mask protects the eyes

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Zahra

Heating and melting of materials can be done in different ways, therefore welding also has different types and methods, each of which is used in different industries. Among their main methods, the following can be mentioned: Welding in Solid state, resistance welding, oxygen gas welding, electric welding, various types of welding, other miscellaneous methods...

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Fariba

This product is excellent for welding and has unique and good quality

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Safari

The GMAW/MIG welding process uses four primary methods of metal transfer: ... The most common use of TIG Welding is to join thick sections of

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ya Roghayeeh

It was a brief and useful article, thank you for the Arad site

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Safari

Of course, naturally, all of these tasks are not at the same level in terms of difficulty, perhaps one of the simplest forms of sales is when we offer a product and get money for it, the most complex forms are when we offer thoughts and mental models and We ask for approval and support from others

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mostafa

Welding is a professional specialty and not everyone can do it. To learn about this field of work, you can refer to the article on this site and read the content.

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fatemeh

Shielded gas arc welding or GMAW in short is a type of arc welding process with continuous welding wire, which is used for aluminum welding. And argon gas is used to protect it. Of course, the welding speed in this method is low.

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Saba

Welding is used in different places and is very practical and good

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Sama

Great, I like Welding and I like to use it, it's worth a try

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Samen

Welding is one of the most widely used professions that is used to connect two plates

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Safari

most common use of TIG Welding is to join thick sections of stainless common types of welding are MIG, TIG and stick. These types of welding are often found in construction.

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Safari

GMAW/MIG welding process uses four primary methods of metal transfer The most common use of TIG Welding is to join thick sections and laser welding are versatile, powerful, automatable processes. Both can create beautiful welds from a metallurgic

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Samaneh Torabi

Welding is very enjoyable, I have experienced it, of course, safety points must be observed

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Safari

equipment review platform Welder Station lists some of the most common welding industrial sector. Three types of welding are most commonly used throughout the

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Mojtaba

The welding mask has impact-resistant glass and is of good quality

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Mosavi

One of the characteristics of welding, which can also be called as an advantage of welding, is that in welding, the connections are permanent, strong and strong. This main and key feature has caused, for example, welding in building metal framework can also be used

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Safari

The four main types of welding are: Gas Metal Arc Welding process uses four primary methods of metal transfer: (GMAW/MIG), Gas Tungsten Arc

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Alexander Hamilton

I want to share my opinion, The welder can control the warming by a pedal. For welding lean base metals, the filler isn't essential. The choice of filler’s standard, sort, and thickness is agreeing to the base metals and their materials and the welding current. The defensive gas in GTAW is Argon and Helium. Both of them are dormant and can separate the bend. At that point they can secure the tungsten cathode and weld pool from O3. The utilizations of GTAW are in Aviation Businesses, Car Businesses, Atomic Frameworks, Shipbuilding industries, etc. The most highlights of GTAW are:

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Sabani

This method uses mechanical energy instead of using electrical energy to generate the heat required for metal melting, in such a way that one of the two parts that is rotating at a high speed contacts the second part that is kept stationary due to the friction between the two parts and produces Heat, the point of contact between the two melted parts and the edges under pressure with heat are crushed together

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Mojtaba

It is mandatory to use gloves and a safety mask during welding

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hosseini

Masks, glasses and special protections must be used to perform welding work so that the rays do not harm the eyes

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hosseini

Welding requires skill and experience, you must use a mask and special goggles while doing it

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REZA NAGHDLLO

These welding products are very good and easy to weld

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Marziyeh

The welder can control the heating by a pedal. For welding thin base metals, the filler is not necessary.

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