Welding is the procedure of combining products by melting them through sufficiently high heat and consequently letting them cool off so that they strongly collaborate.
Nevertheless, the term itself isn’t as much uncomplicated as we think.
There are many complex and diversified types of welding that exist so regarding properly carry out the combining procedure according to the primary goal.
Presuming this reality, we are going to show you about 14 different types of welding and what they are utilized for.
So let’s start:
1. Shielded Metal Arc Welding (SMAW)
Shielded Metal Arc Welding is the easy procedure of manually joining products through decomposing a wire of electrode that’s been covered with flux and is put down in between the metal and electrode in the form of an arc.
The procedure is fueled by an electric current and as soon as the melting procedure is performed, the disintegrated electrode creates some vapor which is generally referred to as the protecting gas, and hence produces a slag layer throughout the bonded location. This layer secures the metal from all sorts of climatic contamination.
Let’s check out some of the advantages and defects of this particular welding procedure:.
Advantages: The primary benefit of this welding procedure is its simplicity and inexpensiveness. Besides, it is one of the most popular and widely utilized welding procedures because of its versatility and simplicity.
Drawbacks: 2 of the typical defects connected with this procedure are porosity and weld spatter. 2 other usual downsides which are the risk of burn and skin damage can take place from any other welding procedure if sufficient preventative measures are not carried out properly.
2. Plasma Arc Welding
Plasma Arc Welding is performed by forming an electric arc right in between the workpiece and the electrode. The electrode is generally located inside the torch and the plasma goes through a copper nozzle which as a result forms the arc.
If you read through the types of welding we have discussed here, you’ll see this procedure is quite comparable to that of Gas Tungsten Arc Welding whereas the only distinction lies on the capability of the first one to separate the protecting gas from the plasma arc.
Let’s discover its advantages and downsides:.
Advantages: The torch which is developed to perform Plasma Arc Welding enables a welder to be effective sufficient to get the controlling of the arc and for that reason to observe the total welding procedure. Besides, the plasma jet and increased heat concentration ensure faster travel speed.
Drawbacks: The types of equipment utilized in Plasma Arc Welding are relatively costly than that of other procedures which result in greater startup expense. Besides, some specialized training is needed for the welders to properly carry out this job.
3. Flux Cored Arc Welding (FCAW)
Flux Cored Arc Welding is performed through a continually fed electrode wire which has flux in it and continually operates on a consistent welding power supply system. The arc location is secured by the continuous supply of protecting gas that secures the weld swimming pool from all sorts of climatic contamination. Besides, the protecting gas is normally provided from an external link & the flux likewise works as a protective supplement for contamination (en.wikipedia.org).
Flux-cored arc welding is popular in the welding market because of its portability and speed. Flux-cored welding is quite comparable to that of MIG welding although both of them have numerous technical differences.
Advantages: Some appealing advantages of using this welding procedure are low startup expense and a higher deposition rate. Besides, a lot of steel applications do not need any protecting gas to be used while performing this procedure. On top of that, the opportunities of porosity are super less in comparison to other welding strategies and the electrodes are extremely economical as they are flux-cored.
Drawbacks: One of the typical problems of this method is the sensitivity of the electrode as it’s been made from mild steel or alloy. This attribute is likewise referred to as voltage tolerance which can be bypassed by supplying protecting gas to the weld swimming pool and by keeping a consistent electrode feeding speed.
4. Submerged Arc Welding
As the name recommends, Submerged Arc Welding likewise uses a continually fed electrode wire to molten the arc before which the weld swimming pool is immersed under a flux layer including silica, lime, manganese oxide, and other supplements. This flux secures the welding location from all sources of climatic contamination along with avoids weld spattering and reduces high ultraviolet radiation.
Nevertheless, no protecting gas is needed to carry out this procedure. In addition, there is no possible ways for heat loss as the whole arc is covered with a layer of flux and the slag layer can be removed consequently.
Advantages: Some advantages of this procedure consist of a high deposition rate and the capability to prevent weld spattering to the weld metal. Besides, it has a much faster take a trip speed and can secure the air from high radiation.
Drawbacks: The key limitation of this procedure is only a handful variety of products can be bonded through using this welding procedure. And these are stainless-steel, nickel alloy, and steel.
5. Electroslag Welding
Electroslag Welding is a bit complex and different procedure from that of other welding procedures. The main parts that play the key function are the electrode and flux.
Basically, the flux does the primary work. It melts the filler metal and the workpiece by changing electrical energy into heat energy and consequently, this heat develops the joint.
At first, the arc is produced in between the electrode and the base metal after which the flux is added. Now, this development produces a high temperature that naturally warms the flux and produces a slag layer.
As a result, the slag reaches a temperature level of 3500F which suffices to melt the metals and made a strong joint in between the electrode wire and the workpiece.
Advantages: The primary benefit of this welding procedure is the low cooling rate that avoids it from cold breaking. Besides, the procedure is quite faster and there are extremely low opportunities of porosity because of the sophisticated system.
Drawbacks: A crucial drawback of this welding procedure is the limitation in carrying out the job on vertical positions only. Besides, the excessively high temperature may sometimes need a heat control system.
6. Gas Metal Arc Welding (GMAW/MIG)
Based on [dcl=8743], Gas Metal Arc Welding, likewise referred to as Metal Inert Arc Welding is an easy welding procedure that produces an arc in between the electrode and the weld metal whereas, the electrode is fed by a nozzle within which there’s another separate nozzle for the protecting gas to pass. This protecting gas secures the weld metal from all sorts of climatic contamination.
Apart from that, a consistent welding power supply is needed to successfully perform the job. GMAW welding can be performed by using one of these four methods: short-circuiting, pulse spray, globular, or normal spray.
Advantages: Some advantages of the GMAW procedure includes greater travel speed, low hydrogen welding which can avoid undesirable hydrogen breaking. Besides, the capability to easily change from semi-automatic to totally automatic for increased output.
Drawbacks: The weapon size is relatively larger which can be an obstacle for reaching smaller locations. Besides, the startup expense is a bit high because of the complex equipment required to duly perform this procedure.
7. Gas Tungsten Arc Gas Welding (GTAW/TIG)
Gas Tungsten Arc Welding, aka Tungsten Inert Gas Welding, is a special welding procedure where the electrode is generally non-consumable and is utilized to perform the welding task & the development of an arc.
As the name recommends, the electrode is basically made from tungsten. The weld location is duly secured by a protecting gas that makes up Helium and Argon.
Filler metals can be utilized in the welding procedure if it’s thick, otherwise, there’s no requirement for using any filler metal for thinner products and welding joints.
Advantages: Some advantages of this procedure consist of no weld-spattering and focused arc development which enables a welder to reach narrower weld locations to supply intense heat. Apart from that, as no fluxes have been utilized in this procedure, there is no production of slag.
Drawbacks: 2 of the key restrictions of this procedure are the lower travel speed and lower deposition rate of the filler metal.
8. Laser Beam Welding (LBW)
Laser Beam Welding is an easy welding procedure that uses a laser beam to supply focused heat to the wanted welding location which as a result melts the welding metal and forms a joint in between the two edges.
There are basically four types of equipment required to carry out this job. They are the laser, a constant source of power, WEB CAM & CAD integration for the design, and precise operation by the computer. Protecting gas might be utilized while performing this welding job.
Besides, this procedure is mostly utilized in extremely automated markets such as electronic equipment manufacturing and automotive.
Advantages: Some profitable advantages of this procedure consist of narrow heat-affected zones, strong and precise welding, the capability to weld a broad range of metals, lower scrap generation, and the reality that the light can be placed while making a range from the welding metal.
Drawbacks: The key drawback of this welding procedure is the greater purchase expense of all equipment, consisting of the filler material. Besides, maintenance expenses are likewise high and a specialized workforce is required to carry out the whole job.
9. Electron-Beam Welding
Electron-Beam Welding is performed by supplying high-velocity electron beams to the welding location which as a result melts the metals and strongly joints the edges.
Besides, no filler products are utilized to carry out the procedure. To prevent electron beam dissipation, the procedure is performed under vacuum conditions.
Electrons are generally produced by electron guns after which their speed is extremely accelerated through electrical fields.
Consequently, they are precisely focused and applied to the welding products by using electromagnetic fields.
Advantages: Advantages of this procedure consist of smaller heat-affected zones, strong and precise welding, and the capability to join dissimilar products which can be a crucial benefit for any welder. Besides, this procedure doesn’t need any filler material which causes low cost.
Drawbacks: Some downsides of this procedure are the complexity of the equipment and the initial startup expense. Besides, safety measures ought to be taken versus damaging radiation.
10. Laser-Hybrid Welding
The laser hybrid welding procedure is the mix of Arc welding and Laser Beam Welding. This procedure is performed by initially heating up the surface area of the workpiece with the help of a laser.
By doing this, the metal reaches its vaporization point and makes a narrow and deep penetration to that location. Later, the arc is formed precisely onto the edges which will lead to a strong fusing of the parts.
Advantages: Some advantages of using Laser Hybrid Welding consist of greater welding speed and the capability to join hard welding products because of its strong energy generation.
Drawbacks: The only drawback may consist of the initial setup expense which is comparatively less than normal laser beam welding.
11. Resistance Welding
Resistance welding is performed by supplying a constant circulation of electrical current to the weld metal that provides heat to that location and as a result melts the metals to be collaborated.
Besides, a constant force or pressure is simultaneously provided to that location which helps to strengthen and strongly joints the edges together.
There are four types of resistance welding methods that are regularly utilized. They are seam welding, spot welding, resistance butt welding, and flash welding.
Advantages: Some advantages of using Resistance Welding are greater welding rates, expense performance, and the capability to automate the procedure in a simple and easy manner. Besides, it creates extremely low fumes and distortions.
Drawbacks: 2 of the typical defects connected with this procedure are greater startup expense and alternate welding that normally result in lower strength.
12. Carbon Arc Welding
Now, Carbon Arc Welding is performed by a non-consumable carbon electrode whereas the heat is produced from the electrical arc which melts the filler rod to form a strong joint.
The application of protecting gas is optional for protecting the metal from climatic contamination.
Nevertheless, this kind of welding has been in use given that the invention of the welding method itself for which it can be thought about as the oldest welding method on the list.
Advantages: Some advantages of Carbon Arc Welding are lower equipment expense, low workpiece distortion, and the capability to easily automate the procedure on-demand, without hiring any special workforce.
Drawbacks: In some cases, the weld metal gets infected with the carbon inside the electrode.
13. Gas Welding (GW)
Gas Welding is generally performed by supplying continuous flame from the welding torch.
The torch simultaneously provides oxygen from another cylinder in addition to the fuel gas in a required percentage.
This flame triggers the melting of the parts and forms a strong joint after solidification. Using filler rod is conditional and fluxes might be utilized to secure the weld swimming pool from contamination.
There are mainly 3 types of gas welding methods that are regularly utilized. They are oxyhydrogen welding, pressure gas welding and, oxyacetylene welding.
Advantages: This procedure is quite helpful for its versatility and portability. In addition, it doesn’t need any electrical energy to carry out the job and the expenses of equipment are relatively lower in comparison to other welding procedures.
Drawbacks: Unique workforce is needed to carry out this welding procedure.
14. Thermit Welding (TW)
Thermit Welding is an easy welding procedure that uses an exothermic chain reaction to produce heat.
Basically, this Thermit is comprised of a mix of aluminum powder and a metal oxide that produces heat after reaction and, for that reason, melts the metal which creates a strong joint after solidification.
This procedure is typically utilized over steel parts.
Advantages: 2 key advantages of using this procedure are the capability to weld larger and thicker parts of metal. Alongside, no electrical energy is needed to carry out the job.
Drawbacks: The range of welding parts is limited to Steel, Nickel, and chromium. Besides, the welding speed is relatively slower than other welding procedures.
Thanks for checking out the whole article. Our company believes youhave actually got a detailed idea about all the different types of welding and what they are utilized for.