For anyone who wants to learn how to MIG weld, the most important first step is to learn a bit about what MIG welding is, what it is used for and some of the most common MIG welding techniques.

What Is MIG Welding

MIG stands for metal inert gas, and is a type of gas metal arc welding (GMAW).  Although MIG welding is simply a type of GMAW, it is the most common process and you will very often see the two terms used interchangeably.

MIG welding is a type of arc welding which uses a consumable wire electrode and a shielding gas in order to create quick, strong welds.  The consumable electrode acts not only as a source of the electric arc but also as the filler metal for your welds.

As the wire is fed through the welding rod it produces an electric arc which melts itself into a molten pool which allows you to weld as quickly as you’re skilled to and the wire is fed.  Anyone who wants to learn how to MIG weld must become proficient in the speed of your weld – MIG welding too slowly will cause a buildup of the filler material on your joint while going too quickly will not leave enough metal to join your pieces.

One aspect of MIG welding is that is uses an inert or semi-inert gas to act as a shield for the weld.  Without this shielding gas, contaminants such as nitrogen or oxygen from the atmosphere will get into the weld, weakening your joints.  The two most common types of shielding gases used are argon and carbon dioxide, usually mixed.

If you’re not too familiar with how to MIG weld, or are unfamiliar with proper gas mixes, it is important to use a reference guide to ensure you’re using the proper mixture for your materials and MIG welding techniques.

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Applications For MIG Welding

MIG welding was originally designed for use in aluminum as the types of gases originally used were not strong or affordable enough to penetrate heavier metals.  As carbon dioxide became commonplace in the welding industry, MIG welding began to be used effectively on steel which it is primarily used on today.

If you are looking for a career in welding, it is essential to learn how to MIG weld.  MIG welding is used almost exclusively for spot welding, sheet metal fabrication, and in the automotive industry.  Other, more advanced, applications for MIG welding include both underwater and in space.

MIG welding is the most common welding process employed in industrial settings, and it is imperative that anyone looking for a career in welding be knowledgeable and experienced in how to MIG weld and in a variety of MIG welding techniques.

MIG Welding Techniques

MIG welding techniques are fairly simple to learn compared to some of the other types of welding processes.  Learning how to MIG weld is the easiest place to start for someone who is interested in arc welding processes.

MIG welding techniques require less skill than other welding processes because of the consumable wire electrode that is fed into the welding rod.  Rather than having to feed wire separately, you’re welding machine will do this for you.  That being said, it still takes a good amount of knowledge and practice to be efficient with MIG welding techniques.

The distance between your electrode tip and the pieces being welded is called the stick-out distance.  It is important to have a proper stick-out distance for the work being done.  Generally, your gap would be between 1/4th and 1/2th of an inch.

While this range may seem like a very small one, it is imperative to have a steady hand and keep the appropriate stick-out distance for your project.  Holding the welding rod too close can put holes right through thinner surfaces, while poor MIG welding techniques can cause thicker materials not to be welded strongly.

If you are just learning how to MIG weld, it is advisable that you obtain reference cards on appropriate MIG welding techniques.

 The first step in order to learn how to TIG weld is to learn about TIG welding, it’s useful applications and some of the most common TIG welding techniques.

What Is TIG Welding

TIG stands for tungsten inert gas because of the non-consumable tungsten electrode that TIG welders use.  TIG welding is a type of gas tungsten arc welding (GTAW).  Tungsten active gas (TAG) is another process, albeit less often used, of GTAW.  If you want to learn how to TIG weld for most commercial welding jobs, you will not often need to use TAG welding.

TIG welding is a type of arc welding which means that it uses a metal electrode, in this process Tungsten, in order to great an electric spark to heat filler metal to molten liquid in order to bond two metal work pieces together.  Unlike MIG welding, TIG welding uses a non-consumable tungsten electrode forcing the welder to feed filler metal separately.

TIG welding is similar to MIG welding in the fact that it uses an inert shielding gas, most often Argon, to protect the weld from oxygen, nitrogen and other environmental containments.  As you learn how to TIG weld you’ll notice that different materials will require different gases and sometimes a combination of gases.

The fact that welders employing TIG welding use a variety of different filler metals will allow you to learn how to TIG weld for a variety of different applications.

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Applications For TIG Welding

The most common application for TIG welding is the aerospace industry.  Nearly all work done on airplanes, space shuttles and their respective parts are done using TIG welding techniques.  Because of the ability to use filler metals dependant on the project, TIG welding allows aerospace welders to create very strong, study bonds that can withhold the extreme pressure and environments that such projects will need to endure.

For applications that require strength over a very long period of time such as in nuclear containment, TIG welding is the chosen process because the joints are very resistant to cracking and corrosion if welded properly.  For work in industries that require the most sturdy and strong of welds, it is imperative that a welder learn how to TIG weld.

This process is one of the more difficult to learn because of the different variables such as gases and filler material, along with many complicated TIG welding techniques.

TIG Welding Techniques

As you learn how to TIG weld, it is very important that you learn a variety of TIG welding techniques to ensure you have the property knowledge to complete the required projects.  Since TIG welding can be used on so many different materials, with so many different filler metals, there is a number of TIG welding techniques that you’ll need.

The most important TIG welding technique that you need to master is to always use push welding.  This means that you will always push forward, ahead of the welding puddle, as opposed to pulling behind it.  Not only does the push technique give you a better view of the welding puddle, but it also gives you better gas coverage on the spot that you are welding which further ensures that atmospheric impurities are not getting into your joints.

Also, in the case of welding with alternating current, the push TIG welding technique makes sure that all oxides are removed from the welded material creating an even stronger weld.  It is strongly recommended to pick up specific, professional material on the numerous TIG welding techniques if are serious about learning how to TIG weld.

One of the most significant considerations in arc welding is safety. Arc welding safety is very important and it is truly is vital to keep a supply of welding gloves, welding helmets and welding blankets that are appropriate to the job. Specific sorts of welding and unique varieties of material demand distinct solutions. That is why it can be important to know Arc welding fundamentals.

Many varied environments in welding such as open air, outer space and under water can use various systems. Of course, these distinct environments require different energy sources like gas flame, an electric arc, gas flame or laser.

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There are several distinct kinds of welders. The TIG (tungsten inert gas) welding program, especially in micro welding equipment, allows for quite accurate and quick cuts. If the regulator has pulse control, this also aids in creating smoother cuts along with a far better quality of weld. This is particularly true when the weld is around a corner joint. TIG also uses and electrode to heat the metal and some kind of inert gas, usually argon, to prevent the molten material from reacting too promptly with air.

Tungsten is utilized in the welding business due to the fact it melting point is extremely high, approximately 3422 degrees Centigrade. This high melting point makes tungsten perfect for electrical jobs and for arc welding where temperatures can jump a thousand degrees in a incredibly short time period.

MIG (metal inert gas) is a different kind of arc welding which is completed with the use of a DC arc that has filler that has been placed on a spool. Reviews show that this is often the selection for bodywork or sheet metal. Even with safety equipment, burns can occur. Harm to eyes is commonplace for probably the most portions due to ill-fitting equipment for example welding helmets and gloves. Heat resistant clothing is also available and must be considered it the budget allows. Common sense plus precautions function hand in hand in welding.

Learning how to weld can be a long process – sometimes taking an entire life to master, but by understanding the basics you will be able to understand the different aspects of welding, how they all work together, and how you can use this knowledge to become a more proficient welder.  This introduction to welding will cover all of the basics about how to weld including what is welding, a brief history of welding and the prominent different types of welding.

An Introduction To Welding

Welding is the process of joining two or more different work pieces, most often pieces of metal, together to form one solid, sturdy product.  With modern advances in synthetic materials, welding is possible with materials other than metal, but this introduction to welding will focus on the welding of metal.

The most common types of metal that you will encounter while you learn how to weld are going to be steel and aluminum, depending on what type of welding and project your pursue.

Welding works by joining multiple work pieces together at their seams (edges) through a process of heating filler metal to a molten state, connecting the pieces, and then allowing the molten “joints” to cool and harden.

While in theory this sounds very simple, there is a lot that you need to learn about what types of filler metals to use, the gases you use and how they react with different types of metals, the size of welding flame you need, how to properly hold the welding torch for your specific project, welding techniques to use to create a sturdy joint and countless other specifics.

Learning how to weld is a complicated process that without proper instruction can be difficult to master.

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A Brief History Of Welding

Welding has its roots thousands of years in the past, dating back as far as the bronze and iron ages.  Primitive craftsmen first used molten metal to join larger pieces to use in weapons, armor and construction.  This early welding is nothing like the scientific and advanced practices that we have now, but its importance is still very significant.

In the 1800’s electric arcs were discovered, the first major breakthrough in welding as we know it today.

Over the next 100 years, metalworkers developed ways how to weld that harness electric arcs into a constant, steady source of energy to bind metal together.  In the early 1900’s, major advances such as using shield gases and automatic electrode feeding were seen which set the stage for modern welding.

The welding community is continuously striving to make welding more efficient, safer and simpler for the average welder.

Types Of Welding Used Today

The two most common types of welding in practice today are gas welding and arc welding.  Although advances in how to weld have moved the industry further toward arc welding, gas welding is still a process that maintains a lot of use due to the ease of using it for small welds and repairs.  This introduction to welding will provide insight into both processes.

In application, the type of gas welding generally used is generally oxyacetylene welding.  This basic type of welding uses acetylene gas which combusts in pure oxygen in order to make a focused flame which heats to around 3100 °C in order to join the work pieces together.  Because of the simplicity of this type of welding, its uses are limited due to the relatively crude outcome.

While not applicable for large or commercial products, gas welding is an easy, affordable way for a beginning learning how to weld to become familiar with different types of welding techniques.

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More common in practice today, arc welding is generally used by all serious welders, both as hobbyists and in commercial settings.   The three prominent types of arc welding are stick welding (sometimes called shielded metal arc welding [SMAW] or manual metal arc welding [MMA]),  metal inert gas (MIG) welding (sometimes called gas metal arc welding or GMAW) and tungsten inert gas (TIG) welding which is sometimes referred to as gas tungsten arc welding (or GTAW).

If you’re just learning how to weld, it is crucial that you become familiar with arc welding.

Stick welding is the simplest type of arc welding as it simply uses an electrode to create an electric arc between the welding rod and the pieces being welded.  This electrode acts as the filler material and creates an easy way for beginners to get familiar with arc welding.

This type of arc welding is appropriate for smaller projects where the strength of the weld is not too important, such as in decorative welding.  For the beginning, learning how to weld with arc welding, stick welding provides the easiest and most affordable way to get started

MIG welding uses a continuously fed wire electrode to create a non-stop welding pool that allows for quicker and more efficient welding.  MIG welding also uses an intern gas mixture in order to shield the weld from contaminants that would otherwise get into the welding pool and take away strength from the weld.

This type of welding is much stronger and quicker than stick welding but requires more time and resources that many people learning how to weld are not ready to put in initially.

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TIG welding is similar in principle to MIG welding, but instead of using a continuously fed electrode, it uses non-combustible tungsten electrodes in order to create a constant source of heat while using separate filler material to join the work pieces.  Which more complicated and requiring more expertise, this allows TIG welding to be used for applications that require the utmost strength and stability from the weld.

TIG welding may be an advanced topic for an introduction to welding, but it is still a very important one.  Once you have a solid grasp of how to weld and practice in the field, you’ll want to focus on learning how to TIG weld – especially if you plan to pursue welding as a career rather than a hobby.

This short introduction to welding should have provided you with the basics about the different types of welding that you’ll need in order to learn more specifics about welding processes and techniques that you’ll need in your journey to learn how to weld like a professional.

The automotive manufacturing business has embraced automated welding in a huge way for a long time. The abilities of robot welding have caused the number of units to grow to extra 120,000 units as of 2005. Early growth within the numbers of robotic units was limited by the high equipment costs and somewhat limited application of automated welding to high production scenarios.

Just before 2009 the growth within the number of automated welding units had attained 20% of the total of all industrial robot applications. The robotic welding unit which is a member of this population is produced up of the manipulator along with the controller, which tells the manipulator what to do. The welding unit can be based on a SCARA robot or it may be Cartesian.

The style of the total unit is often based on the way that the welding work station will be integrated with other work stations.

Automated welding is a great improvement over the results which are attained by manual welding. The good quality and consistency of automation far out paces what might be completed by hand. The two main characteristics that define the top quality of a weld are weld integrity along with the repeatability of a weld.

With an automated welding function station the integrity of the weld is produced by means of the electronic weld method controllers. Repeatability of top quality welds can be a result of the mixture of trained torch and part movements along with the recall of welding parameters from the controllers.

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These two elements just cannot be consistently repeated in a manual welding method. So long as the welding work station can present the parts to be welded consistently within the range of tolerance which is required by the manufacturing procedure, the welds ought to normally be the exact same good quality. Human errors and inconsistencies are eliminated by the placement of parts by a robotic device.

Manual welding generally will yield a specific percentage of scrap, requiring rework or loss of supplies. The human work within the welding operations is often impacted by fatigue and other inconsistencies that contribute to the have to have for closer good quality control.

The advent of automated welding in manufacturing cuts the expenses of scrap and of close scrutiny by excellent control. Automated welding increases the throughput of the welding work station. Having a robot do the welding increases the safety in the plant, though the price of getting the job carried out is reduced substantially.

Following the installation of a welding work station a organization can get a quick return on its investment. You’ll find two kinds of welding function stations that will be added to the production line, semiautomatic and automatic.

The semiautomatic work station has a human tender whose responsibility is to load the part which is to be welded into the fixture. The vital movement of the torch, consistent stillness of the part, and retrieval of weld parameters are performed by the controller. When the weld is completed the tender removes the completed portion to begin the method once again.

With the automatic welder performs all the tasks without the have to have of a tender. Both the semiautomatic and automatic welding function stations have cycle times that are not dependent on any human intervention, so the production line will run at a consistent speed. A provider which is displacing quite a few talented welders from the production line by installing automated welding work stations should enable for the retention of welding abilities.

It takes a training and practice to develop a high degree of skill in manual welding. It probably would be a good idea for some of that manual welding skill to be kept viable for possible use in the future. Also it’s critical for the organization to do all needed maintenance on the welding work station to keep it running at maximum pace.

Historically, providers would not desire to be involved in attempting to use automated welding work stations in their production lines due to a feeling that welding is too complex to automate.

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All too several manufacturing operations would spend a great deal of funds automating other parts of the production method. The welding would stay a manual method. As time has passed plus a better understanding of the welding procedure has been gained, there have been a lot more organizations realizing the positive aspects of automated welding.

Price could be a limiting factor for some manufacturers. To setup a semiautomatic welding work station it might price as significantly as $30,000, whilst an automatic 1 may possibly cost as a lot as $250,000. With this amount of variation the organization ought to evaluate the return on investment that the suitable device will give prior to picking out which one to employ.

There’s some lead time in bringing any new work station on-line. A manual welding function station can commence working in some hours, even though a semiautomatic work station might be working in a couple of months.

The automatic work station possibly would take about 4 or five months to be operational. Not all production welds are great candidates for automated welding. Those that do have a high qualification are the ones which can be accomplished repetitively, with the exact same weld becoming performed each and every time.

Typically welds that have a high will need for top quality are good candidates for automation. Some items which are incredibly superior candidates for automated welding are batteries, fuel filters, solenoids, relay enclosures, capacitors, pipe fittings, plus a lot of other items that are produced in high daily quantities.

Manufacturing operations that produce in small batches would greatest be served by semiautomatic as opposed to automatic welding work stations.

Welding metal can be a really astounding field as well as a excellent approach to earn your living. You can find three major methods you are able to understand the welding trade. In this write-up we’re going to speak about the 3 ways you how to learn welding.

A. The way to discover welding through College: This will be the initial way of learning welding which is generally by means of a course provided by a community college, or trade school. There are many colleges who present short term and long term courses. Their versatile and flexible curriculum gives you a notion and teaches you basic steps of welding through easy process. Some courses also contain practical welding processes with the theory. The courses commence right after the application method in a specific college of choice, followed by enrollment in a certain welding courses.

B.  Ways to Learn Welding – Learning via On-line courses: Online welding training classes is also an additional way to understand welding method. It consists of text materials and video training courses which you could also follow at home. Many individuals prefer the second way because of the flexibility of training. With its rapidly enrollment and top quality teaching approaches, on the net course is becoming very common among the students. You will not have any daunt in mind now regarding the way to understand welding at residence and with ease.

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C. How to Learn Welding – Welding DVDs for understanding: The third way of understanding is through special welding DVDs, which are available in the market and give an chance to watch the training as lots of times as you would like to. These DVDs are instructive and comprehensive. These DVDs are endowed with many useful directions to follow and work on even though giving a detailed concept on the best way to learn welding at the exact same time. Some benefits of learning by means of DVDs are lined below.

• These provide the exact same comfort and convenience as on the web classes.
• You may watch each and every section all over once again.
• Studying specialized welding from a DVD is equivalent to in-person training of the trade schools although expenditure is rather less than any other techniques.

With the help of these whole options one can quickly understand the detailed process of welding and employed for a highly paying job. Based on individual preference and life situation, a mode of learning is always chosen. To turn out to be a happily employed welder, you should look in to all of these options and choose which one to adapt.

With the educational tools you also need to practice a great deal to grow to be a great welder in no time. “How to learn welding” will never be a subject to ponder soon after you attempt any of these alternatives listed above.

For you students out there doing a report on the history of welding, let me first say this… I have generally found the earliest history of welding to be sort of boring. But I keep in mind back to high school when my ears perked up in history class at the first mention of longbows. So I will attempt to make this intriguing by talking about swords and airplanes. This is truly a lot more like the history of metallurgy.

I will save the history of welding for Part 2. Let’s get the boring stuff out of the way 1st. None of these dates are difficult facts and I’m likely going to omit some important terms like “Paleolithic” but that’s how we roll up in here.

So here goes.

From the incredibly beginning of mankind, up until about 8000 BC was recognized as the Stone Age. Up until about 8000 BC, stone was employed to make cutting tools and spear heads and things like that. Despite the fact that copper was discovered during the Stone Age, it was too soft to use for tools and weapons.

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Around 3500 BC, someone discovered that adding tin to copper produced a significantly harder metal than pure copper and that began what exactly is known as the Bronze Age. Bronze swords and knifes had been used until around 1500 BC when the method of refining iron ore into useable iron was discovered.

Then began the Iron Age.

So this timeline gives a basic view of what makes up the Stone Age, Bronze Age, and Iron Age. Boring right? Well think about this… not each country, tribe, or race discovered iron at the identical time.

Let’s say you’re living within the city of Troy. You might be a foot soldier and you might have the latest and greatest bronze sword at your side. You believe you might be high tech. Your shield is also made out of bronze and easily stops the strongest of blows from other bronze swords.

You are getting ready for battle when you get a report from a scout that the neighboring Trojans have developed a magic metal sword which will cut your sword in half and that will penetrate your shield. You shrug it off as war propaganda but that small tidbit of facts lingers inside the back of your mind. It’s time to go to war now. Your adrenaline is pumping, war cries are heard, horns are blown and you rush the enemy.

You anticipate certain victory but if you start tripping over your own soldiers and notice they’re holding shiny bronze swords that have been cut in half, you bear in mind the story about the magic metal.

Oh snap! It is a poor day for the guys with the bronze swords when they go into battle against iron swords. I hope things are becoming a bit less boring…

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Now quickly forward to 2009. A fighter pilot flying an F 22 raptor is about to engage in a dogfight. He knows you’ll find limits to just how much throttle he can give to out maneuver his enemy. An excessive amount of throttle under the wrong conditions will overstep the turbine blades and make them soft and unstable and perhaps even blow up the motor.

And what if his enemy is flying a fighter jet that uses a new alloy that would allow for a boost of various hundred degrees before they reached overheats condition? He could put the hammer down without worrying about overheating. Would that give a pilot a distinct advantage? It might be just like a bronze sword against an iron sword. The more issues alter the extra they remain the same.

Two basic varieties of gas welding torches exist. The first type uses fuel and air to be able to heat metals although the second makes use of fuel and pure oxygen to produce a flame which is so hot that it really is able to weld challenging metals. Quite a few scenarios exist in which either selection of torches might be utilized.

Similarities exist between the techniques in which both kinds of torches are operated. Even so limitations also exist in relation to their interchangeability. Propane torches employed by plumbers are a prime example of Air-Fuel torches.

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One of the most obvious limiting factors will be the heat (approximately 3500 degrees F.). Air is really a mixture of 30% oxygen and 70% nitrogen and as a result, the huge majority of the fuel expending in the course of the burning process is utilized to heat the nitrogen and this does not serve to increase the energy of the flame.

Regardless of this limitation, this type of torch is affordable to buy and is often employed for a wide selection of purposes. Their low heat means that this kind of torch is unsuitable for a substantial majority of welding operations. Nonetheless they prove suitable for use in soldering and brazing or for property orientated projects.

These torches can be utilized to repair air conditioning units and copper plumbing fixtures discovered in homes and workplaces. They’re invaluable for projects which involve the bending and shaping of metal or lead work.

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Oxygen and fuel torches are normally referred to on the basis of the type of fuel that they use, oxy-map, oxy-propane and oxy-acetylene being superior examples. When pure oxygen is thrown into the mix, the heat produced drastically increases. The heat produced ranges in temperature.

Propane ordinarily produces heat of 5000 degrees F. whilst map produces heat of 6200 degrees F. Acetylene produces heat of 6500 degrees F. but it is also the priciest. The drawback of these varieties of gas torch kits is that they’re expensive. Nevertheless, in the past few years lots of outstanding mini setups have turn out to be out there at inexpensive prices.

The selection of function able to be performed with the use of these torches increases with the cost. Metals of increasing thickness and bigger selections of materials might be welded with the additional high-priced models. Oxygen and fuel torches are advantageous as having a alter of tip; they are able to perform cutting operations. Simple air and fuel setups are unable to do this.