Spot welding is a great form of resistance welding, which is a technique of welding two or more metal sheets jointly without by means of any filler material by pertaining pressure and heat to the area to be welded.
Spot welding is one such technique that is usually used to bond metals shaped into sheets that is not thicker than 3 millimeters. Just like any other welding technique even spot welding can produce clear-cut bonds without making excessive heating that can have an effect on the properties of the leftover sheets. This is pulled off by setting free a huge amount of energy in a short time in order to produce restricted and consistent welds. When it comes to galvanized steel then higher levels of current is required.
Tungsten inert gas (tig) is often used for high-quality precision welding purposes. In this particular process an arc is formed between the metal and the permanent non-melting tungsten electrode. With the help of the torch the gas is fed, thereby it shields the electrode and molten weld pool. In case of usage of filler material, they are added discretely to the weld pool.
There are several benefits of tig welding and it takes into consideration finer quality welds, clear-cut control of welding variables such as heat, independence of spatters and low warp. Moreover, it can be used at lower amperages for thinner metals and they can be used on exotic metals.
It can be used on different types of metals, but most commonly aluminum is used in particular metals of a smaller thickness.
Almost all types of metals can be tig welded but the most recurrent metal that is associated with this type of welding process is the aluminum, predominantly smaller thickness metals. Even though there are several other set of processes that allows joining aluminum, tig is one such process that is most applicable in the case of lighter gauges.
On the whole, as a rule, the gas tungsten arc welding process is best for repairing aluminum.
What Does one Learn in a Program? In the welding training course, you learn widely used techniques like ARC welding, MIG welding and TIG welding. You would also learn to use a number of industry standard machines, such as Utility Arc Welders, Automatic Tube Bevels, Gas Tungsten Arc Welders, Flux Center Arc Welders and Hand-Operated Grinders. Welding schools and other vocational schools also teach you important job searching skills like interviewing and resume writing. After all, your newly acquired skills aren’t as useful to you if you have no idea what you need to do in order to market them. Where Should i Go for Welding Exercising? A superb welding curriculum at a welding school is dependent on American Society of Foot orthotics Engineers (ASME) together with American Welding Society (AWS) specifications. These are the standards with which the industry sets their educational goals. .TIG welding is some sort of welding procedure that brings into play non-consumable inert air and tungsten electrode. The inert gas is utilized as a screen to avoid atmospheric pollution in the course of this kind of welding. The real welding takes place as a result of extremely ionized gas recognized as plasma and metal vapors. On account of energy produced from a constant current power supply in such a method of welding, plasma is actually formed. Undoubtedly, TIG welding is just about the most complicated abilities to become skilled at. This version of welding needs outstanding give and eye synchronization. Additionally, you need high-quality sense of balance with the aptitude to make use of both of your hands simultaneously. Confident experienced Tig Welding recognizes that this TIG weld excellence is very reliant on keeping the standard and shape of your tungsten tip. Weld set up data is significant using automatic TIG welding software programs. Tungsten life is enhanced which includes a start rise up with a low current start point then rise to the operating current. Expert TIG welders have their own share of secrets on why they succeed in this kind of critical industry. They are acquainted with everything about TIG because they have learned to solve and balance issues, keep their hands fixed, and produce a dreadfully absolutely consistent weld. TIG system leans the torch relating to the weld joint. The moment the cup is bending relating to the weld joint, the operator begins the arc. Next, the torch knob is twisted from side to side like a ratchet turning a bolt. The instant metal starts; the filler wire is either walked over or dipped. Several of advantages to using this “walking the cup” system for anybody who is interested in this types of welding. The main advantage can be a consistent outline that brings about dependable weld diffusion. By way of the time a welder is taught of this method, their welds will be constantly very similar. There’s less space for standard hand shaking and slips. One more advantage could be the control of the arc length. Arc length is a huge topic in regards to welding generally. The majority of weld imperfections that are caused by inappropriate TIG weld procedure are linked to arc length. If you mastered “walking the cup”, your arc length ought to be tremendously short and well-performing always. Tig welding machines
It is like a rising superstar in this day in which we live. The art of TIG welding has been around for some time but is becoming an ever popular application for welding.
It is drawing upon the curious side of someone already interested in the field of welding.
TIG welding is a very unique form of welding. When you begin to use the left and right hand simultaneously in any process there is more stress involved to the welder and this technique requires more agility than does the more common practices of welding.
When you embark upon a career in TIG welding there are normally pre-requisites that have already been achieved by the time you arrive in the TIG domain.
Stick welding is normally a foundation before a welder steps into the world of TIG. Rarely does the TIG process stand alone. There are places that you find the MIG and TIG process alone but those areas do not entail the vast majority.
Some places you may see just the TIG would be the Aero-Space Industry, lightweight bicycles, hospital equipment, dairy production, etc. For the most part, the TIG process will find you in the Petro-Chemical Industry, Chemical Refining, and the Fossil Fuel Industry.
Power plants, refineries, chemical plants and the likes is actually the place that the biggest money is made as well as the pipeline; which used to be downhill stick only and reserved for the welder with the big head and the rig truck he worshipped as a god.
Things have come a long was needless to say.
The welder in general used to have an upper-hand in his craft but not so any more. Most people in these industries look at the welder in general as a cry baby and whiner who is always looking for the ideal conditions in which to perform his operation.
But! The TIG welder is someone that is still in high demand and carries some prestige connected to his ability to be ambidextrous.
The TIG hand can weld stick, MIG, TIG usually whether it is carbon or alloy metals.
The further the welder can move into the realm of the exotic, the more in demand he becomes. The more certifications he can obtain, the more in need he will find himself (or herself).
The bad part about the area of TIG welding that we are talking about at this stage is the different environments that go with this type of welding.
The already mentioned places that usually call for this type of welding are not the most pleasant places to work. These type of environments eventually take a toll upon the body of the individual.
It is not easy to sustain good optimal health in fume and particulate saturated environments. Toxins and poisons are present. Elevated structures with scaffolding enclosed by fire retardant blanket. Noise levels that can and most of the time due require hearing protection.
Come to think about it, the bike factory is becoming more appealing all the the time. LOL!
Actually, a good TIG hand that is respected in his trade can call the shots. He sizes up the fit on pipe and if it isn’t correct he shoots it down, because once he starts welding on it he has taken the responsibility in saying I can make it happen.
A good TIG welder can make a bad fitter look good. Or take a bad fit and turn the fabricators heartburn into Rolaids to the rescue.
An older man that has become well versed in his trade is widely respected by his peers when he becomes known as the TIG daddy, the man, the khaki daddy, etc. There are up and coming young men that are always following in the footsteps of the well accomplished mentor TIG welder.
TIG comes with a few essential items that must be recognized. Clean clothes every morning with starched shirts and a nice skull cap. A bandanna in the back pocket. A bandanna around the neck like a businessman would wear a tie to the office. Fairly new looking gloves that are not your run of the mill leather. TIG welding requires sensitivity in the fingertips and hands.
Most of the time a good TIG hand has cash in his wallet and is on top of his game. The problem we see with that in our economy is that he has to travel a bit more than he would like to keep that going.
The benefit of that is that he will always have a job because of his skills. You see the TIG welder is selling his skill. He doesn’t produce a product so to speak. His arsenal of tools contain his favorite hood or two, small hand tools that are used to accent his skill. Sharp tungsten stored in his tool bag or bucket. Files, die grinders, small wrenches, flapper wheels, emory cloth, filler rod, a coffee thermos (very important), extra gloves and lenses if needed, and possibly some small fit up wedges or flat head screwdrivers.
In our next article we will look at the actual components of his equipment for a further breakdown in lesson TIG 102. Until then, thanks for your time and take care!
About the Author
Michael Treadway has welded for 25 years and has learned a few things about welding and fabrication. He has a welding home study course and writes books on welding. Stop by his website today to get a copy of his latest book just for visiting and sign up for his course at .
LONGEVITY MIGWELD 140 AMP 110v FLUX Core / Gas MIG WELDER with optional Aluminum SPOOL GUN $329.99
Welders Buying Guide – To TIG Or MIG, That Is The Question by Bob Shanty
Welding is a friction process used to join metals or thermoplastics by melting and fusing them together. A filler, usually a molten metal or plastic, is used in welding to hold the work pieces together. Welding can be carried out using different energy sources, including a gas flame, an electric arc, a laser, an electron beam, friction and ultrasound. The source used for welding depends on the work place, but this buying guide on welding supplies can help get you started!
What are the different types of welding, welders and welder equipment available in the market?
Shielded Metal Arc Welding:
Shielded metal arc welding (SMAW) is popularly known as manual metal arc (MMA) welding or stick welding. It uses a consumable electrode coated in flux to lay the weld. An electric arc between the electrode and metals to be joined is formed through an electric current produced by a welding power supply. As the weld is laid, the flux coating of the electrode disintegrates and vaporizes. This results in a shielding gas that provides a layer of slag. The shielding gas and the slag protect the weld area from atmospheric impurities. The shielded metal arc welders can be efficiently used outdoors with its enhanced shielding gas protection. SMAW welders usually consist of a welding power supply that offers continuous current, an electrode, an electrode holder and a work clamp. They also include welding cables to connect the power supply unit and electrode. It is recommended to use these welders for welding steel, stainless steel and cast iron.
Gas Metal Arc Welding:
Gas metal arc welding (GMAW) is also referred to as metal inert gas (MIG) welding or metal active gas (MAG) welding. This semi-automatic or automatic arc welding process uses a consumable wire electrode and a shielding gas fed through a welding gun to join two metals. The GMAW process requires constant voltage and a direct current power source. It is the widely preferred industrial welding process. The automobile industry in particular uses GMAW welders almost exclusively. MIG welders are rarely used outdoors or in other areas of air volatility. These welders can be used to weld steel, stainless steel, aluminum and cast iron.
Flux-Cored Arc Welding Gasless:
Wire-fed welding machines are used for the flux-cored arc welding (FCAW) process. Metals are heated, melted and then joined with continuously-fed consumable tubular electrode wire and work pieces. Constant voltage or a constant electric current welding power supply is required for FCAW. The externally supplied shielding gas depends on the flux core wire used. In general, the flux itself is relied upon to generate the necessary protection from the atmosphere. Since it offers high speed welding and portability, the FCAW process is preferred in construction. This process is great for welding oxidized materials and thick sections. However, it cannot be used in automotive body work, as the filler material is costly. The FCAW welders work well on rusty metals and are recommended for steel and stainless steel materials.
Gas Tungsten Arc Welding (GTAW):
This welding process is also termed tungsten inert gas (TIG) welding. It uses inert or argon gas for shielding purposes. GTAW is a manual welding process that requires a non-consumable tungsten electrode and an, individual filler material. A stable arc is created between the electrode wire and the work piece. It offers high-quality welding. It is perfect for welding thin metals but works at relatively low speeds. Special operating skills are needed to operate TIG welders and these welders can be primarily used to weld aluminum, magnesium alloys (DC TIG), steel, stainless steel, copper, brass, and titanium. Resistance Spot Welding (RSW):
Resistance welding is an effective means of welding and creates less pollution. Spot welding is a widely used resistance welding method. Spot welding is mainly used in overlapping metals of about 3 mm thick. No arc is used in this process. It also does not require filler material. The process involves limited work piece distortion, a high production rate, simple automation and efficient energy consumption. Since the welding strength is low, RSW welders are used only for certain applications. RSW welders work well on steel and stainless steel work pieces.
Why do you need a welder?
Before buying a welder, decide what applications you need it for. You might be using welders in different areas like construction, farm/ranch maintenance, DIY, general home repair, or auto body work. Built-in features of a welder determine the applications it can handle.
What is the power input needed for a welder?
For homes and offices, a single phase input power is sufficient. The greater the thickness of the metal to be welded, the more amps required. For applications where you cannot access an electrical hook-up, you can use engine driven welding generators. These generators are powered by gas and can be slightly expensive.
Are welders portable?
There are some portable welders available in the market. These welders usually weigh around 30 kg or less. These portable welders can be moved to your work place with the help of few wheeled accessories.
What are the tools and accessories that you need for a welder?
Torch:
Welders usually come with an in-built torch. But you can purchase a euro torch separately at a relatively cheap price. It usually lasts longer and costs less than the built-in torch that comes with most welders.
Gas Regulator:
You have two choices for a gas regulator. A single gauge gas regulator calculates the pressure in the bottle. On the other hand, a twin gauge measures the flow rate of the gas along with the pressure. The twin gauge gas regulator is more expensive than the single gauge one.
What kind of safety equipment is required along with the welders?
Welding Gauntlet:
A welding gauntlet is a thick, heat resistant glove that is necessary during any welding process. Buy a pair of welding gauntlets to protect your hands from exposure to hot metals or the strong UV light.
Welding Helmet:
Use this headgear to protect the eyes, face and neck from flash burn, ultraviolet light, sparks and heat especially during arc welding processes. Use lightweight helmet to prevent strain on the neck.
Goggles:
Use goggles to safeguard your eyes. They prevent inflammation of the cornea due to exposure to the brightness of the weld area.
Welding equipment curtains:
The people who stand near the weld area can be shielded from the UV light and other hazards with the translucent welding curtains. These curtains are made up of a polyvinyl chloride plastic film for protection.
About the Author
Bob Shanty has been researching and writing articles that help shoppers find online shopping bargains and make more educated buying decisions on welding equipment for online mega store BIGshop for years. For more articles by Bob please visit .