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Posts Tagged ‘tig’

today I am making a stand for a portable bandsaw and using tig , mig, and stick to weld it. It is a Porter Cable PortaBand

How to tig weld lap joints and outside corner joints on steel. Finishing touches on the DIY portaband stand include end caps and feet pads. That means Tig welding some outside corners and lap joints with and without filler rod.

Tig welders, one of the most efficient and useful welder in the industry saw many growths and when you consider the history of welding, this welder had played its part better than any other welding machines. Being the useful welder for the industries, it offers different features to the users and industrialist who need the help of this machine. It plays such a role and though different types of welders exist, this one has great fame in the welding industries. Its versatility, speed, operating efficiency and much more options seems to be better than its other competitors. When buying tig welders for sale, you should be aware of the general facts and news about the best welders so that you can remain happy that you bought the best one.

When buying tig welders for sale, follow some of the tips such as Determine the kinds of metal you’ll be welding with. TIG welding is used for high-quality and exact welding using metals like aluminum, magnesium alloy, steel, brass, copper and titanium. TIG welders with high amperage ranges — from four to 230 amps — can usually use a higher variety of materials. Consider a TIG welder with both AC and DC power options for the widest range of makes use of. While oxidizing soft metals like aluminum need AC current, harder metals like stainless steel use DC current. When using the low amp setting, pay attention to the arc stability so that you get better control and crater filling capabilities. Decide where you’ll primarily use the TIG welder. If space and portability are issues, select a smaller, lighter machine that you can store away when not in use or basically travel with.

Find a TIG welder with foot controls for the amperage. While some have finger controls, a foot control lets you focus your hands on the actual welding while controlling the amperage along with your foot. Match the metal type you require to weld to the tig welder’s electrical input. For example, in the event you need a welder able to welding hard metals such as steel or forged iron or bronze, an alternating current (AC) welder will work. AC welders operate using electricity that alternates direction back and forth. In the event you need to weld soft metals such as aluminum, you need a direct current (DC) welder. DC electricity creates a steady arc for the welder and comes from battery cells. Compare features. Tig welders come with a variety of features that include automatic fans and high-frequency arcs. High-frequency arc helps to keep the welder’s electrical current steady that provides a precision weld. Select a welder with as lots of features as you can afford.

Compare duty cycles. A welder’s duty cycle indicates how long the welder can operate in the work of a 10-minute interval without overheating. For example, a tig welder that can weld for weld minutes but needs six minutes downtime to cold off has an obligation cycle of 30 percent. Duty cycles range from 15 percent to 60 percent. Also, compare the warranties so that you can buy the better one.

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Tig welding techniques for lap joints and for butt joints are not that much different.
When you are Tig welding hot rolled carbon steel, you really need to grind the mill scale off to make it weld clean. Tig welding cold rolled is easier because it does not need to be cleaned.

Tig welding overhead is mostly a matter of getting comfortable. A few dry runs and trying different ways of holding the torch and you can settle on a technique that works for you.
Enough amperage. (125 in this vid) Sharp tungsten, good torch angle (about what is shown in the video) and a tight arc …these are the best tips for overhead TIG welding

Walking the cup technique for tig welding works good on pipe but not much else.
For welding aluminum, or thin sheet metal of any type, walking the cup is not the best technique.

Wanna learn how to TIG weld aluminum?

First you need a decent TIG welding machine. Not a great one, just a decent one. Already got one? You might have an old Synrowave 300 or a DialArc, an old Hobart CyberTIG or you might have a brand new Miller Dynasty 200DX.

Know what? It doesn’t really matter. The same principles apply. If you have an old as dirt TIG welding machine, you can still make good aluminum TIG welds. Weld beads that look like a stack of dimes.

First lets look at machine settings:

Set the polarity to A/c (alternating currrent)

- Make sure to set the high frequency to continuous

- Set the amperage to about one and one half amps per one thousandths of inch of thickness (up to about 250 amps then things change quite a bit)

- Set both the contactor and amperage switches to the remote positon

- Set the argon or argon/helium torch shielding gas to around 15 cfh. (if you are using a #7 cup) less if the cup is smaller

- Notice I said argon or argon/helium? Argon is not the only game in town. In fact, if you TIG weld any aluminum over about .063″ thick, adding helium to the mix makes a huge difference.

Now lets talk tungsten electrodes:

- 2% thoriated have received a lot of bad press for the radioactivity issue but they do work

- 2% lanthanated electrodes are a really good all purpose electrode…good for TIG welding aluminum as well as steel

- Use the smallest electrode that will get the job done without quivering at max amperage.

Remote amperage control…you need a foot pedal. Period.

- Once all the settings are ok, and assuming you are welding on 1/8″ thick aluminum, grab a piece of 4043 filler rod in 3/32 diameter (rarely will you use a rod as thick or thicker than the metal you are welding)

- Extend the electrode tip about 1/4″ past the tip of the TIG welding torch cup and pre purge the gas by tapping the foot pedal.

- Hold the torch like a big first grade pencil. Touch the tip of the tungsten to the metal and then pull it back about 1/8 inch. Flip your helmet down and press the pedal to initiate the arc.

- Don’t melt the aluminum right away though, watch the black stuff cook away from the arcs cleaning action before you melt the metal. Then press the pedal far enough to create a puddle that is about 3-4 times the thickness of the metal you are welding.

Now comes the part on how to achieve the “stack of dimes” look. You get that by adding the same amount of rod and by moving the torch the same distance each time you add rod. Add rod, Step ahead 1/8 inch,Add rod, Step ahead 1/8 inch,Add rod, Step ahead 1/8 inch, lather rinse repeat. If you do this consistently, you will get evenly spaced ripples that look like a stack of dimes.

Of course it looks different from underneath the welding helmet and it is harder than it sounds, but this is really how you do it. All that is left is the doing. It takes practice and lots of quality seat time.

Moreover we will see now the various types of welding machine and its types in brief. Firstly, we will discuss about plasma cutters. This process is also known as child of modern invention, this process also uses science in there process.

It also uses the plasma gas and perform multi task of cutting and welding. Totally in market there are nine plasma cutters and five of them are listed as super cut fifty super cut sixty, super cut forty, super cut fifty, power plasma 50 power plasma sixty and power plasma 70 and also power plasma 100, power plasma 80, plasma machines is also available for processing.

Five types of the TIG welders are power I TIG -200 power TIG 200 DX, power TIG 250 EX power TIG EX power TIG 225 LX power TIG 315 DX.

TIG welders are of five types which is easily available. They are power I TIG -200 power TIG 200 DX,  power TIG 250 EX  power TIG EX  power TIG 225 LX  power  TIG 315 DX . The starting minimum voltage required to start the unit is 220/240v it can also afford consistence and stable parameters with the standard feature being with foot pedal control.

There are machines which comes with the advantage and special features like arc force control, spool gun capability, digital display, consumer low power and many more which is specially designed so that these machine can be used in all industrial purposes and serve all industrial process, such machines are easily available and are called  MIG machines.

They are namely I MIG 205, I MIG 160, I MIG 250, and I MIG 200. They are different types of MIG machines available for various uses. The power arc welder is also known or commonly known as stick welders. They are two types of stick welding machines available they are power arc 200 and power arc 160. These machines give good competition and lead the industry with their performance and the price too. It also gives the benefit of excellent arc characteristic.

So when talking about welding process, the welders have various options in different type of welding machine and the welder or the user can weld ant type of metal easily and can be satisfied with a smooth welding characteristic with a high duty cycles. Enjoying the benefits of the machine can be fullest only if u select a machine which is best suits your work.

Welding is a not like other jobs and it is called as a skilled art and it needs lots of practice and patience. We all know that tungsten inert gas welding is used for complex and stylish process and the welding machine used for this purpose is called as tig welder and in this article, let us deal with various tips on tig welding and tig welders. Using tig welding machine is not so easy and pick up the electrode for the mission you start. Crush the electrode to a position and aim for a sharp tip so that it becomes more rounded as you weld. Put the electrode into an electrode holder that has the tip about 1/4-inch away from the cover and go for the settings on your tig welding machine. AC, DCEP and DCEN are the three important ones and prefer AC for aluminum.

Position the air on to five seconds and turn the max amps to 250. Also turn on the gas and different gases are used for different metals, for example, use pure argon for aluminum and use argon and carbon dioxide mix for steel. Brush your welding table or level piece of sheet metal with a wire brush so that it will be clean and flat. Welding Gears are essential during welding and the welding safety gear includes goggles, apron, hood and gloves. Make sure that you have all these welding gears so that you can weld safely and as said above, a clean place is essential so that you can work in a safe environment. Holding the electrode is considered while doing the tig welding. Grasp your welding electrode in your hand that is dominant and start your welding project. Ensure that every setting is proper and make sure that they are not changed or wrongly adjusted.

Choose tig welders count while doing tig welding because only a proper welding tool can improve the performance of welding process. Counterpart the metal type you want to weld and for case, if you require a welder that are proficient to weld hard metals like steel, cast iron or bronze, then only an alternating current (AC) welder can work well. AC welders operate using electricity that “alternates” direction back and forth. For soft materials, DC welder is strong enough to weld and it creates a stable arc for welding. Make your mind up on how thick of metal you are going to weld and based on the thickness, select high amperage or low amperage welder.

Duty cycles comparison is essential while buying welding machines and compare the duty cycles and it is a term that indicates how long the welder can operate. Select a tig welder that you’re your budget and in general it costs from Make certain the tig welder fits your budget. 0 to ,500, and the rates vary depends upon the power and company. While buying it, compare the features and warranties so that you can be able to get the best welding machines in an affordable price.

TIG welding is considered as the most  flexible process of welding as it can easily be merged with all the conventional metals such as Carbon and low alloy steels, stainless steel, nickel alloys, aluminum, magnesium, titanium, cobalt, and copper alloys. TIG welders also known as the Tungsten Inert Gas Welders makes use of an arc which is been created from the non-consumable tungsten. The heat is generated through electric current for the welding process.

Moreover, this kind of welding has several benefits like the high amperage in it allows the welding of metals with great thickness; also it include the concerns related to the purity of metal and its cleaning. In addition, welding is known as a skilled technique that requires lot of practice, patience and safety gear. TIG welder is one specific kind of welder. TIG welder is mainly used for complex and stylistic welding. Described below is certain tips that you need to consider while using TIG welders.

Instructions

1. Make sure to pick the better electrode in order to use for the project you are starting with; also you can make use of variety of alloys such as the 6061 Aluminum alloy electrode.
2. You need to grate the electrode to a certain point. Try to create a tip and sharpen it to make it more rounded as you weld.
3. Place the electrode into an electrode holder with the tip about 1/4-inch away from the case. You can choose the settings on your TIG welder. In fact, the three major ones are AC, DCEP and DCEN. You can choose AC for aluminum.
4. Remember to set the air on for five seconds with the max amps to 250. Also, turn on the gas. While using aluminum, you can use pure argon. For steel, an argon and carbon dioxide mix.
5. Scrub your welding table or the flat piece of sheet metal with a wire brush in order to make it clean and flat.
6. You can gear up the full welding safety gear including glasses, apron, helmets and gloves.
7. Always, hold the electrode in your dominant hand and you can start up your welding project.
8. You need to check your settings frequently to make sure they have not changed and you can adjust them as required.

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