Arc welder and its significance

Arc welding is commonly used because of the low cost and is normally the first type of

welding apprentices learn. Arc welding uses an electrical current between an electrode

and the welding material to melt the metal and create the weld. The area being welded is

sometimes protected by semi-inert gas or filler material. Arc welding is a simple welding

method that can be used by almost any weldor, and it can be used on nearly any type of

metal. There are more technologically advanced methods of welding, but arc welding is

easiest and to perform arc welding, arc welder is used.

Welding equipment that performs this type of welding is called as arc welders. Arc

welders are machines that create an electrical current in the shape of an arc. This current

can reach thousands of degrees in temperature, and it melts any type of metal. While arc

welding may not be as common now as it used to be due to new forms of welding, it has

a variety of uses and Arc welders used to be expensive tools that were available only to

large companies or top tradesmen. Over the years, however, arc welders have become

much more affordable. Smaller tradesmen and hobbyists can now enjoy the convenience

of having their own arc welder. Whether you want to fix metal items around the house or

restore a classic car, an arc welder can make the job easier.

Choose a gas-metal arc welder if you plan to use your arc welder for indoor projects and

choose a flux-core arc welder, if you plan to use a welder for outdoor projects. Make sure

the arc welder you choose has a trigger mechanism. An arc welder without a trigger

mechanism has a constant live torch, which can be dangerous, especially when working

indoors. Consider the amount of amperage you need your arc welder to have. This

depends on the metal you're working with. Generally speaking, for a 2 mm piece of steel,

you will need a 90-amp arc welder. For a 5 mm piece of steel, you will need a 180-amp

welder, and for thinner metals, you will need about a 25-amp welder.

It’s very important that you should know how to weld using arc welder. When you weld,

your practice area should be outdoors without any flammable materials nearby. Secure

the practice steel to a work platform, attach the ground to the steel and place the welding

rod in the other clamp. Put on your protective equipment, especially the helmet. Looking

at the arc unprotected can instantly cause permanent eye damage. Turn the welder on and

set it to about 80 amps and touch the electrode to the steel and pull it back slightly. Break

it loose and try again if it sticks. Increase the amperage if it continues to stick and feed

the electrode into the arc to maintain it.

Once you become proficient to know how to weld at this, you may advance to welding

two pieces of metal together. Look for an arc welder at a store approved by the

American Welding Society. Search in the internet search engines and you will be

provided with a list of welding stores that sell each type of arc welder.

SOURCE: http://www.everlastwelders.ca/