Tig welding- the operator control process

Introduction:

Tig welding is an arc welding process, which uses non consumable tungsten electrode to

produce the weld. This welding process enhances the operator a great control over other

welding procedures. It is used to weld steel and non ferrous metals and it is more

specifically known as Gas Tungsten Arc Welding, or GTAW. TIG welding is performed

using welder equipment known as tig welders. The tig welders use an electrical arc that

connects the electrode to the metal being welded when the two are held close together.

The heat from the electrical current melts the metal where the connection occurs.

The gases used in tig welding:

Inert gases are used in tig welding to prevent the tungsten electrode from contamination.

The inert gases used in TIG welding most often were helium, but today combination of

argon, helium, and hydrogen are used. All inert gases are non reactive and that will not

catch fire or react to the intense welding. Helium helps to generate more heat, but argon

is an excellent shielding gas, and hydrogen can create cleaner welds. The main purpose of

the gas is to protect the weld from exposure to air. Oxygen, water vapor, and particles in

the air can ruin a weld before it cools, but the gas protects the weld and combines with

the metal to form a stronger bond. TIG welding produces welds of up to 35,000 degrees

Fahrenheit. Tig welding is done with a torch that holds the tungsten electrode when the

current flows through.

The role of tig welder:

TIG welding is used for items that need a clean finish, such as bicycle frames, cookware

and manufacturing equipment. Aerospace industry is one of the primary users of tig

welding. The tig welding process becomes unreliable without tig welders and this welder

machine has high duty cycle and easily handles tough jobs that would push a competitor's

welder past its thermal limits. They offer easy to adjust settings without complicated

hidden menus and difficult to access features found in many inverter welders. Easy

starting, exceptional stability and control of the welding arc are well-known features of

the entire Power Tig welder machines.

Varieties of tig welder products:

The weldor cannot perform well if he doesn’t have a proper tig welder and for the benefit

of weldors and welding industries, there are varieties of tig welder products available in

the market. A good tig welder must be able to work well on both metals and non ferrous

metals with ease. Read all manufacturers instructions prior to operating the tool, this will

ensure maximum success by informing the user about the proper type of preparation of

the body panel needed for a successful application. Before, portable welders were

possible only in mig configuration whereas today, tig welder products come in a portable

form with light weight and compact in nature, as well as easy to take into the field to

perform repairs. The varieties available in tig welder products are, Power I-Tig 200,

Power Tig 200 DX, Power Tig 225 LX, Power Tig 250EX and Power Tig 315DX.

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