Types of Welding Processes

Types of Welding Processes :- Welding is an fabrication process where nearby two or three parts are fused together by means of heat, pressure, or both forming a joins as the parts cool. Welding is usually performed on metal & thermoplastic but they can also be used on to the wood.

Types of Welding Processes

1. FCAW Welding (Flux Cored Arc Welding)

2. TIG/GTAW Welding (Tungsten Inert Gas/Gas Tungsten Arc Welding)

3. MIG/GMAW Welding (Metal Inert Gas/Gas Metal Arc Welding)

4. SMAW Welding (Shielded Metal Arc Welding)

5. LBW Welding(Laser Beam Welding )

1.FCAW Welding: ( Types of Welding Processes )

FCAW is more economical alternative than the comparison with Shielded metal arc welding (SMAW). This is a continuous wire process & good quite effective deposition rates can be achieved with respect to high duty cycle. FCAW produces coalescence of metal by heating them with arc b/w a continuous supplied consumable & base metal work piece. Shield is powered by flux within the electrode. In addition of flux, central core of the flux of the electrodes may contains deoxidizers & slag  formers.

Principle

FCAW is an alternating to the MIG & MMA welding. The wire consist of hollow tube which is filled with flux & metal powder. In gas shielded FCA welding a gas shield of an Co2 or argon- Co2 gas mixture is used as the same manner in slid wire in MIG welding.

Application of FCAW Welding

These types of welding are used for application similar to manual metal are MIG / MMA welding the process can be mechanized. Mechanical properties attainable to with self shielded cored wires is more limited with maximum weld metal strength of 700 N/ mm2.

2. TIG/GTAW Welding: ( Types of Welding Processes )

TIG welding is process in which that is similar to the braze welding with an oxy- fuel gas torch. This process uses a small puddle & heat affected zones. No spatter is created since metal is not transferred through the arc

TIG welding is used for thin exotic (strange) metal & pipeline welding. It is not often used for size grater than ¼ inch (except for material ALUMINIUM & MAGNESIUM). Before welding to be perform oil, grease other impurities from the surface to be removed. This may be achieved by the mechanical means or vapor & liquid cleaners.

3. MIG/GMAW Welding: ( Types of Welding Processes )

This types of welding involves combing of  two pieces of metal together with a wore which is connection with electrode current this referred to as MIG welding. MIG welding process in which a shielded gas is used along the wire electrode for heating up the metal to be joined. A constant supply of power (electrical source) is mandatory for this system. MIG welding is most commonly used in industrial welding process. MIG or GMAW is suitable for materials fusing mild steel, stainless steel as well as aluminum.

4. SMAW Welding Processes: ( Types of Welding Processes )

Arc welding is a type of process in  which electric arc to create heat to melt or join metal. Power supply is must for performing this type of welding operation that create an arc b/w a consumable or non – consumable electrode.

Working

Arc welding is used is fusion welding used to join metal. Electric arc is provided through an A.C or D.C supply that formed high heat on surface of 6500 deg farenheight which melts the metal at the b/w two work pieces. The arc can be manually or mechanically guided along the line to join, while electrode carries the current & conduct the currents & melts into the weld pool at the same time to supply filler metal to them.

5.LBW Welding Process:（Types of Welding Process）

It is a non-contact process that requires access to the weld zone from one side of the parts being welded.

The heat created by the laser melts the material on both sides of the joint, and as the molten material mixes and resolidifies, it fuses the parts.

The weld is formed as the intense laser light rapidly heats the material – typically calculated in milliseconds.

The laser beam is a coherent (single-phase) light of a single wavelength (monochromatic). The laser beam has low beam divergence and high energy content that will create heat when it strikes a surface

The laser applies the needed energy fast. Depending on your laser and workpieces, you may need to shoot the beam at the metal in pulses that last for only a few milliseconds. Or, a continuous beam may be best. It depends on how much power is needed, and you do have a fair amount of control over how the LBW setup applies heat to the parts.