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Welcome to weldingbiz. This site is to provide welding information for both those who wish to learn welding , and also welders who wish to move to another level in welding, perhaps to advance in your career or even start a business. For instant welding information check out the welders learn How to Weld Manual page.

We also provide welding tips and links to welding equipment for all levels.

What Are The types Of Welding

Metals have different characteristics that affect their ability to be welded or cut. The welding process involves melting the base metal parts and adding filler metal that has the same melting temperature and characteristics of the parent metal.

Metals are divided into two categories, ferrous and non ferrous. Ferrous metals contain iron such as cast iron, mild steel, forged steel, and stainless steel., where as aluminium is a non- ferrous metal. Each metal type requires different welding procedures and filler metals.

These are the four major Welding Types processes that are used both in industry and for the home hobbyist.

Gas metal Arc Welding.(GMAW)

Also referred to as MIG or metal inert gas welding. The most versatile and most used of all welding processes. Uses a continuous wire feed electrode fed through a welding gun along with a continuos flow of shielding gas.

The advantages of a mig welder are many, the gun is easy to manipulate and keep at a uniform distance from the weld, continuos wire feed allows longer welds to be run, the welds remain smooth and clean because of the shielding gas. You can weld at very low temperatures allowing welding of 22 and 24 gauge sheet metals.

Disadvantages are outdoor welding situations where the shielding gas can be blown away in a breeze and in tight situations where the gun nozzle limits welding. Mig welding is deal for welding mild steel, stainless steel and aluminium.

Mig welding is one of the easier processes to learn how to weld

Gas Tungsten Arc Welding (GTAW)

Also referred to as TIG or tungsten inert gas welding Tig welding is a process that generates an arc between a non consumable electrode and the work. The electrode and the weld are protected by a gas shield, and a filler rod may or may not be used.

Tig welding is similar to gas welding and requires more skill. Used for doing fine work and where a high standard of finish is required without the need for grinding, such as bicycle frames and food manufacturing equipment.. As Tig welding is a very clean process its ideal for welding stainless steel and aluminium. For a more advanced version of the tig welding process see precision plasma welder.

 Shielded Metal Arc Welding (SMAW)

Mostly referred to as stick or arc welding. How to arc weld involves heating the base metal to fusion by an electric arc using a welding electrode. The covering on the electrode provides both a flux and shielding gas for the weld.. Electrodes range in thickness from 2 mm for light work and up to 5 mm for heavy steel.

Stick welding is used for fabrication, construction and repair work, more suited to metal thickness 4 mm and upwards. Thinner metals and aluminium are more suited to the GMAW process. See; how to weld aluminium.

 Oxyacetylene Welding or Gas Welding.

Learning how to oxyacetylene weld is a relitavely easy process to master and uses a gas flame to melt base metals and fuses them together. The gas flame is created by the combustion of oxygen and a fuel gas such as acetylene, propane, butane or natural gas. The hottest of any gas flame is capable of melting most metals.

Gas welding today is generally restricted to welding thin sheet metals (see also; how to spot weld) and brazing of mild steel, and copper pipe work. , Braze welding is used for joining dissimilar metals and metals of different thickness and often used to repair cracked or broken cast iron.


Other welding topics covered on this site include Plastic welding . We also have resources for welding equipment and supplies including welders and auto darkening Welding helmets.

 With the relative scarcity of trained welders in many regions of the country welding can be a rewarding and exciting career. Personnel are  sought after in felids in civil construction, machinery, ship building, agriculture, food processing, automotive, furniture, technology and many more, so get out there and learn how to weld.

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