What is the biggest difference between Tig Welding Machine and Mig-Mag welding machine?

Thursday, 18/10/2018, 14:47 GMT+7

There are many important applications in the engineering and construction industry in general, electronic welding machine is divided into many types of the three main types are popular today: TIG welding machine MIG welding and MAG welding.

Depending on the purpose of the various uses, one has the right application of welding methods to serve his work. This article will help you learn as well as distinguish the three main welding methods, they have advantages and disadvantages how different?

TIG welding method

TIG welding is a process in which the source of heat is the arc formed between the non-destructive tungsten electrode with the machined part.

Arcs and metals will be protected by inert gas, possibly Argon, Helium, or a mixture of Argon gas and Helium. Filled metal is introduced into the arc as bare wire.

TIG welding machines are used to weld metals such as aluminum, aluminum alloy, magnesium, stainless steel, alloy steel, copper, cast iron ...

MIG - MAG welding method

MIG welding machine is a metal arc welding machine in the protective gas environment, the electrode is also a molten welded wire, it is automatically supplied to the welding object, the same environment as the inert gas Argon or helium. Welding is also known as welded wire, CO2 welding.

MIG welding method used to weld some high alloy steel such as Al, Ni, Cu.

Figure 1. Operating principle of MIG-MAG welding machine.

What is MAG welding?

MAG welding is also called semiautomatic welding, with the electrode melting inside the active gas shielding environment is CO2. CO2 is heated and produces CO, which is insoluble in weld metal (liquid steel), especially when it is warmed up at high temperature and moving at relatively high speed. Protection of molten solder.

MAG welding is used to weld structural steels with low and medium carbon content. In addition, with the large thickness of the structure can be mixed gas (oxygen, argon ...)

The MIG / MAG arc welding machine is set between the molten electrode, which is automatically supplied to the welding parts. This arc is protected by inert gas or reducing gas. The fire of the arc is maintained by correcting the electrical characteristics of the arc. The arc length as well as the welding current is maintained automatically, while the welding speed and electrode angle are maintained by the welders.

Why MIG welding machines use CO2 protection?

This is a question many people have not clearly distinguished the welding method, when looking at the parameters recorded on the machine will also not understand. Here we will explain the problem as follows:

MIG can still be used for MAG welding and vice versa. Modern welding machines feature an electronically controlled VA line called MIG / MAG welding, and welding machines that only record MIG or MAG welding machines have constant VA lines and are compatible with either MIG or MAG. or MAG, but does not mean incompatibility with the rest.

Therefore, the use of CO2 as the protective gas in the two cases above, the machine is still used normally and absolutely no problem at all. At this time, the machine will be called MAG welding is not called MIG welding anymore (based on the classification of gas welding method of protection).

Figure 2. MIG POWER MIG 140C Welder - Lincoln.

Advantages of MIG / MAG welding

- Low welding energy, less thermal deformation.

- solder most metals.

- Easy automation.

- Can be made long weld without interruption.

- Low cost

- High productivity

- Low welding skill required

With the knowledge above, we hope to help you distinguish and understand the common welding methods (especially MIG welding machines) and are most applied today.

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