What is the difference between MIG welding and gas welding?
MIG welding is an arc welding process in which a constant solid wire electrode is supplied through a welding gun, joining the two base objects together. Shielding gas is also passing through the welding gun which protects the weld pool from any defect. MIG stands for metal inert gas. The technological name for MIG welding is a gas metal arc welding (or GMAW). When MIG welding, only inert gases or gas mixtures are used for the shielding gas. Mainly used inert gases for MIG welding are argon and helium. These gases are typically used for MIG welding of aluminum and more non-ferrous metals. The MIG welding process empowers the home-hobbyist, motorsports enthusiast, artist, farmer/rancher, or DIY welder to make most forms of fabrication and maintenance/repair welds on the material. Not only because of its flexibility, many people and turning to the MIG welding process because they have heard that it is an easy process to understand. They usually compare it with a glue gun as it is as easy to use as a glue gun. It is sometimes believing that many people can become skilled MIG welders only by following some basic advice.
Some of the advantages of MIG welding
• Higher welding speeds and greater deposition rates
• Not require much post welding cleaning
• No high skill required to operate MIG welding torch
• Better weld pool visibility
Some of the advantages of MIG welding
• Require higher initial setup cost
• Higher maintenance cost
• Radiation effects are more severe.
• The welding process surrounding the atmosphere has to be stable.
• Less efficient where high duty cycle requirements are necessary.
Gas welding is a welding process that melts and joins metals and different materials by heating them with a flame triggered by a reaction of fuel gas and oxygen. The most used gas welding method is Oxyacetylene welding, because of its high flame temperature. The flux can be used to deoxidize and clean the weld metal. Oxyacetylene Welding utilizes oxygen and fuel gas to heat metal till it is in a fluid state and then fuses multiple pieces of metal together. This welding technique can be used with or without a filler rod and is great for brazing dissimilar metals together. Oxyacetylene Welding is also known as “oxyacetylene welding”. It uses an oxyfuel gas flame and can be applied with or without pressure and can be applied with or without the use of filler materials. Gas welding sound weld is attained by selecting the proper size of the flame, filler material, and correct method of moving torch. The temperature produced during the process is 33000c. When the metal is fused, oxygen from the environment and the torch combines with melted metal and forms oxides, which results in the defective weld. Fluxes are added to the welded metal to eliminate oxides. Most commonly fluxes used are made of sodium, lithium, potassium, and borax. Flux can also be applied as paste, solid, liquid, powder coating, or gas.
There are some advantages of gas welding as
• It is very simple equipment which is portable and inexpensive in cost.
• Easy for maintenance and repair
Some of the disadvantages of gas welding
• Limited power density
• Very low welding speed
• High total heat input per unit length
• Large heat affected zone
• Not recommended for welding reactive metals such as titanium and zirconium.
There are several reasons that make MIG welding a superior choice for welding, one of which is that it is more diverse. While gas welding can be used on more than one type of metal but is limited in its effectiveness on thicker jobs. Whereas MIG welding can be used on stainless, aluminum, and steel, and on every thickness from 26-gauge sheet metal to heavy-duty operational plates. MIG welding takes great advantage over gas welding because the wire supply acts not only as an electrode but also as a filler which results in thicker pieces that can be welded together without having to heat them all the way around. MIG welding uses filler rather than fusing so, it can be used to weld two different materials together.
MIG welding technique is faster as compared to gas welding. A MIG welding gun is designed to run constantly for long periods of time which in turn makes them more productive and efficient than gas welding. MIG welding is good to go choice for large, industrial operations that require high production rates on the other side gas welding is a much slower process. Because the MIG welding process is so much faster so it is equally also more cost-effective. Welding parts of MIG welding are also more readily available and far less expensive as compared to gas welding.
MIG welding is easier to learn and can be easily understandable in just a few weeks of training. Sometimes MIG welding technique is also referred to as the “hot glue gun” of welding because of the easy-to-use technique – just pull the trigger to start or stop the welding process. Welding using a MIG welder is so handy that welders can hold and operate the welding gun with one hand only. On the other hand, gas welding is a specialized technique that requires the use of both hands.
Both MIG welding and Gas welding has their own set of advantages and disadvantages. In some areas, MIG can be the best welding procedure to use and in some areas gas welding So, in Accugroup you will get the service of both MIG welding as well as gas welding so that we can help our customers in whatever way we can and provide them the best result.