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best gas for MIG

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Welding Gas, Pure Argon v Argon Mixtures

Argon Welding Gas Argon gas is commonly used in joining metals together or welding. The purpose of including Argon is to protect and shield the welded area from air, Oxygen and moisture. When any or all of these elements get into the welded area it will oxidise and thus weaken the join. Argon is used because it is firstly inert, or non-reactive so it does not affect the welding process. Other gases that are inert, but that are not as effective as Argon include CO2 and Nitrogen. Nitrogen is reactive at higher pressures and CO2 is used in mixtures with Argon. Secondly, Argon is more commonly used today as it is cheaper than other non-reactive noble gases, such as helium. There are a few types of Argon sold for welding applications. Pure Argon is used for applications including stainless steel, Aluminium and TIG welding of plate, tubing and sheet metal. Pure Argon is also suitable for MIG welding of Aluminium. Argon 5/2 is a mixture of 93% pure Argon with 5% Carbon Dioxide and 2% Oxygen. This blend of gas is a common welding mixture in Australia for MIG welding applications. The Argon 5/2 mix has good general properties around minimising weld spatter, good flow (allowing a fluid weld pool) and helps in creating a good welded appearance on your job. This mixture works well with MIG welding for mild steel, stainless steel, low alloy steel and galvanised steel, where the thickness of the steel is up to around 8-9mm. The addition of the Oxygen and Carbon dioxide into the Argon helps to give the arc more stability, but as mentioned earlier, it also allows the The addition of the Oxygen and Carbon dioxide into the Argon helps to give the arc more stability, but as mentioned earlier, it also allows the welder's pool to be more fluid, giving a nice presentation. Over the years we have also made specific welding mixtures for customers which include [...]

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What is MIG Gas?

What is MIG and what does it mean? MIG stands for Metal Inert Gas. This is a commonly used term in the Welding industry in Australia. MIG Gas refers to a gas that is inert (inert means 'still') and when we use that word ('inert') with gas it implies that the gas is inactive or non-reactive. So that gas, such as Argon, can be used in the process and not react with the other elements. The MIG Gas is used as a shielding gas to prevent Oxygen and moisture from getting into the weld. MIG Gas Mixtures The most common MIG gas supplied in Australia is a blend of Argon, Carbon Dioxide and Oxygen and this mixtures of the gases vary. There is normally a high concentration of Argon 92-95% with the remaining gas mixture mostly carbon dioxide (3-5%), with a low percentage of Oxygen (1-3%). The MIG gas mixture we supply is 93% Argon, 5% Carbon dioxide and 2% Oxygen. MIG gas advantages Welding with MIG gas is great, because: Welding a large number of metals and thicknesses is easy The welt bead is good Weld splatter is minimised Welding with MIG gas is easy to learn and master. MIG gas disadvantages Welding with MIG gas can be limited for very thick metal MIG gas welding is less portable than arc welding The weld is slightly less controlled than TIG welding. If you have not welded previously or are getting back into the game, remember it is best to seek advice and guidance first. The key areas of interest, are what type of metal are you welding? how thick is it? what is the best Gas for this process? have I got the right equipment? and then always do a test run. Doing some research on the how to hold the welding torch, and the angle, as well as watching some Youtube videos might also be a good idea. Happy welding.

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Rent-free welding gas bottles for every occasion

Different Gases used for Welding There’s only one thing better than welding gas bottles for your DIY projects – and that’s rent-free welding gas bottle for your DIY project! Welding can seem like an intimidating process, as it involves energy powerful enough to fuse metal - and that has to be bad for the human body if used improperly. But, by taking the time to acquire the right skills and knowledge, carefully practising and using great equipment like rent-free welding gas bottles, you’ll be completing your DIY projects with ease. Rent-free welding gas bottle types When it comes to welding, you will eventually be faced with the question of what sort of rent-free welding gas bottle you will need. So let’s go through the options: Argon Argon is odourless and non-toxic and it occurs naturally in the atmosphere, but in the form of a gas bottle, it creates an inert and clean environment, free of nitrogen and oxygen. When used for metal fabrication, it is a shielding gas, and regularly blended with CO2 and or Oxygen (O2) for MIG welding – but 100% argon can also be used for TIG welding of any metal of any thickness. Oxygen Oxygen makes up 21% of the atmosphere, and is therefore crucial to all life on Earth. Also odourless like argon, oxygen gas bottles are used for oxyfuel cutting, or in small quantities can be added to shielding mixes. Oxygen can also be used for plasma cutting of steel, so an oxygen rent-free welding gas bottle is a powerful tool. CO2 CO2 is yet another odourless gas that can be packaged for a versatile rent-free welding gas bottle, and like Argon & Oxygen, it is non-flammable. In welding, its most common use is in combination with argon for shielding, although it can also be used in its purest state. Nitrogen There may be a lot of oxygen in the atmosphere – but there is much more nitrogen out there. A tasteless [...]

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