TIG gas

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Common uses of welding gas bottles

Rent free welding gas bottles are the easy and more cost-effective way to complete your welding projects. If you currently rent a bottle, but you don't have any welding projects on your bench for a month or two, you're literally wasting money every day. Make the easy leap to buying your own bottle, because rent free welding gas bottles are the answer! Common welding gas bottles and their uses: Argon Argon is used as an inert shielding gas, protecting your weld from contamination from the air. By properly using an Argon rent free welding gas bottle, typically used for a TIG welder, you ensure that air will not come in contact with the molten weld puddle and react with the metal. Argon 5-2 Different to Argon rent free welding gas bottles, Argon 5-2 can be used when you are welding mild steel, in the form of MIG welding. Basically, Argon 5-2 rent free welding gas bottles contain a mix of Argon and also CO2 and Oxygen. Oxygen Oxygen rent free welding gas bottles are used for what is called Oxygen & LPG welding (or Oxyacetylene), otherwise known as Oxy-fuel welding. Basically, this means you are using the oxygen in your rent free welding gas bottle as the combustion method. It's also great for bending, heating, surfacing and brazing, as the welder has a lot of control over the heat. CO2 Did you know that CO2 rent free welding gas bottles are most commonly used as a reactive gas for MIG welding, and are the only ones that can be used without an inert gas? CO2 rent free welding gas bottles are also a very inexpensive shielding gas, and provide for deep weld penetrations useful for welding thick materials. Nitrogen Another inert gas, like Argon or C02, is nitrogen, which in the form of a rent free welding gas bottle means you eradicate oxygen from the welding environment and prevent oxidation. Nitrogen rent free welding gas bottles are increasingly popular [...]

What is TIG welding gas?

Tungsten inert gas (TIG) welding is a form of arc welding most commonly used to weld stainless steel, aluminium, magnesium, and copper alloys. No sparks or spatter, flux, slag, smoke or fumes are produced by the TIG welding method. Types of gas used in TIG welding The primary gas for TIG welding is argon (Ar). Often helium (He) is added to increase penetration and fluidity of the weld pool. Argon is what is called a shielding gas. It protects the welding area from oxygen and nitrogen which can cause fusion defects. It’s a colourless, odourless and non-toxic gas. The thickness of the material to be welded will determine whether other gases such as hydrogen (H), carbon dioxide (CO2), helium (He) and oxygen (O2) are needed to be mixed with the argon. These additional gases will help maintain the quality of the weld in thicker metals. The gas flow for TIG welding shouldn’t be lower than four litres per minute and can go as high as 12 litres per minute, depending on the specific task. By adjusting the composition of the welding gas, you can influence the distribution of heat to the weld and by extension, the weld metal cross section and its speed. Gas mixtures that include helium are often more expensive but result in higher quality results for thicker metal. The typical Ar/He gas mixture is 25% He to 75% Ar. Any percentage above 25% He tends to create instability at times. Be informed about TIG welding gas Before using TIG welding gas for any job, it’s important to identify the best method of welding for the material that is to be welded. This may also inform what gas mix to use. Once the appropriate method of welding has been chosen, the thickness of the material to be welded should be noted for the purposes of further determining the gas mix and the proportions of the mixture. Finally, it’s important the correct safety measures [...]