These ownership CO2 cylinders hold 5.0kg’s of CO2 which provides approximately 10 hours of MIG welding time based on a gas flow of 8/10 L/minute.There are outlets in most New Zealand towns or cities that will fill these for you. Is CO2 suitable for your application?The primary purpose of shielding gas is to prevent exposure of the molten weld pool to oxygen, nitrogen and hydrogen contained in the air atmosphere. The reaction of these elements with the weld pool can create a variety of problems, including porosity (holes within the weld bead) and excessive spatter.Different shielding gases also play an important role in determining weld penetration profiles, arc stability, mechanical properties of the finished weld, the transfer process you use and more.Carbon Dioxide (CO2) is the most common of the reactive gases used in MIG welding and the only one that can be used in its pure form without the addition of an inert gas. CO2 is also the least expensive, making an attractive choice when reducing material and operating costs are a priority.CO2 provides a slightly narrower bead and deeper weld penetration than CO2/Argon Mix (which is a mixture of CO2/Argon) CO2 is better for dirty, coated or rusty materials. PLEASE NOTE: This product is classed as a DG (Dangerous Good), therefore delivery may take an extra 1-2 days
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