One of the most valuable resources that you must have in hand while welding is the shielding gas. Shielding gas cylinders are imperative to ensure that the welding you complete is smooth without any corrosion occurs due to oxidation. Shielding gas cylinders can be bought or hired. Industrial cylinders are expensive and often involve rental charges, usually on a subscription plan. Amateur welders usually use disposable bottles, which is more convenient for them. However, even professionals can find uses for disposable gas bottles. They are increasingly becoming more commonplace. They offer the advantages of being able to save or rental costs or delayed deliveries. They also offer portability which can be useful for welding jobs outside a workshop, such as in a construction site.
The welding gas serves several purposes in addition to creating a non-reactive bubble for the weld or the fuel source for flame based welding. Some of these applications and advantages are discussed here.
• Variety: The gas bottles usually contain the gases argon and carbon dioxide or a mixture of the two. Other popular gasses include nitrogen, acetylene, oxygen and acetylene alternatives like propylene or propane. It is difficult to acquire such variety from a single industrial cylinder vendor. Multiple vendors come with additional costs. Disposable bottles are finding increasing use in small-scale workshops as they can all be ordered easily. They are available at most welding supply stores as well as online.
• Cooling Agent: Welding generates extremely high temperatures that melt and fuses the metals together. The shielding gas cools down the welding torch and the metals much faster than it would if left to cool on their own.
• Maintains Quality: The main purpose of the shielding gas is to protect the welded area against oxidation. The point of avoiding oxidation is to ensure that the quality is top-notch! It also improves the strength of the weld. Without a shielding gas, the weld will be rough and corrode faster.
It is important to remember that disposable bottles will have lower quantities of gas than large industrial cylinders. Gasses like CO2 can be liquefied under pressure, but some gases remain in the same state inside the cylinder as well. This means that the cylinders will run out quite fast if not used with proper care. It is also important to use valves and other accessories of high quality to prevent leaks and wastage.