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November 2016

Argon gas prices in Australia | Cost of Bottle Ownership

Categories: Argon gas cylinders, Welding Gas|Tags: , , , , , , , |

Welding Gas Prices Below are Argon gas price, Oxygen and Argon 5/2 prices. The Argon gas price includes delivery to you. Our Mig gas, which is also called ‘Argon 5/2’ is a mixture of Carbon Dioxide (5%) and Oxygen (2%) in Argon (93%) and we can make up varying mixtures Argon, with CO2 and Oxygen in the same bottle. Mixtures of Argon with helium are also manufactured. Our bottles comply with Australian standards and that means that your existing regulator will fit straight on to the cylinder. All bottles are Speedgas branded and they are full of gas, and our argon gas prices include delivery & GST. Argon gas price and bottle sizes: C Size: New $220 & Refill $75 D Size: New $360 & Refill $110 E Size: New $460 & Refill $160 G Size: New $560 & Refill $180 Delivery is within 30km of CBD in Sydney, Melbourne, Brisbane & Adelaide. The no rental gas model allows a customer to own an argon gas bottle (cylinder), to avoid the daily and yearly cost of rental. The first cost is higher, as it includes the cost of the cylinder, and then the only ongoing cost is the refill or swap-over cost. The system works in a similar fashion to “swap & Go” with LPG cylinders except that we deliver to you, whether at home or at work. This is an alternative to paying rental on gas bottles for welding gas and the prices are provided so you can do a comparison to see if it works for you. In the comparison make sure you include delivery, rental, handling and all costs.

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Rent free argon – What can argon be used for?

Categories: Argon Gas, ARGON GAS CYLINDER|Tags: , , |

Put simply, rent free argon is what we deliver for you to keep. Because our rent free argon is yours once we’ve delivered it, you never need to pay rent on that cylinder, so you can put it away and use it whenever you need it. What is argon? Argon is known as one of the ‘noble gases’. What does that mean? Basically, it can create an ideal inert atmosphere which is loved by welders. Argon is used to shield the metals that are being welded so they don’t oxidise. Argon – much more than ‘lazy’ Argon has no colour, taste or odour, but it’s much more than that – even though it got its name from the Greek word for ‘lazy’, given how well it does its job without reacting. Argon can be used in fluoro lights, but for DIY and industrial processes, rent free argon really is handy. Again, it’s all about the non-reactive qualities of argon. So when welding those speciality alloys, for example, rent free argon is perfect. A versatile gas Because it’s all around us as an element of our breathable air, argon is abundant and inexpensive. Mixed with other gases, argon is regarded as the perfect shielding gas for TIG welding. But argon is also used for MIG welding, protecting that weld from the reactive properties of the air around it. Argon is also a great insulator, so deep sea divers love it to keep them warm in those deep, dark depths. Argon can also help to preserve things. What, exactly? Important historical documents, for example, can have argon pumped into their enclosures, which will help to protect the paper or ink from degrading over time. Argon is also used for wine preservation. In this way, argon supplied by Rent Free Gas could easily have been used for that 500-year-old map of the world in the US Library of Congress, or a priceless and super-rare copy of the historic [...]

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October 2016

Our gas delivery makes your project easy

Categories: Gas cylinder delivery|Tags: , , , , , |

When it comes to all of the home, commercial and industrial projects that are on your 'to do' list, we know how important they are to you, your family and your business. So whether it's argon, O2, CO2, nitrogen or helium that you need to see you through, fast and efficient gas delivery is what we supply without question. Argon Argon is a popular gas used as a shielding agent in aluminium and steel welding, whether your project requires the TIG or MIG process. If you need argon, we do your gas delivery either by Australia Post for small cylinders, or we'll deliver the larger cylinders right to your door ourselves, provided you are within 30km of the CBD in Sydney, Melbourne, Brisbane or Adelaide. Oxygen We also do gas delivery for your applications that require oxygen. Most of the time, you'll want your oxygen for the flexibility of the burning flame – but it may be that you won't want to use O2 every day. If that's the case, then renting makes little sense, because those renting costs quickly add up. If you get your delivery from Rent Free Gas, you will have your very own gas cylinder, which means you can forget all about rental fees. CO2 If delivery of CO2 is what you desire, you could be wanting it for a huge range of various and innovative applications. It is relevant for many DIY, commercial, hospitality and industrial uses, but whatever you need it for, efficient and speedy delivery is a key to getting that project done right. Luckily, our delivery options have you covered, because we either post it to almost every postcode in Australia, or deliver it ourselves to any place within 30kms of the capital cities (excluding WA) . Nitrogen Just like argon, oxygen and CO2 gas delivery, we're passionate about getting nitrogen to you as well. It helps our customers in so many ways, from small home applications to the [...]

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Oxygen LPG vs. oxygen acetylene

Categories: DIY gas needs, Oxy and LP gas welding, oxygen bottles for sale|Tags: , , , |

Oxygen mixed with a fuel gas is one of the most widely used industrial thermal cutting processes, because it can cut material that is up to 250mm thick, is cost effective, and can be used either manually or mechanically. The two most widely used cutting fuels are LPG (propane) and acetylene, with acetylene being seen for years as the industry standard. However, recently many have questioned whether acetylene is better for cutting than propane or LPG and a debate in oxy-LPG vs. acetylene has emerged. Below, we compare the two and look at the advantages and disadvantages of each, so you can decide where you fall in the oxy LPG vs. oxy acetylene debate. Oxy LPG advantages • Propane has a greater total heat of combustion • Oxy propane is easy to obtain and cheaper • Propane is more stable. Oxy LPG disadvantages • Propane produces a lower flame temperature • There is increased pre-heat time • Propane flames are less focused and therefore piercing is slower • Propane can’t be used for gas welding because it doesn’t have a reducing zone • In terms of oxy propane vs. oxy acetylene, propane is often used when cut quality is not essential. Oxy acetylene advantages • Acetylene produces the hottest flame temperature for oxy fuel cutting and welding • The hotter temperature creates a quicker piercing of materials • Oxy acetylene can be used on sites with no power supply • It is quite a versatile process and can be used to weld most metals. Oxy acetylene disadvantages • Acetylene weld lines are rougher in appearance and need more finishing • Acetylene is unstable and expensive • Regarding oxy propane vs. oxy acetylene, there are more safety issues with oxy acetylene, because there is a naked flame. Oxy LPG vs. oxy acetylene – it's your call! Whichever side you choose in oxy lpg vs. oxy acetylene, don’t be sucked into charging rental costs on gas cylinders you’ll only [...]

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Nitrogen gas bottle uses… more than just welding!

Categories: Nitrogen Cylinder, nitrogen sales|Tags: , , , , , , |

Welding with a nitrogen gas bottle For stainless steel tube welding, a nitrogen gas bottle is a perfect purge gas. You probably require nitrogen for your DIY welding projects or for your nitrogen plastics welding system, but you may not be aware that it has so many other uses. Nitrogen, whose symbol is N or N2, makes up no less than 78% of the Earth's atmosphere. It has no colour, odour, taste or toxicity and it is not flammable. It was officially isolated in the 18th century, but scientists knew about this element – crucial to biological life – long before this. The uses of a nitrogen are endless! You will be amazed at just how many uses a nitrogen gas bottle has. Use this versatile inert gas to superbly inflate tyres, improving tyre life and also minimising the risk of tyre blowouts. Or use your nitrogen to mix it with CO2 for your beer making. In the form of a nitrogen gas bottle, N2 is a seriously handy gas. It can be used in food packaging, wine making, air conditioning and scientific testing – and that's just the start of the possible uses. Nitrogen gas bottles are commonly used in industry for blanketing or purging, which involves the removal of unwanted or unstable gases or compounds, while nitrogen is also used to control the temperature of computer CPUs and for making light bulbs. Ever played with a paintball gun? Nitrogen have been used to supply the power source, even if you may think that carbon dioxide is the obvious choice. A nitrogen gas bottle can also be used for plasma cutting and in combination with argon for a shielding gas. Nitrogen is also used in combination with CO2 in cold brewing coffee. Whatever you need a nitrogen gas bottle for, you can be sure that, here at Rent Free Gas, we have all your requirements covered. Give us a call 0404 677 187  today.

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Welding made easy with MIG gas

Categories: ARGON 5-2 GAS CYLINDER, TIG welding gas, Welding Gas|Tags: , , , , , |

Welding using a metal inert gas (MIG) welder is really not difficult. Using a MIG welder is easy with the right MIG gas. Plenty of MIG gas options MIG welding is a simple, easy and popular welding process that uses electricity and MIG gas to melt and join metal. Luckily, when it comes to picking the right gas to use, there are plenty of options. Why do you need MIG gas? You need MIG gas in order to shield the weld from the air. But it’s not just the case of picking a MIG gas randomly. Basically, you need to make the right choice of MIG gas to: Determine the depth of the weld Determine the characteristics of the welding arc Determine the weld’s mechanical properties. How to get your gas choice right Rent Free Gas can help advise you as to what is the best MIG gas to use in your particular case. Argon can be used for your MIG welding, especially for steel and aluminium, and Argon 5-2 is also great for mild steel welding. Some other common MIG gases are CO2 and Oxygen, with Helium being the least common. Often, these gases will be fixed together, although Argon and carbon dioxide can be used as a pure MIG gas. In many cases, up to three MIG gases can be combined; typically Argon, CO2 and Helium, or Argon, CO2 and O2. Pure CO2 as a MIG gas can produce the deepest penetrating welds, although the welds can also be rough. A MIG gas made up of CO2 and Argon is very popular, although if you are welding stainless steel, the best MIG gas mix is probably mostly Argon and CO2. 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 [...]

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September 2016

How to work safely with compressed gases

Categories: Gas Cylinder Safety, Safety issues|Tags: , , , , , |

Whether using a nitrogen gas bottle or some other type of compressed gas, it’s certain compressed gases need to be handled with care. The rent free gas bottles we supply contain gas under pressure (otherwise known as compressed gas), and all the gases we supply are non-flammable. However it is important to always carefully consider your safety and the safety of others when buying compressed gases. Safely store your rent free gas bottles When you purchase your gas cylinders, you need to think carefully about where you plan to store them, how you will encourage proper ventilation when they’re in use, and how to transport them properly without doing any damage. How to store bottles properly If you have rent free gas cylinders, even if you plan to use them the next day, chances are you might need to store them for a few hours. To do this, make sure they are secured, so they cannot fall over and stored in a place that is away from high temperatures – so be wary of a garage that gets too hot – and make sure they are placed according to health and safety regulations. Ensuring proper ventilation When using gas, make sure you are doing it in a properly ventilated area. Make sure any ducts or hoods in the space are suited for that specific gas use before you put it into operation. Make sure systems are explosion and corrosion proof so you don’t do damage to the area you’re working in. Also take care to wear proper eye, ear, body and face protection so you don’t hurt yourself. Transporting gas bottles safely When moving rent free gas bottles from place to place, always have the valve caps on them for protection. Be careful when lifting the cylinders too – don’t pull them by their valve caps or roll or slide them along the ground, as these actions can cause them damage. However, if moving a short distance, you can safely roll the cylinder on the bottom [...]

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Common uses of welding gas bottles

Categories: Rent free welding gas bottles, Welding Gas|Tags: , , , |

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 [...]

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Saving money with rent free welding gas bottles

Categories: rent free gas bottles, Rent free welding gas bottles|Tags: , , , , , |

In any market, the debate between renting and owning is a struggle. In the current housing market, economists go back and forth about the wisdom of buying when renting could make just as much or more economic sense. Some refuse to buy a new car when a comfortable lease seems to be a great deal. When it comes to your welding gas cylinders, however, it’s clear sense to buy rather than rent. Whether you’re an enthusiast welder or sourcing materials for your business, owning rent free welding gas bottles will save you money every time. Rent free welding gas cylinders make sense If you’re a regular welder, the expense of renting gas cylinders adds up quickly; if you run a garage or machine shop, the costs can be monumental. While a backyard hobbyist might go through a bottle every month or so, a professional welder can easily go through a bottle in a couple of days. On average, the purchase of a gas bottle is the equivalent of between about one or two years of rental. That may sound like a lot, but considering the life of use you’ll get out of a gas cylinder, the figures speak for themselves. Lifetime savings with rent free bottles Industrial gas cylinders need to be retested every 10 years. At that point, they must be hydrostatically tested before they can legally be refilled. As long as they pass testing at that point, the cylinder is good for another 10 years. This is our cost, not yours. Many gas cylinders, given the proper amount of care and maintenance, last for decades. The value-added aspect of having the cylinders delivered and swapped over as opposed to having to constantly haul and exchange rented cylinders, makes the decision to buy significantly more appealing. Some buyers worry that owning bottles might leave them stranded, if technology or standards change. As you own the cylinder you are free to sell it or have [...]

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What is TIG welding gas?

Categories: TIG welding gas|Tags: , , |

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 [...]

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