Gas Equipment Allows the Ultimate

Stoody Industrial & Welding Supply, Inc. – Headquarters San Diego (619) 234-6750 WWW.STOODYIND.COM GAS EQUIPMENT Gas equipment allows the process is normally reserved for thin too high of a carbon content to cut with ultimate in diversity of process while sections of metal. Acetylene is used this process. being the most economical for initial as a general purpose gas for welding investment. The most common gas most metals. Acetylene puts carbon Acetylene is the most combination used is oxygen and back into the molten weld pool, this is popular fuel for cutting because the acetylene. required when welding common steel time required to preheat the material to such as mild steel because they loose initiate the cut is shorter than other Acetylene being the hottest carbon when melted. The other fuel Fuels. Acetylene is also the most of the fuel gases gives the operator gases do not replace the lost carbon, expensive of the fuel gases. Another the ability to pin point a flame or so the welds may be brittle. This draw back for acetylene is that due to spread out the heat as required, with transfer of carbon causes color the combination of carbon and heat, the proper equipment. Oxygen when changes when welding precious the edges of the cut tend to become added to the flame causes the fuel to metals such as gold or silver, therefore flame hardened making them harder to bum hotter. Other common fuel gases other fuel gases are more appropriate grind or process later. are propane/butane, natural gas, for these metals. hydrogen, MAPP and hybrid forms of Originally cutting torches propane with hydrocarbon additives. The welding torch is basically were made as a separate piece of a handle with two valves. 1; To control equipment from a welding torch. Other than natural gas most the fuel flow, 2; For oxygen control. Cutting torches are still widely used. compressed gases are stored in Connected to the torch is a mixer Now there is the option of a "cutting portable pressurized cylinders. These (often supplied as part of the tip end). attachment" giving more versatility to containers are made specifically to This blends the fuel and oxygen your welding torch. A cutting transport and safely store each type of together then sends the blended gas attachment connects to the welding gas. A pressure regulator is to the tip end. The blend continues torch (where the mixer and tip end connected to each appropriate cylinder through the small hole at the end of would normally go) converting your to allow the reduction of high pressure the tip. This is where the flame is lit. welding torch into a cutting torch. A gas into a controllable low pressure The tip ends come in a variety of hole cutting attachment diverts the oxygen gas. This low pressure gas is sent sizes, depending on how much of a from the welding handle into two down a proper hose (one for the fuel flame is required for different thickness different routes. One route directs the and one for the oxygen, if required) to of material. Torches and tips are oxygen to be mixed with fuel to the control handle or torch. The made to a certain burning ratio, so be provide a flame for the preheat portion process will determine the type of sure to use the proper fuel gas that the of the cutting tip. The remainder of the torch and tip combination. The most equipment was designed for. oxygen becomes available for the common gas processes are: cutting stream. When the cutting lever Heating is used for a variety is depressed the oxygen eventually of purposes such as bending, stress flows through the hole in the center of Soldering – Brazing – Welding – relieving, hardening or softening the cutting tip, creating a cut. Heating – Cutting metals. There are specific torches made exclusively for heating but most Recommended Safety Soldering is accomplished heating is accomplished by simply Equipment: Welding Goggles (shade by heating the base metal to a replacing the welding mixer and tip #5), Safety Glasses, Gloves, temperature hot enough to melt the with a multiflame heating mixer and Protective Hat and Clothing, filler solder (though the base metal nozzle, also known as a "rosebud". Respirator or Welding Fume Mask or never melts). Because this is done at Since this requires a lot more fuel be Exhauster, Check Valves, Flash Back fairly low temperatures (840 degrees F sure to check the tip volume Arrestors, Fire Extinguisher, Safety or lower) the torch often requires only requirement chart to be sure you have Curtains and any other requirements fuel gas. The tip that attaches to the cylinders that can supply enough to provide a safe work environment. torch is designed to derive the oxygen volume of gas. it needs from the atmosphere. Select the proper tip shape and size for the Cutting on ferrous metals WHAT IS MAPP GAS? proper job. The torch and tip are such as mild steel is one of the Dow Chemical Co. made to bum a specific fuel by the quickest ways to shape metal. The developed Mapp® in the 1960's as a manufacturer. Do not change fuel material to be cut is heated to a molten safer fuel to replace acetylene in types. stage then pressurize oxygen is introduced causing the metal to industrial oxygen cutting and brazing Brazing yields stronger actually burn. You may have heard systems. In the 1970's the Turbine joints than soldering (though normally this process be referred to as Swirl Tip turned out to be an ideal not used on structural welds) still "burning". Theoretically, once you air/Mapp® device and eliminated the doesn't melt the base metal even initiate the cut you could turn off the problems encountered with earlier though filler metal is applied at preheat flame and continue to cut air/Mapp®) tips. Mapp® Gas is a temperatures above 840 degrees F. indefinitely, with only the cutting stabilized, shock proof, liquefied The equipment used to braze is the oxygen on (provided you were able to acetyletic compound that, when used same as for welding, though some keep the proper speed of travel, height with a good Turbine Tip, burns 400º to soldering torches can accomplish from the cut and if there were no 500º F. hotter than propane, but not as some light duty brazing tasks. impurities in or on the material). Non hot as acetylene. In addition to being Ferrous metals such as aluminum, shock resistant and safer than Welding takes place by copper, brass and nickel alloys do not acetylene, Mapp® Gas has an melting the base metal together of the react to this “burning” so they only extremely bad odor which makes it item(s) to be joined. Filler metal is melt. Therefore they are not usually impossible not to notice a leak. added for some joint requirements. cut with this process. Cast iron has Due to the tedious procedure, this 017 Master Catalog 1 Condensed Catalog .

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