There are benefits to both. If you buy a new kit from The Welders Warehouse, you’ll not only get a Propane Regulator with Gauges (most have no gauges), but you’ll also get one of our EXCELLENT, purpose designed Multi-Jet Torches. One of the most widely used cutting tools around is the oxy-fuel or oxy acetylene cutting torch, also commonly referred to as the blow torch. Hope I’ve helped When brazing and soldering, most HVACR technicians routinely use manual torches as their heat source. The oxidizing flame adjustment is sometimes given as the amount by which the length of a neutral inner cone should be reduced, for example, one tenth. See figure 11-1. They impart a low temperature soaking heat to the parts being soldered. Oxy Acetylene welding is a welding process manually, in which the surfaces to be joined, which is warming to melt by a gas flame Oxyacetylene with or without filler metal, where the connection process without emphasis. The acetylene flame is long, bushy, and has a yellowish color. The feedback so far has been fantastic, but admittedly, it’s that new that not many guys have them yet. so it is vital i have similar control/performance, Hi Dave F. can be achieved, making Acetylene ideal for welding and cutting. The quantity of preheat can be adjusted by raising or lowering the preheat pressures to the torch. Graham. This pure acetylene flame is unsuitable for welding. It has a yellow feather on the end of the primary cone. A neutral MAPP gas flame has a primary flame cone abut 1-1/2 to 2 times as long as the primary acetylene flame cone. Hi Desmond This variation within the flame permits some temperature control when making a weld. A carburizing flame is advantageous for welding high carbon steel and hard facing such nonferrous alloys as nickel and Monel. When cold, the weld has the properties of high carbon steel, being brittle and subject to cracking. View our range of Oxy Propane or Propylene Kits. Oxidizing flame - If there is excess oxygen, the whitish-blue flame will be smaller than the blue flame. OK, so you already have an Oxygen Regulator, Flash Arrestor and Hose, along with a Torch. The carburizing flame may add carbon to the weld metal. The position of the flame to the molten puddle can be changed, and the heat controlled in this manner. Open the acetylene torch valve 1/4-turn and ignite the gas by striking the spark lighter in front of the tip. Lighting, adjusting and shutting down an oxygen-acetylene torch is easy – especially when following the proper procedures. It is generally preferred for welding. An oxidizing action can be obtained by increasing the oxygen flow, and a reducing action will result from increasing the acetylene flow. Testing Connections for Leaks Close both torch valves. Now I mentioned earlier that there was another option. The oxidizing flame, which has an excess of oxygen, has a shorter envelope and a small pointed white cone. Depending on the condition of your Oxy Acetylene kit, you may find it doesn’t cost a great deal extra to sell your existing kit (as a complete kit), then buy a complete NEW Oxy Propane/Propylene Kit. This is the neutral MAPP gas flame for welding, shown in figure 11-3. A stronger oxidizing flame is used in the welding of brass or bronze. Torches should be lighted with a friction lighter or a pilot flame. Although acetylene has a higher flame temperature (3160 °C, 5720 °F), MAPP has the advantage that it requires neither dilution nor special container fillers during transport, allowing a greater volume of fuel gas to be transported at the same given weight, and it is much safer in use. Most small regulators designed for Oxygen or Butane will have an anti flash device built in, but if your not sure you should definitely check! In most cases, the amount of excess oxygen used in this flame must be determined by observing the action of the flame on the molten metal. Thanks for the Questions Propane torches work the best for small soldering or heating jobs because of their portability. Kind regards The flame can be made soft or harsh by varying the gas flow. All #3, #4, #5 cylinders (full or empty) must have their cylinder caps in place at all times. For most welding operations, this streamer should be no more than half the length of the inner cone. MAPP gas has a high heat release in the primary flame, and a high heat release in the secondary. Only operational difference is it will take slightly longer to get the steel up to cutting temperature before you activate the Cutting Oxygen. Hope I’ve helped. Note: Acetylene Cylinder #2 has a male threaded CGA 520 Valve. It provides the means for applying the flame at the desired location. !. Required fields are marked *, Welding Equipment & Welding Supplies since 1993. You can use a Cutting Torch with all 3, but Oxy/Propane & Oxy/Propylene use a different Nozzle to Oxy/Acetylene. Also is it possible to use a cutting torch with oxy/propened ? The chemical action of the flame on a molten pool of metal can be altered by changing the ratio of the volume of oxygen to acetylene issuing from the tip. Kind regards Meanwhile, plasma cutting cuts through conductive material by using a jet of plasma and an electrical charge. Oxyacetylene Welding Unit 1 Information Sheet 1. (c) Adjusting a MAPP gas flame. Many thanks, Thanks for the kind comment Malcolm. The temperature is the highest just beyond the end of the inner cone and decreases gradually toward the end of the flame. 1. It is obtained by gradually opening the oxygen valve to shorten the acetylene flame until a clearly defined inner cone is visible. High heat is also necessary for good adhesion and capillary action to occur when using silver-based solder. The inner cone or vivid blue flare of the burning mixture of gases issuing from the tip is called the working flare. FREE Shipping. Flame Temperature: acetylene: 3,100 °C (oxygen), 2,400 °C (air) blowtorch: 1,300 °C (2,400 °F, air) Bunsen burner: 1,300-1,600 °C (2,400-2,900 °F, air) butane: 1,970 °C (air) candle: 1,000 °C (1,800 °F, air) carbon monoxide: 2,121 °C (air) cigarette: 400-700 °C (750-1,300 °F, air) ethane: 1,960 °C (air) hydrogen: 2,660 °C (oxygen), 2,045 °C (air) MAPP (1.6 to 3.2 mm) long at the end of the cone to ensure that the flame is not oxidizing. What will be produced, however, is a typical oxidizing MAPP gas flame. The oxyfuel gas welding torch mixes the combustible and combustion-supporting gases. You WILL need to change your Acetylene Regulator to a Propane type (including for Propylene). With Acetylene becoming increasingly frowned upon at commercial sites, getting in now with Propane or Propylene could be a smart move. This type of flare burns with a coarse rushing sound. propane tank. Cutting or burning of … They are shown in figure 11-2. Not always the case here! Surrounding this is a light blue flame envelope or sheath. Most oxyacetylene welding is done with a neutral flame having approximately a 1:1 gas ratio. "The temperature of the flame can reach as high as 6,300 (3,480)." Oxy-Acetylene is the process of using a high-temperature heat source, usually a torch, to heat metal. In the neutral flame, the temperature at the inner cone tip is approximately 5850°F (3232°C), while at the end of the outer sheath or envelope the temperature drops to approximately 2300°F (1260°C). There is not sufficient oxygen to provide complete combustion, so the flame is smoky and produces a soot of fine unburned carbon. It is so high (up to 6000°F (3316°C)) that products of complete combustion (carbon dioxide and water) are decomposed into their elements. He found that he needed to go up a Nozzle from No3 with Acetylene to No4 with Propane because of the lower flame temp. The neutral flame begins when the feather disappears. Short answer: Yes! This flame is actually reducing in nature but is neither carburizing or oxidizing. Heating values of fuel gases are shown in table 11-3. The propane and Oxy/Acetylene torch kits and plasma cutting and gouging kits offered here include all the essentials you need in one convenient package. If it says “Acetylene” you will need to change it for a “Fuel” type. This is “Graham’s blog”, not Dave’s That’s not to say we’re “Daveist” it just means we don’t currently have any Dave’s working for us For the oxygen, turn the pressure-adjusting … Continue to open the acetylene valve slowly until the flame burns clean. Starting with a neutral flame adjustment, the welder can produce the desired acetylene feather by increasing the acetylene flow (or by decreasing the oxygen flow). This white feather is called the acetylene feather. The** carburizing flame** has excess acetylene, the inner cone has a feathery edge extending beyond it. Thanks Des. Too high a gas flow will result in a harsh, high velocity flame that is hard to handle and will blow the molten metal from the puddle. Only operational difference is it will take slightly longer to get the steel up to cutting temperature before you activate the Cutting Oxygen. I do try hard to cover as much of the basics as possible, so it’s nice to know it’s appreciated. Propane on the other hand requires a ratio of 4.3:1. Slightly carburizing or “reducing” flames are used to weld or braze easily oxidized alloys such as aluminum. Instead I want to concentrate on the equipment differences and what you need to change when swapping from Oxy Acetylene to Oxy Propane or Propylene. cutting torch tips are much easier to deal with than some other oxy fuel oxygen acetylene torch tips. Sometimes people forget to tell the reader the basic information or assume we all already know! F. With the addition of Oxygen a flame temperature in excess of 6000 deg. So for example when using acetylene, its maximum flame temperature in oxygen is achieved with a 1.2:1 fuel to oxygen ratio. Most operators don’t find this a problem. When a strongly carburizing flame is used for welding, the metal boils and is not clear. For brazing there are generally two equipment options to choose from: oxygen/acetylene or air/acetylene. - Maximum neutral flame temperature of acetylene in oxygen is about 5720 F.- Maximum neutral flame temperature of propane in oxygen is about 5112 F But they say that the difference doesn’t matter, what really matters is the thermal output- BTU's of Acetylene is approximately 1470 btu's per cubic foot. Hope I’ve helped This indicates that the excess oxygen is combining with the steel and burning it. There’s no reason why you can’t continue to use these, although there is another option that I’ll come to later! 99. The reducing or carburizing flame is obtained when slightly less than one volume of oxygen is mixed with one volume of acetylene. Give me a call (number on our website), next week for a chat and I can bring you up to speed a bit more. Burn weeds, melt snow, remove paint from non-flammable surfaces and more with this propane torch. While propane-oxygen combinations can reach a maximum temperature of 3,623 degrees F, or 1,995 degrees C, a propane-butane torch only goes up to 2237 degrees F, 1225 degrees C. Carburizing flames are obtained with MAPP gas when oxyfuel ratios are around 2.2:1 or lower. This flame will ruin most metals and should be avoided, except as noted in (c) below. The chart below illustrates how the temperature is affected by this ratio. Pros and Cons of Using a Cutting Torch Other gases in use are propane (C 3 H 8 ), propylene (C 3 H … He combined both pure oxygen (99.5%) and acetylene in proper proportions to yield a flame of about 3,480 degrees Celsius.Oxyacetylene the only gas mixture that will burn hot enough to cut steel. Oxygen + Propylene has a flame temp around 3000ºC I regret we’ve never tried it with Butane and Air, but I suspect it wouldn’t work very well. While alternate fuel gases are available, most contractors still use acetylene. The 2 best ways are Air Acetylene and Oxy Acetylene. When welding steel with this flame, the molten metal puddle is quiet and clear. Hi Graham what is the temperature difference between using propane and acetylene ? The inner zone consists of a luminous cone that is bluish-white. The equipment features and benefits of each type will be the focus in this article. The metal flows easily without boiling, foaming, or sparking. The flame is neutral just at the point of disappearance of the “feather” extension of the inner cone. The closer the end of the inner cone is to the surface of the metal being heated or welded, the more effective is the heat transfer from flame to metal. It has a temperature of approximately 5700°F (3149°C) at the inner cone tips. This is a great propane torch for small … The neutral flame has a clear, well-defined, or luminous cone indicating that combustion is complete. i lead weld professionally for a living. Soldering occurs at approximately 400 degrees. The torch commonly used by welders is called an oxy-fuel welder or cutter. Only negative feedback I’ve had from guy’s on roofs is that Propane can be difficult to light as the flame blows out easily before you bring the Oxy on. Swapping from Oxy Acetylene to Oxy Propane or Propylene, Can I use Propane or Propylene Instead of Acetylene, https://www.thewelderswarehouse.com/Welding-Supplies/Cutting-Torch.html. Oxygen acetylene torches are the most common, using acetylene (C 2 H 2) as the main fuel in combination with oxygen to generate the highest combustion temperature of approximately 3160 °C. We’ve just introduced a new “Pro-Jet” Nozzle for the Model ‘O’ Torch that overcomes this irritating issue. The welding flame should be adjusted to neutral before either the carburizing or oxidizing flame mixture is set. ... See all 26 photos To set the flame, open the acetylene valve on the torch … Both adjustments are valuable aids in welding. The flame temperature is controlled by adjusting the O/F Ratio. In brazing or soldering applications, the question is; what is the best, most efficient and economical way to get the job done. Thomas Wilson created the oxyacetylene torch in 1903. Graham, Very informative. Starting with the neutral flare, the welder can increase the oxygen or decrease the acetylene until the length of the inner cone is decreased the desired amount. The temperature of the oxyacetylene flame is not uniform throughout its length and the combustion is also different in different parts of the flame. The neutral flame is obtained most easily by adjustment from an excess-acetylene flame, which is recognized by the feather extension of the inner cone. Too low a gas flow for a given tip size will result in a soft, ineffective flame sensitive to backfiring. For a strictly neutral flame, no whitish streamers should be present at the end of the cone. In addition to the purposes of welding (connecting), gas welding can also be used as preheating, brazing, cutting, and hard facing. , hi Dave Short answer: Yes is turned down, the whitish-blue flame will be,. And allowing them to fuse or flow together these applications increasing the,... Basic torch outfit, this torch to any standard 20 lb I use Propane or Propylene.. Them to be welded, brazed, or sparking welding of brass bronze... 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A problem as oxygen is mixed with one volume of oxygen is mixed with one of. New that not many guys have them yet and Free Shipping on Orders $... Connect this torch to any standard 20 lb Model ‘ O ’ torch that overcomes this issue! Have similar control/performance, hi Dave Short answer: Yes mixes the combustible combustion-supporting! I hope you found this blog article about swapping from Oxy acetylene Professional... A primary flame, gives off heat and forms a bright inner cone for most welding operations this. Now I mentioned earlier that there was another option will not be for! Regards Graham, very informative to leave a slight acetylene streamer or “feather” 1/16 1/8!