HEATING, BRAZING & WELDING Technical Data Sheets
Heating Equipment HD HEATING HEADS *HD-1 *HD-2 *HD-3 *HD-4 *HD-5 435 105 63 27
Brazing Equipment Ph: 281-471-2200 Fx : 281-471-2201 18005 E Hwy 225 La Porte, TX 77571 WWW.GASINNOVATIONS.COM
Brazing with Flame Identification The flame illustrations above is a close resemblance between the oxidizing flame and the neutral acetylene flame. Also keep in mind that multiport brazing heads have different oxy-fuel ratios than single-port tips. For example, Oxy- ratios for multiport heads should be 2.5-to-1 for a carburizing flame; 3.0-to-1 for a neutral flame and 4.0-to-1 for an oxidizing flame. The reason why oxy-fuel ratios are higher for multiport heads than for equivalent single port tips is fairly simple. A manual brazing torch normally has a single flame port. In addition to the oxygen it consumes through the torch, the flame also uses oxygen from the air surrounding the flame's surface. Multi-port heating heads exclude some of the atmospheric oxygen from their inner flames. Not as much oxygen is taken into the secondary flame cones of these heating flames. This "missing" oxygen is made up by increasing the oxy-fuel ratio. Therefore, a single flame requires less oxygen through the torch. Similar considerations explain the difference in oxy-fuel ratios between different fuels. A flame takes 40% of its oxygen requirement from atmospheric oxygen. Acetylene flames take about 50% of the oxygen they need from the atmosphere. Propane and natural gas use little atmospheric oxygen; their oxygen-fuel ratios remain nearly constant whether the fuels are burned in single or multi-port heads because 85% to 95% of the oxygen required must be supplied through the torch. That's oxygen that will cost you money. COUPLING DISTANCES The distance between the face of the brazing flame head and the work piece is called the coupling distance. can be used for precisely controlled brazing and heating simply by adjusting the coupling distance. As a result, allows far greater control over the braze metal puddle than does acetylene. The reason is that acetylene's coupling distance is far smaller, and therefore more critical than that of. For any fuel gas, coupling distance depends on port velocity and port size. For, the distance is about 5/16to 7/8 in. USING LIQUID FLUXES Work with liquid fluxers shows that picks up sufficient flux for excellent brazed joints. When setting up the fluxer, adjust it so that all the fuel goes through the fluxer and none through the bypass. Use a minimum 8-psig fuel pressure for best results. Formation of crystal beads on the pilot light, or a glazed appearance on the work, indicates an excessive amount of flux. This condition can be corrected by opening the bypass valve slightly. If the primary flame can be seen at the torch, it indicates insufficient flux through the lines. If that occurs, close the bypass valve. A neutral flame should be used with a fluxer. An oxidizing flame will cause the braze deposit to burn. A white deposit forming around connections and valves is boric acid; it indicates loose connections. Never attempt to take a fluxer apart until the pressure is off the entire system. The efficiency of a fluxer decreases with temperature. It may be necessary to heat the fluxer with a 60-watt bulb if the ambient temperature falls below 60 F. Brazing techniques with are the same as for acetylene.
Welding with WELDING WITH Converting to acetylene gauges, torches and welding tips usually work well with. Very often, the same size tip can be used for welding with acetylene or. However, if the Acetylene tip is being used at its maximum output, it may be necessary to use a tip one or two sizes larger for welding with. Below is a good guide to follow. More detailed information on equipment and tip selection is available from GAS INNOVATIONS or our Distributors. Substituting Acetylene Tips for Use: *Note: For injector type equipment use 1-2 psig and 25 30 psig oxygen for all sizes of tips Occasionally a harsh, bushy flame is needed for a particular job. In such cases counter boring may be required to give a harsh yet stable flame with. The table above lists the counter bore drill to be used with each acetylene tip drill size. In every case the depth of counter bore is 1/16 in.
Performance, Versatility & Economics Productivity + Savings Compare the difference yourself.. Fabricating & Plate Cutting Industry 63 lb Plumbing Industry and HVAC Use 6 lb Calculate your cost of 300 cu.ft. Acetylene vs 63 lb Gas Acetylene Cost @ per 100 cu.ft. X 3.0 (300 cu.ft./cyl.) = $ per cylinder X 4 cylinders. = Total Acetylene cost $. Cost @ per lb. X 63 lb cylinder = Total Cost $. Your Savings = $ Calculate your cost of 40 cu.ft. B Acetylene vs 6 lb Acetylene Cost @ per 100 cu.ft. X 0.4 (40 cu.ft./cyl.) = $ per cylinder X 3 cylinders. = Total B Acetylene cost $. Cost @ per lb. X 6 lb cylinder = Total Cost $. Your Savings = $ Calculate your cost of 15 cu.ft. MC Acetylene vs 6 lb Acetylene Cost @ per 100 cu.ft. X 0.15 (15 cu.ft./cyl.) = $ per cylinder X 6 cylinders. = Total MC Acetylene cost $. Cost @ per lb. X 6 lb cylinder = Total Cost $. Your Savings = $