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Oxy-fuel Technology

Oxy-fuel Technology. Welding I CMR Great Falls, MT. A few facts to know…. -Came into widespread use during World War One -Produces one of hottest known flames: 6300 deg F. Flame-Cutting Review. Steel Burns!! “If it rusts, you can burn it!”. *Fuel Gas for Preheating

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Oxy-fuel Technology

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  1. Oxy-fuel Technology Welding I CMR Great Falls, MT

  2. A few facts to know… -Came into widespread use during World War One -Produces one of hottest known flames: 6300 deg F

  3. Flame-Cutting Review Steel Burns!! “If it rusts, you can burn it!” *Fuel Gas for Preheating *Oxygen jet oxidizes; blows through metal

  4. The Equipment Regulators -Two Stage -Single Stage

  5. Single StageRegulator -Cheaper in cost -Less restriction; more gas flow -Allows pressures to change

  6. Two Stage Regulator -More expensive -Maintains pressure levels -Two separate diaphragms

  7. Welding/Cutting Blowpipes Two basic types -Medium Pressure Blowpipe -Injector Blowpipe

  8. Injector Blowpipe -Used with low pressure systems (less than 1 lb.) -Not as common

  9. Medium Pressure Blowpipe -Used with medium pressure (over 2 lbs) -Work best with equal pressures between gases when welding

  10. Torch Check Valves -Used to prevent reverse flow -MUST be in place on either cutting or welding outfits

  11. Oxygen Bottle Seamless Spun Steel -One piece of unbroken steel Safety Fuse Plugs -On Back of Valve -Copper Discs; release gas when heated

  12. Oxygen Cylinder Manufacture *Starts as a Seamless Steel Tube

  13. The base…

  14. And now the neck…

  15. Acetylene Bottle Fuse Plugs -located top and bottom of bottle -special alloy that melts in heat Bottle Contents -Filler -Acetone -Acetylene

  16. Production of Acetylene -Calcium Carbide mixed with water; gives off Acetylene -Popular lighting technology for a long time

  17. Production of Oxygen -Liquid Air Production Air compressed; cooled; then heated (separating nitrogen & oxygen) *Most of Welding Oxygen produced this way

  18. Electrolytic Process Russian Mir Space Station Electric current passed through water; separating hydrogen & oxygen

  19. The Action of Oxygen Causes Rusting of Iron Accelerates Burning Copper Discoloration Corrosion of Aluminum *One of Nature’s Most Common Elements!! Photo by Scott T. Baxter

  20. Industry and Oxy-Fuel Today Found in flame-cutting operations -CNC controlled *Commercial Oxy-fuel Welding replaced by MIG,TIG, Submerged Arc Welding

  21. Fuel Gas Comparison Acetylene hottest; unstable; expensive; small shop settings; adaptable Propane/Natural Gas coolest; stable; cheaper; used for thick metal in industry

  22. In Comparison.. Plasma Cutting -Good up to 6 inches thick -Faster; cleaner cuts -Can cut alloys

  23. Industrial CNC Application CNC Industrial Plasma Cutters in Action

  24. References http://www.metalwebnews.com/howto/weld/weld.html http://www.machinist.org/army_welding/Ch5.htm#fig5_6 http://www.seniortimes.com/jan99/cars.html http://www.hydrospin.com/product_info/steel_manufacturing.html http://www.plasma-cutter.com/history.htm http://www.nacuttingsystems.com/plasma-heavy.htm http://www.signalmetal.com/PRODUCTS/flame.html http://www.scottecatalog.com/ScottGas/welcome.nsf/Subjects/ssgtech http://www.viewimages.com/ http://yellowairplane.com/

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