1. Teknologi Dan Rekayasa
OXY-ACETYLENE WELDING

2. OXY-ACETYLENE WELDING EQUIPMENT
OBJECTIVE :
After studying this lesson, the students can be to identify the various of main welding equipments.
Teknologi dan Rekayasa

3. OXY-ACETYLENE WELDING EQUIPMENT
Oxy acetylene welding equipment consist:
Gas supply
Oxygen cylinder
Acetylene cylinder or acetylene generator
Regulator
Oxygen regulator
Acetylene regulator
Hose
Oxygen hose
Acetylene hose
Torch with Tip
Goggles
Spark Lighter
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4. OXY-ACETYLENE WELDING EQUIPMENT
Fig.1. Oxy asetylene welding equipment
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5. OXY-ACETYLENE WELDING EQUIPMENT
Oxygen Supply :
Three method by oxygen manufactured:
Liquefiying of atmospheric air
Electrolysis of waters
Heater of bellet
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6. OXY-ACETYLENE WELDING EQUIPMENT
OXYGEN CYLINDER
Fig.2. Liquid oxygen cylinder or Deswar cylinder
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7. OXY-ACETYLENE WELDING EQUIPMENT
Fig.3. Two kinds of oxygen cylinder with 6,91 m3 capacity :
Internal cylinder construction
Exterior cylinder construction
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8. OXY-ACETYLENE WELDING EQUIPMENT
Fig.4. Internal valve oxygen cylinder construction
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9. OXY-ACETYLENE WELDING EQUIPMENT
Fig. 5. Safety plugs of oxygen cylinder
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10. OXY-ACETYLENE WELDING EQUIPMENT
Fig. 6. Kinds of oxygen cylinder with several capacity
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11. OXY-ACETYLENE WELDING EQUIPMENT
Fig.7. Oxygen cylinders on Manifold system
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12. OXY-ACETYLENE WELDING EQUIPMENT
Acetylene Supply
Acetylene gas is made by adding water to calcium carbide, at chemistry reaction is:
CaC2 + 2H2O ---- C2H2 + Ca(OH)2
Calcium carbide + water -- acetylene + slaked lime
Acetylene supply with two method :
Acetylene cylinder
Acetylene generator
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13. OXY-ACETYLENE WELDING EQUIPMENT
Acetylene cylinder
Fig.8. Fusion plug of Acetylene cylinder
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14. OXY-ACETYLENE WELDING EQUIPMENT
Fig.9. Acetylene Cylinder
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15. OXY-ACETYLENE WELDING EQUIPMENT
Fig.10. Valve of acetylene cylinder
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16. OXY-ACETYLENE WELDING EQUIPMENT
Fig.11. Kinds of Acetylene cylinder
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17. OXY-ACETYLENE WELDING EQUIPMENT
Fig.12. Acetylene manifold instalation
Teknologi dan Rekayasa

18. OXY-ACETYLENE WELDING EQUIPMENT
Fig.13. Acetylene Generator
Teknologi dan Rekayasa

19. OXY-ACETYLENE WELDING EQUIPMENT
Regulator
The standard gas regulator is designed to :
Reduce the cylinder pressure to a constant working pressure
Keep the working pressure constant regardless of the rate of flow, size of flame or the gradual reduction of pressure in the cylinder.
Two kinds basic mechanism of regulator is :
Nozle type
Stem type
According to operation there are two kinds regulator :
Single stage regulator
Two stage regulator
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20. OXY-ACETYLENE WELDING EQUIPMENT
Fig.14. Single stage regulator
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21. OXY-ACETYLENE WELDING EQUIPMENT
Fig 15. Scheme of nozle type regulator
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22. OXY-ACETYLENE WELDING EQUIPMENT
Fig.16. Scheme of stem type regulator
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23. OXY-ACETYLENE WELDING EQUIPMENT
Fig.17. Two stage regulator
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24. OXY-ACETYLENE WELDING EQUIPMENT
Fig.18. Two stage regulator with 2 diaphragm
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25. OXY-ACETYLENE WELDING EQUIPMENT
Fig.19. Exterior and interior pressure gauge
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26. OXY-ACETYLENE WELDING EQUIPMENT
Fig.20. Pressure gauge/manometer
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27. OXY-ACETYLENE WELDING EQUIPMENT
Hoses
The gas is carried between the regulators and torch by flexible reinforced rubber hoses. The hoses are coloured black, green for oxygen and red for acetylene
Fig.21. Single hoses
Fig.22. double hoses
Teknologi dan Rekayasa

28. OXY-ACETYLENE WELDING EQUIPMENT
Fig.23. Fitting and nut for gas hoses
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29. OXY-ACETYLENE WELDING EQUIPMENT
Torch/Blowpipe
Two kinds of torch :
Welding torch
Cutting torch
Type of welding and cutting torch :
1. Injector type
2. Mixer type
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30. OXY-ACETYLENE WELDING EQUIPMENT
Fig.24. Scheme of welding torch
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31. OXY-ACETYLENE WELDING EQUIPMENT
Fig.25. Mixer Torch
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32. OXY-ACETYLENE WELDING EQUIPMENT
Fig.26. Torch valve
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33. OXY-ACETYLENE WELDING EQUIPMENT
Fig.27. Mixing chamber of Mixer torch
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34. OXY-ACETYLENE WELDING EQUIPMENT
Fig.28. Mixing chamber of Injector torch
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35. OXY-ACETYLENE WELDING EQUIPMENT
Fig. 29. Design of Torch Tip
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36. OXY-ACETYLENE WELDING EQUIPMENT
Fig.30. Mixer welding torch with torch tip
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37. OXY-ACETYLENE WELDING EQUIPMENT
Fig. 31. Files for tip cleaning
Teknologi dan Rekayasa

38. THE END
THANK YOU
Teknologi dan Rekayasa