THE OXYACETYLENE TORCH

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THE OXYACETYLENE TORCH

• AENT2803
• ASSIGNMENT 10
• DR.CURTIS BORNE

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1 PART I CUTTING TORCH RIG

• LABELLING O/A EQUIPMENT
• 1. WORKING PRESSURE GAUGE
• 2. CYLINDER PRESSURE GAUGE
• 3. OXYGEN REGULATOR

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2
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2
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O x y g e n
gas
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LABELLING PARTS CONTINUED

• 4. ACETYLENE REGULATOR
• 5. HOSES
• 6. TIP
• 7. TORCH
• 8. SPARKLIGHTER
• 9. WRENCH

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O x y g e n
gas
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2. PRESSURE READINGS

• HIGH PRESSURE IN CYLINDER
• CYLINGER PRESSURE
• LOW PRESSURE IN TORCH
• WORKING PRESSURE

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TORCH HOSES

• 3. OXYGEN HOSE IS GREEN
• 4. ACETYLENE HOSE IS RED

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5. CUTTING PRESSURE SETTING

• RATIO OF 2.5 PSI OF OXYGEN
• TO 1 PSI OF ACETYLENE
• NEVER OVER 15 PSI OF ACETYLENE
• THICKNESS OF METAL AND TIP SIZE DETERMINES
  PRESSURE

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5 PSI OF ACETYLENE AND 12.5 PSI OXYGEN
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OXYACETYLENE WELDING

• USES LOWER PRESSURE
• 3 PSI ACETYLENE
• 7.5 PSI OXYGEN

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6. OPEN OXYGEN CYLINDER

• OPEN ALLTHE WAY

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7. OPEN ACETYLENE CYLINDER

• NOT MORE THAN1-1/2 TURNS

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8. GAUGES

• ON REGULATORS

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9. MANIFOLD TORCH SYSTEM

• AT FVSU CYLINDERS OUTSIDE
• GASES PIPED INTO MULTIPLE STATIONS

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10. OXYGEN CYLINDERS

• RIGHT HAND CONNECTOR THREAD

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11. OXYACETYLENE GOGGLE

• 6 FILTER LENS USED FOR TORCH WORK
• DONT BE STUBBURN REMEMBER TO WEAR GOGGLES

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12. CHECKING FOR TORCH LEAKS

• USE SOAP AND WATER

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13. HOSE CONNECTIONS

• SHOULD BE HAND TIGHT

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14. PARTS OF CUTTING TORCH
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5
3
2

• 1. CUTTING TIP
• 2. MIXING CHAMBER
• 3. TORCH HEAD
• 4. OXYGEN SET AT TWO PLACES
• 5. ACETYLENE AT ONE PLACE
• 6. OXYGEN LEVER

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4
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SETTING CUTTING FLAME

• WEAR GLOVES 6 LENS GOGGLES
• HOLD TORCH IN BOTH HANDS
• USE NEUTRAL FLAME
• TOO MUCH ACETYLENE SENDS FLAME AWAY FROM TIP
• TOO LITTLE CAUSES BLACK SMOKE

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OBTAINING NEUTRAL FLAME

• 1. OPEN ACETYLENE 1/2 TURN
• 2. USE STRIKER TO LIGHT
• 3. OPEN OXYGEN SLOWLY UNTIL FLAME IS NEUTRAL

Flame Tip
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CUTTING PROCEDURE

• PREHEAT UNTIL CHERRY RED
• PRESS OXYGEN LEVER
• MOVE STEADLY ACROSS METAL
• IF YOU MOVE TOO FAST CUTTING STOPS AND MUST
  PREHEAT AGAIN

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TORCH SAFETY

• 6 FILTER LENS
• FASTEN CYLINDERS WITH CHAIN
• KEEP SAFETY CAPS ON CYLINDERS
• CHECK FOR LEAKS WITH SOAPY WATER
• NEVER PUT OIL ON EQUIPMENT

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SAFETY CONTINUED

• OPEN ACETYLENE CYLINDER 1-1/2 TURNS
• POINT TIP AWAY FROM YOU AND OTHERS
• USE PROPER PRESSURE (LESS THAN 15 PSI)
• USE STRIKER NOT MATCHES
• NEVER LAY LIGTHED TORCH DOWN

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SHUTTING DOWN PROCEDURE

• TURN OFF ACETYLENE FIRST AT TORCH
• TURN OFF OXYEN AT TORCH
• CLOSE CYLINDERS
• DRAIN HOSES