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Questions and Answers
Which flame is commonly used by automotive technicians?
Which flame is commonly used by automotive technicians?
- The neutral flame
- The oxidizing flame
- The carburizing flame (correct)
- The purple flame
What is the maximum pressure that acetylene gas should be used at?
What is the maximum pressure that acetylene gas should be used at?
- 10 PSI
- 15 PSI (correct)
- 20 PSI
- 25 PSI
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Study Notes
- The neutral flame is used for welding and burns one part oxygen to one part acetylene.
- The oxidizing flame is used for brazing and has a pointed, purple inner cone.
- The carburizing flame is commonly used by automotive technicians and burns more acetylene than oxygen.
- Safety measures include using the right regulator for the gas, wearing OSHA-approved welding goggles and gloves, and keeping a fire extinguisher handy.
- Acetylene gas should never be used at pressures higher than 15 PSI.
- Oxygen or acetylene should never be used to blow dirt or dust off of equipment.
- A flint striker should be used to light the torch, never matches or a butane lighter.
- Regulators should have their adjusting screws released before opening the cylinder valves.
- Cylinders should be stored in an upright position only and never in temperatures above 130°F.
- Welding hoses should never come into contact with the torch flame or sparks from cutting.
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