11 Questions
What are the three methods of bending exhaust pipes?
Program cards, pattern bending, and custom welding
What information do program cards provide for pipe bending?
Pipe length, diameter, and distance between bends
When is custom bending necessary for exhaust pipes?
When there is no program card or existing pipe
What is the purpose of end finishing in exhaust systems?
To connect exhaust system components
What attachments do pipe bending machines have for end finishing?
Swaging and expanding
What is MIG welding?
An arc welding process using a continuous solid wire electrode
What is oxy-acetylene welding used for?
Welding, cutting, and heating to normalize metal
What is included in a welding and cutting set?
Oxygen and acetylene cylinders, regulators, hoses, welding torch, and friction lighter
What is the purpose of shielding gas in MIG welding?
To protect the weld from atmospheric contamination
What are the pressures of compressed gas in cylinders used for welding and cutting?
Up to 2,200 PSI
What is the filler material in acetylene cylinders?
Porous material wetted with acetone
Study Notes
- There are three methods of bending exhaust pipes: program card, pattern bending, and custom bending.
- Program cards provide information on pipe length, diameter, distance between bends, and rotation and depth of bends.
- Pattern bending involves measuring and comparing the old pipe to make a new one.
- Custom bending is necessary when there is no program card or existing pipe.
- End finishing is important for connecting exhaust system components, and pipe bending machines have swaging and expanding attachments for this purpose.
- Metal inert gas (MIG) welding is an arc welding process that uses a continuous solid wire electrode heated and fed into the weld pool from a welding gun.
- Oxy-acetylene welding is used for welding, cutting, and heating to normalize metal, to shrink metal, to forge or shape metal, and to solder.
- The welding and cutting set consists of oxygen and acetylene cylinders, regulators, hoses, welding torch, and friction lighter.
- Shielding gas selection for MIG welding depends on the material being welded and the application.
- The process offers high productivity, as the wire is continuously fed.
- Oxygen and acetylene cylinders are used for welding and cutting metal.
- Cylinders contain compressed gas at pressures up to 2,200 PSI.
- Acetylene cylinders contain a porous filler material wetted with acetone.
- Regulators are used to adjust high oxygen and acetylene pressures to lower working pressures.
- Oxygen and acetylene regulators connect to cylinders differently to avoid mixing them up.
- Double-line rubber hoses are used to connect cylinders, regulators, and torches.
- Check valves and flashback arrestors are used to prevent backflow and flashbacks.
- The torch consists of a handle, oxygen and acetylene gas valves, and a mixing chamber.
- Flashbacks and backfires can occur with improper torch operation.
- Safety precautions must be taken when using oxy-acetylene setups.
Test your knowledge of exhaust pipe bending and welding techniques with this informative quiz! From program cards to custom bending, this quiz covers the various methods of bending exhaust pipes. You'll also be asked about end finishing and welding processes, including MIG and oxy-acetylene welding. Challenge yourself to see how much you know about cylinder safety, regulators, hoses, torches, and more! Take this quiz to see if you're an expert in exhaust system fabrication.
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