At the end of this module, you will be able to:
- Oxyacetylene flame cutting and equipment
- Safety guidelines when using oxygen and acetylene
- Flashback arrestors
- Operator variables
- The definition of plasma cutting
- Plasma cutting equipment
- Cut quality
The following key questions are answered in this module:
What is oxyacetylene welding?
Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on the combustion of oxygen and acetylene.
What safety guidelines should you follow when working around oxygen?
The following should be considered when working around oxygen: if oxygen comes into contact with oil or grease, it will burst into flames; never use oil or grease on oxygen cylinder valves or regulators; make sure hands and gloves are free of oil and grease before handling cylinders; crack open the cylinder valve then close it before installing the regulator to clear the valve of any dirt.
What is the primary function of a gas regulator?
The primary function of a gas regulator is to control gas pressure. It reduces the high pressure of the bottle-stored gas to the working pressure of the torch and maintains the pressure during welding.
What is plasma cutting?
Plasma cutters work by sending a pressurized gas, such as nitrogen, argon, or oxygen, through a small restricted opening (the nozzle). In the center of the nozzle is a negatively charged electrode. When power is applied to the negative electrode, the tip of the nozzle is touched to the metal. The connection creates a circuit.
How do you determine what a quality plasma cut looks like?
Quality plasma cuts should have smooth faces with dross or slag that is easily removed. For superior cuts on stainless steel and aluminum, a plasma gas other than compressed air might be necessary.
Below is a transcript of the video sample provided for this module:
Use the additional resources and links below to learn more about this topic: