Exam 8: Plasma Arc Cutting

What is the term used to describe the plasma cutting process that uses two different gasses?

The ____ is made of a special plastic that is resistant to high temperatures, ultraviolet light, and impact.

The earliest gas tungsten arc welding process used ____.

What happens to the plasma column when water is injected around the plasma stream?

The electrode tip is often made of copper with a ________ imbedded in the tip

In stacked cutting of sheets using the PAC process, sheets are held together using ____.

​What happens if the standoff distance becomes too close?

Any material that is ____________________ can be cut using the PAC process.

​Plasma cutting machines can cut mild steel ranging from _____ to _____or more in thickness.

Explain how metal becomes distorted during the welding process.

The plasma created by an arc ____.

The ____ surrounding the nozzle tip is used to control the potential hazards of light, fumes, noise, and other pollutants.

The production of the plasma requires a(n) ____ power supply.

The ____________________ distance is the distance from the nozzle tip to the work.

The ____________________ created by an arc is an ionized gas.

Explain how high-frequency alternating current and a pilot arc can be used to start a plasma arc torch.

Heat distortion is a greater problem for cuts on ________________.

The spacing between the electrode tip and the nozzle tip is called the ____________________.

Keeping the diameter of the nozzle orifice ____ will keep the kerf ____.

Describe the history of the development of plasma arc cutting.