Question

instructions: fill in the blanks

1. the ___________ has a small, cone - shaped, constricting orifice in the center.
2. the ____________ is the distance from the nozzle tip to the work.
3. a ___________ is an arc between the electrode tip and the nozzle tip within the torch head.
4. the term __________ is defined as gas that has been heated to at least a partially ionized condition, enabling it to conduct an electric current.
5. the plasma created by an arc is an ____________ that has both electrons and positive ions whose charges are nearly equal to each other.
6. the spacing between the electrode tip and nozzle tip, called _________, is critical to the proper operation of the system.
7. often the plates must be preheated before they are cut using oxyfuel to reduce the ____________.
8. __________ is the metal compound that resolidifies and attaches itself to the bottom of the cut.
9. the __________ is the space left in the workpiece as the metal is removed during the cut.
10. the ____________ is often made of copper with an imbedded tungsten tip.
11. the ________, sometimes called the ________, is made of ceramic or any other high - temperature - resistant substance.

true or false mark the following statements true or false in the space .
______ 12. there are two methods used to establish a current path through the gas. the most common method uses a high - frequency alternating current carried through the conductor, the electrode, and back from the nozzle tip.
______ 13. when using a water shroud nozzle, the water inside the tip is used to produce hazards of light, fumes, noise, or other pollutants potential to the process.
______ 14. the plasma arc produces both the low temperature and restricting light associated with all forms of arc welding and arc cutting processes.
______ 15. the very high temperatures of the plasma process allow much higher travel rates so that the same amount of heat input is spread over a much larger area. this has the effect of lowering the joules per inch of heat the weld or cut will receive.

Explanation:

Fill in the Blanks Answers:

1. Nozzle (has a small, cone - shaped, constricting orifice in the center).
2. Stand - off distance (is the distance from the nozzle tip to the work).
3. Pilot arc (is an arc between the electrode tip and the nozzle tip within the torch head).
4. Plasma (is defined as gas that has been heated to at least a partially ionized condition, enabling it to conduct an electric current).
5. Ionized gas (the plasma created by an arc is an ionized gas that has both electrons and positive ions whose charges are nearly equal to each other).
6. Arc gap (the spacing between the electrode tip and nozzle tip, called arc gap, is critical to the proper operation of the system).
7. Thermal stress (often the plates must be preheated before they are cut using oxyfuel to reduce the thermal stress).
8. Dross (is the metal compound that resolidifies and attaches itself to the bottom of the cut).
9. Kerf (is the space left in the workpiece as the metal is removed during the cut).
10. Electrode (is often made of copper with an imbedded tungsten tip).
11. Nozzle, tip (the nozzle, sometimes called the tip, is made of ceramic or any other high - temperature - resistant substance).

True or False Answers:

1. True (There are two methods used to establish a current path through the gas. The most common method uses a high - frequency alternating current carried through the conductor, the electrode, and back from the nozzle tip).
2. False (When using a water shroud nozzle, the water inside the tip is used to reduce the hazards of light, fumes, noise, or other pollutants potential to the process, not produce).
3. False (The plasma arc produces high temperature and intense light associated with all forms of arc welding and arc cutting processes, not low temperature and restricting light).
4. True (The very high temperatures of the plasma process allow much higher travel rates so that the same amount of heat input is spread over a much larger area. This has the effect of lowering the joules per inch of heat the weld or cut will receive).

Answer:

Fill in the Blanks Answers:

1. Nozzle (has a small, cone - shaped, constricting orifice in the center).
2. Stand - off distance (is the distance from the nozzle tip to the work).
3. Pilot arc (is an arc between the electrode tip and the nozzle tip within the torch head).
4. Plasma (is defined as gas that has been heated to at least a partially ionized condition, enabling it to conduct an electric current).
5. Ionized gas (the plasma created by an arc is an ionized gas that has both electrons and positive ions whose charges are nearly equal to each other).
6. Arc gap (the spacing between the electrode tip and nozzle tip, called arc gap, is critical to the proper operation of the system).
7. Thermal stress (often the plates must be preheated before they are cut using oxyfuel to reduce the thermal stress).
8. Dross (is the metal compound that resolidifies and attaches itself to the bottom of the cut).
9. Kerf (is the space left in the workpiece as the metal is removed during the cut).
10. Electrode (is often made of copper with an imbedded tungsten tip).
11. Nozzle, tip (the nozzle, sometimes called the tip, is made of ceramic or any other high - temperature - resistant substance).

True or False Answers:

1. True (There are two methods used to establish a current path through the gas. The most common method uses a high - frequency alternating current carried through the conductor, the electrode, and back from the nozzle tip).
2. False (When using a water shroud nozzle, the water inside the tip is used to reduce the hazards of light, fumes, noise, or other pollutants potential to the process, not produce).
3. False (The plasma arc produces high temperature and intense light associated with all forms of arc welding and arc cutting processes, not low temperature and restricting light).
4. True (The very high temperatures of the plasma process allow much higher travel rates so that the same amount of heat input is spread over a much larger area. This has the effect of lowering the joules per inch of heat the weld or cut will receive).