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Unit 7.7 Welding. Welding. 1. What is essential to know to achieve optimum performance of your plasma cutting system?. 2. Welding. What is Plasma? It’s the fourth state of matter that forms because of heat added to gas. 3. Welding.

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Unit 7 7 welding

Unit 7.7

Welding


Welding
Welding

1. What is essential to know to achieve optimum performance of your plasma cutting system?


2 welding
2. Welding

  • What is Plasma?It’s the fourth state of matter that forms because of heat added to gas


3 welding
3. Welding

3. What is the perfect cut? It Would Have a Square angle, no Metallurgical Changes, and no kerf


4 welding
4. Welding

4. List 4 types of cutting methods. Chemical, Thermal, Mechanical, and Thermal-chemical


5 welding
5. Welding

5. What is the 4th state of matter? Plasma


6 welding
6. Welding

6. What are the first three states of matter? Solid, liquid, and Gas


7 welding
7. Welding

7. Define ice. Ice is the solid state of water


8 welding
8. Welding

8. Define steam. Steam is the gas form of water


9 welding
9. Welding

9. Explain ionization of gases.


10 welding
10. Welding

10. What is a natural example of plasma . Lightning


11 welding
11.Welding

11. Define Plasma Cutting.


12 welding
12.Welding

12. What does the torch do? The torch is a holder for consumable parts and provides cooling to these parts


13 welding
13.Welding

13. What does the nozzle and electrode do?


14 welding
14.Welding

14. What are the four major system components of every plasma cutting system? Start Signal, Torch Starting Mechanisms, Gas Flow, Pilot Arc


15 welding
15.Welding

15. Define power supply. Produces constants pure DC Output


16 welding
16.Welding

16. Explain what the gas console does?


17 welding
17.Welding

17. Explain the functions of the torch. Holds the consumable parts and cools them it is the most important piece of the puzzle


18 welding
18.Welding

18. List the sequence of events that takes place with plasma cutting.


19 welding
19.Welding

19. What does OCV stand for? Open current Voltage


20 welding
20. Welding

20. What does HF stand for? High frequency


21 welding
21. Welding

21. When the pilot arc is brought into contact with the ___Work Piece_______, it will attach to the workpiece. The ___Plasma_______ arc melts the metal, and the high velocity gas removes the molten material.


22 welding
22. Welding

22. What causes nozzle damage? Pitting and Ovaling the ofrice


23 welding
23. Welding

23. What is torch shielding?


24 welding
24. Welding

24. List 4 benefits of torch shielding?


25 welding
25. Welding

25. Define Kerf: an opening caused by metal removed by plasma arc


26 welding
26. Welding

26. Define dross. Dross is the resolidfied on the bottom or top of the cut


27 welding
27. Welding

28. What are lag lines? Lag lines are ripples on the cut face or surface


28 welding
28. Welding

28. What are three applications of using plasma cutting?