unit 7.7 welding
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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. - PowerPoint PPT PresentationTRANSCRIPT
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Unit 7.7Welding
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1. Welding
1. What is essential to know to achieve optimum performance of your plasma cutting system?
![Page 3: Unit 7.7 Welding](https://reader036.vdocuments.mx/reader036/viewer/2022062500/56815932550346895dc66c12/html5/thumbnails/3.jpg)
2. Welding
2. What is Plasma? It’s the fourth state of matter that forms because of heat added to gas
![Page 4: Unit 7.7 Welding](https://reader036.vdocuments.mx/reader036/viewer/2022062500/56815932550346895dc66c12/html5/thumbnails/4.jpg)
3. Welding
3. What is the perfect cut? It Would Have a Square angle, no Metallurgical Changes, and no kerf
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4. Welding
4. List 4 types of cutting methods. Chemical, Thermal, Mechanical, and Thermal-chemical
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5. Welding
5. What is the 4th state of matter? Plasma
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6. Welding
6. What are the first three states of matter? Solid, liquid, and Gas
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7. Welding
7. Define ice. Ice is the solid state of water
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8. Welding
8. Define steam. Steam is the gas form of water
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9. Welding
9. Explain ionization of gases.
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10. Welding
10. What is a natural example of plasma . Lightning
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11.Welding
11. Define Plasma Cutting.
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12.Welding
12. What does the torch do? The torch is a holder for consumable parts and provides cooling to these parts
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13.Welding
13. What does the nozzle and electrode do?
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14.Welding
14. What are the four major system components of every plasma cutting system? Start Signal, Torch Starting Mechanisms, Gas Flow, Pilot Arc
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15.Welding
15. Define power supply. Produces constants pure DC Output
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16.Welding
16. Explain what the gas console does?
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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
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18.Welding
18. List the sequence of events that takes place with plasma cutting.
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19.Welding
19. What does OCV stand for? Open current Voltage
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20. Welding
20. What does HF stand for? High frequency
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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.
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22. Welding
22. What causes nozzle damage? Pitting and Ovaling the ofrice
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23. Welding
23. What is torch shielding?
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24. Welding
24. List 4 benefits of torch shielding?
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25. Welding
25. Define Kerf: an opening caused by metal removed by plasma arc
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26. Welding
26. Define dross. Dross is the resolidfied on the bottom or top of the cut
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27. Welding
28. What are lag lines? Lag lines are ripples on the cut face or surface
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28. Welding
28. What are three applications of using plasma cutting?