branden hale- plasma cutting.ppt
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Plasma Cutter Versus OtherMethods Of Welding And Cutting
Brandon Hale
ELEC 6750Spring 2004
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Questions
In which application is a plasma arcwelder not used?
How does one achieve laser like cutsto a plasma cutter?
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Outline
Definition Of Terms
History
Companies Switching To Plasma Cutters
Plasma Cutting Variables
Adding Laser Like Cuts To A Plasma Cutter
Aerospace Applications
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Definition Of Terms
TIG Tungsten Inert Gas
LBW Laser Beam Welding
EBW Electron Beam Weld
PAW Plasma Arc Welder
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History
1950 TIG Welding
1957 Conventional Plasma Cutting
1962 Dual flow Plasma Arc
1963 Air Plasma Cutting
1968 Water Shield Plasma Cutting 1972 Water Muffler For Plasma Cutting
Bohlen, K. Ed, et al. Hypertherm's plasma cutting history. http://www.hypertherm.com/technology/plasma_history.html
http://www.hypertherm.com/technology/plasma_history.htmhttp://www.hypertherm.com/technology/plasma_history.htm -
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History
1977 Underwater Cutting
1980 Low Amp Plasma Cutting
1983 Oxygen Plasma Cutting
1985 Oxygen Injected Plasma Cutting
1990 High Density Plasma Cutting
Bohlen, K. Ed, et al. Hypertherm's plasma cutting history. http://www.hypertherm.com/technology/plasma_history.html
http://www.hypertherm.com/technology/plasma_history.htmhttp://www.hypertherm.com/technology/plasma_history.htm -
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Companies Switching To
Plasma Cutters Benefits of Plasma Cutting:
Faster Cutting Speed
No Pre-heat Cycle
Smaller Cut Width
Smaller Heat Affected Zone
Portable Unit Cost
Miller Electric Mfg. Co. Plasma Cutting Buyers Guide. Illinois, 2004
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Plasma Cutting Variables
Voltage
Nozzle
Air Flow Rate
S. Ramakrishan, M. Gershenzon, F. B. Polivka, T. N. Kearney, and M. W. Rogozinski, Plasma Generation for the Plasma Cutting Process,IEEE Trans. on Plasma Science, Vol. 25, p.937-946, 1997.
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Adding Laser Like Cuts To
A Plasma Cutter One Input:
2.45 GHz Microwave Continuous-Wave
Magnetron Power Supply
A. Al-Shamma, R. Wyllie, J. Lucas, and J. D. Yan, Atmospheric Microwave Plasma Jet for Material Processing, IEEE Trans. on Pla smaScience, Vol. 30, p.1863-1871, 2002.
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Adding Laser Like Cuts To
A Plasma Cutter
A. Al-Shamma, R. Wyllie, J. Lucas, and J. D. Yan, Atmospheric Microwave Plasma Jet for Material Processing, IEEE Trans. on Pla smaScience, Vol. 30, p.1863-1871, 2002.
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Adding Laser Like Cuts To
A Plasma Cutter Benefit:
The cost savings means that the
microwave plasma torch is a better choicefor material cutting and welding whenprecision is not critical.
- Ahmed I. Al-Shammaa
A. Al-Shamma, R. Wyllie, J. Lucas, and J. D. Yan, Atmospheric Microwave Plasma Jet for Material Processing, IEEE Trans. on Pla smaScience, Vol. 30, p.1863-1871, 2002.
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Aerospace Applications
TIG
Acceptable Welds For Copper
Excessive Porosity And Poor Fusion ForAluminum
EBW
No Fusion Between Aluminum Weld Elements
K. Richardson, B. Stein, P. Shah, and N. Isaacs, Process Development of Electrode-Tab Welds for Aerospace, Lithium-Ion Cells,IEEEConference, Vol. 1, p.651-658, 2000.
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Aerospace Applications
PAW
Best Fusion On Aluminum
Inconsistent Welds LBW
Best Weld For Aerospace Applications
Requires Oxidation of Aluminum
No Preparation For Copper
K. Richardson, B. Stein, P. Shah, and N. Isaacs, Process Development of Electrode-Tab Welds for Aerospace, Lithium-Ion Cells,IEEEConference, Vol. 1, p.651-658, 2000.
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Conclusion
Plasma Cutters Have Led CompaniesIn A Direction To Benefit From Costs
Savings As Well As Quicker ProjectCompletion Times
However, Plasma Cutting Yields
Numerous Benefits, It Is NotApplicable For All Jobs
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Questions and Answers
In which application is a plasma arcwelder not used?
Aerospace
How does one achieve laser like cutsto a plasma cutter?
Take a microwave continuous-wavemagnetron for the power supply
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References
Bohlen, K. Ed, et al. Hypertherm's plasma cutting history.http://www.hypertherm.com/technology/plasma_history.html
Miller Electric Mfg. Co. Plasma Cutting Buyers Guide. Illinois, 2004
A. Al-Shamma, R. Wyllie, J. Lucas, and J. D. Yan, Atmospheric Microwave
Plasma Jet for Material Processing, IEEE Trans. on Plasma Science, Vol.30, p.1863-1871, 2002.
S. Ramakrishan, M. Gershenzon, F. B. Polivka, T. N. Kearney, and M. W.Rogozinski, Plasma Generation for the Plasma Cutting Process, IEEETrans. on Plasma Science, Vol. 25, p.937-946, 1997.
K. Richardson, B. Stein, P. Shah, and N. Isaacs, Process Development of
Electrode-Tab Welds for Aerospace, Lithium-Ion Cells, IEEEConference, Vol. 1, p.651-658, 2000.
http://www.hypertherm.com/technology/plasma_history.htmhttp://www.hypertherm.com/technology/plasma_history.htm
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