Electrical Engineering & Electronics /CAC-A (Carbon Arc Cutting-Air) Process
CAC-A (Carbon Arc Cutting-Air) Process
This deck covers key concepts and equipment details related to the CAC-A process, including electrode types, cutting techniques, and safety measures.
The CAC-A process uses a high-current electric arc between the base metal and the end of a(n) ____ to melt the bar metal
A carbon-graphite electrode
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Key Terms
Term
Definition
The CAC-A process uses a high-current electric arc between the base metal and the end of a(n) ____ to melt the bar metal
A carbon-graphite electrode
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During the CAC-A process, jets of compressed air are used to blow the ____ away from the cut
Molten metal
When cutting and gouging with CAC-A equipment in the flat position, the jet orifices of the torch head must be located ____ the electrode
Under
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The electrode tip should be no further than ___ from the electrode tip to the contacts to prevent overheating
6"
Light duty gouging or cutting is typically done with a ____ welding machine
200A
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Heavy duty cutting can require a torch air supply up to ____ cfm at 80 psig to 100 psig
50
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| Term | Definition |
|---|---|
The CAC-A process uses a high-current electric arc between the base metal and the end of a(n) ____ to melt the bar metal | A carbon-graphite electrode |
During the CAC-A process, jets of compressed air are used to blow the ____ away from the cut | Molten metal |
When cutting and gouging with CAC-A equipment in the flat position, the jet orifices of the torch head must be located ____ the electrode | Under |
The electrode tip should be no further than ___ from the electrode tip to the contacts to prevent overheating | 6" |
Light duty gouging or cutting is typically done with a ____ welding machine | 200A |
Heavy duty cutting can require a torch air supply up to ____ cfm at 80 psig to 100 psig | 50 |
Compressed air is supplied to the torch through a hose attached to a fitting on the _____. | Work cable |
Electrode design for AC current contain a rare earth _____ ingredient | Arc-stabilizer |
The most common style of CAC-A electrode used for Manual cutting or gouging is the _____ electrode | Round |
When performing CAC-A cutting or gouging, the minimum groove width is controlled by the ____ being used | Size of the electrode |
Because CAC-A activities tend to blow molten metal considerable distances, it is important to station a(n) ______ in the CAC-A work area | Fire watch |
To wash a projection from a metal surface using CAC-A equipment, the electrode is typically used at a push angle of about _____ degrees to the base metal surface | 55 |
Torches with special washing heads in which the air orifices are located on one side of the electrode are limited to cutting from _____ directions | One |
In CAC-A gouging, groove depth is determined by the electrode _____ | Travel died an angle |
In CAC-A gouging, bottom contour is determined by the electrode ______. | Travel angle and speed |