Table of Contents
Consumables
The Dragon A400 uses shielded consumables for optimal performance. Bend-Tech recommends using these consumables whenever possible.
Consumables Parts
- Nozzle: Focuses the arc. Check for roundness and slag buildup.
- Electrode: Inspect for pit depth to determine wear.
- Swirl Ring: Ensure no cracks or clogged holes.
- Retaining Cap: Should be free of slag and intact.
- Shield Cap: Check for clean holes and proper gas flow.
Signs That Consumables Need Replacing
- Bad Electrode: Green arc discoloration, excessive dross, misfiring.
- Bad Nozzle: Wide kerf, slow cutting speed, oblong holes.
Maximizing Consumable Life
- Use fine-cut consumables for thin materials (3/16 in. or smaller).
- Ensure cutting speed matches material thickness.
- Maintain proper gas supply (90-135 psi recommended).
- Keep the torch clean and properly mounted.
- Use correct lead-in/lead-out settings to avoid nozzle damage.
Cutting Charts
The following cutting charts provide baseline settings for different material thicknesses.
45 AMP: Mild Steel
| Thickness (in.) | Cut Height (in.) | Pierce Height (in.) | Feed Rate (ipm) | Amps |
|---|---|---|---|---|
| 0.0625 | 0.06 | 0.09 | 80 | 30-34 |
| 0.125 | 0.07 | 0.1 | 65 | 32-36 |
| 0.1875 | 0.08 | 0.11 | 50 | 35-40 |
| 0.25 | 0.09 | 0.12 | 35 | 42-45 |
| 0.375 | 0.09 | 0.12 | 25 | 45 |
65 AMP: Mild Steel
| Thickness (in.) | Cut Height (in.) | Pierce Height (in.) | Feed Rate (ipm) | Amps |
|---|---|---|---|---|
| 0.0625 | 0.06 | 0.09 | 80 | 30-34 |
| 0.125 | 0.07 | 0.1 | 65 | 32-36 |
| 0.1875 | 0.08 | 0.11 | 60 | 42-45 |
| 0.25 | 0.09 | 0.12 | 60 | 55-60 |
| 0.375 | 0.09 | 0.12 | 60 | 65 |
Troubleshooting
Common plasma cutting issues and solutions.
Cut Quality Issues
- Jagged Cuts: Adjust material feed rate, ensure proper amperage.
- Oval Holes: Check cutting speed and material clamping.
- Torch Not Firing: Verify power supply, air pressure, and consumables.
- Torch Colliding with Material: Ensure correct material selection in software.
Plasma System Gas Supply
Maintaining proper gas or air supply ensures consistent performance.
- Recommended Settings: 6 cfm at 90 psi (Powermax45), 12 cfm at 180 psi (larger models).
- Minimize air hose length and junctions to prevent pressure loss.
- Use a filter, dryer, and oil separator for clean air supply.
- Check for leaks or restrictions in the system.
Contact Mac-Tech
Phone: (877) 622-8324
Email: info@mac-tech.com
Website: www.mac-tech.com
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