How to get better pierces -32, How to increase cutting speed -32 – Hypertherm HT4400 HySpeed Plasma Arc Cutting System User Manual
Page 91
OPERATION
4-32
HT4400
Instruction Manual
2
Shield Adapter Life
1. Make sure the shield adapter does not touch the plate during cutting.
2. Set the pierce height between 1.5 to 2 times higher than the torch-to-work height. Keep the shield clean to
prevent double arcing.
How to Get Better Pierces
1. Start the arc on the edge of the material with a pre-punched side, if possible.
2. Make the IHS setting constant. The initial pierce height should be between 1.5 to 2 times higher than the
torch-to-work height.
3. Make sure the pierce delay is on long enough to allow the arc to pierce through the material before the
machine moves.
4. Use a higher shield pre-flow to help pierce through and blow the molten metal away. This may affect
starting reliability.
How to Increase Cutting Speed
1. Lower the torch-to-work distance. However, the shield can not touch the plate. The cutting surface will
bevel inside when the torch-to-work distance is too low.
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