A WILKINSON STAR LIMITED PRODUCT 12-16 ISSUE 1
Notes on cutting
Problems
The workpiece is not cut fully. This may be caused by:
The cutting current is too low.
The cutting speed is too high.
The electrode and nozzle of the torch are burned.
The workpiece is too thick.
Molten slag drops from the bottom of workpiece. This may be caused by:
The cutting speed is too low.
The electrode and nozzle of the torch are burned.
The cutting current is too high.
It is recommended not to ignite the arc in the air if not necessary. It will shorten the
lifespan of the electrode and nozzle of the torch.
It is recommended to initiate the cutting from the edge of workpiece, unless penetra-
tion is needed.
Ensure spatter flies from the bottom of workpiece while cutting. If spatter comes up
from the top of workpiece, it indicates that the workpiece is not fully cut because the
cutting torch is moved too fast or the cutting current is too low.
Keep the nozzle slightly touching the workpiece or keep a short distance between the
nozzle and workpiece. If the torch is pressed against the workpiece, the nozzle may
stick to the workpiece, and smooth cutting will be problematic.
For cutting round workpieces or to meeting precise cutting requirement, molding
boards or other tools are needed
It is recommended to pull the cutting torch while cutting.
Keep the nozzle of cutting torch upright over the workpiece, and check if the arc is mov-
ing with the cutting line. If the space is not enough, don’t bend the cable too much,
step on or press upon the cable to avoid suffocating of gas flow. The cutting torch may
be burned because the gas flow is too small. Keep the cutting cable away from edge
tools.
Clean up the spatters on the nozzle timely, for it will affect the cooling effect of the noz-
zle. Clean up the dust and spatters on the torch head after using everyday to ensure
good cooling effect.
