PK LASER · PK LASER Joint Stock Company
Slow or poor cutting does not always mean the laser source has lost output power. Check focus, nozzle height, speed, assist gas and source condition against the machine’s approved process data.
A machine may cut more slowly or leave a rough edge even when the laser source is operating normally. The result also depends on the optics, focus, nozzle-to-sheet height, cutting speed, material and assist gas. Diagnose the process before concluding that source power has fallen.
An incorrect focus position can change spot size, kerf and energy distribution through the material. Contamination or damage to a protective window or other optic can also reduce delivered energy or distort the beam. Start with the approved recipe and have optical components checked using the head manufacturer’s procedure.
The nozzle-to-sheet distance affects gas flow and cut stability. A gap that is too high or too low for the approved process can contribute to poor edge quality or incomplete cutting. Check the nozzle condition and height-control calibration, and verify that the head follows sheet variation as intended. Do not treat one standoff value as suitable for every head and process.
A speed that is too high for the material and thickness may leave uncut sections or dross. A speed that is too low can add heat and worsen the edge. Confirm the material, thickness and selected recipe, then use controlled test cuts and change one permitted setting at a time.
The gas type, purity, pressure and stable flow all affect how molten material leaves the kerf. Check the supply, filters, regulators, hoses and leaks against the machine and gas supplier specifications. Do not reduce or increase pressure based on a general rule; use the approved parameter chart for the exact material and nozzle.
If the process, optics, nozzle and gas have been checked and performance remains low, the source or another machine component may need inspection. Review alarms and maintenance records, then ask qualified service personnel to measure and diagnose output using the manufacturer’s procedure. Do not open the source or attempt a high-power measurement yourself.
Record the material and thickness, selected recipe, nozzle, gas setting, cut sample and any machine alarm in one clear service photo set. This gives a technician useful context without exposing an open beam path.
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