Many teams regard discharge calibration as a routine step in booting up, and ignore the prompts if they pass. In fact, the arc energy will continue to drift with electrode consumption and environmental conditions. The real meaning of calibration is to bring the drift back to the baseline, provided that the criteria are understood.

Check the electrode status first and then talk about calibration

If the electrode tip becomes rounded, white powder adheres to it, or the discharge position shifts, the welding loss will increase or even bubbles may appear. Generally, it is recommended to replace the electrode after a total of two thousand to three thousand discharges. Please refer to the machine instructions for details. After replacing the electrode, the standard calibration must be redone, and the old parameters cannot be used to continue construction, otherwise the data before and after will not be comparable.

Environmental modifiers are most likely to be missed

• As the altitude increases, the air becomes thinner and the arc energy is higher, so the arc energy is usually adjusted down by 1 level according to the environmental table.
• In a low-temperature environment, the fiber feeding and melting time is relatively short, so low-temperature corrections must be made and trial melting must be completed in an insulating box.
• In high-humidity or dusty environments, perform two or three dust cleaning discharges before formal calibration to avoid impurities being brought into the arc zone.

Confirm the results with three-core test melting

Calibration prompts are not available in the field. Take three sections of equipment for test welding. The average reading should be within 0.03 dB, and a single point should not exceed 0.05 dB. The welding shape of the three cores should be consistent, without bubbles or necking. If one of the cores deviates obviously, it is probably because the cutting angle is too large or the V-shaped groove has accumulated dust. Clean the fixture and groove first and then retest. It is recommended that the trial melting section be in the same batch as the finished equipment, for exampleSC-SC single mode single core jumperThe matching pigtail prevents batch differences from being mixed into the conclusion.

Make the calibration a recorded fixed action: the number of electrodes, environmental correction gears, and three-core readings are all written into the construction log. When the loss is abnormal, there will be comparable historical data. EB-LINK's technical support can also judge whether to adjust gears or change electrodes based on the logs.