1. Why Is My HF Welding Machine Not Welding Properly?
高频焊接机焊接不牢,粘合不良
Possible causes
Incorrect welding power or welding time.
Insufficient pressure between the electrodes and material.
Dirty, damaged, or poorly aligned electrodes.
Incompatible materials or incorrect material thickness.
Solutions
Check the welding power and time settings.
Adjust the pressure to ensure uniform contact.
Clean the electrode and inspect the mold surface.
Test a small sample and adjust one parameter at a time.
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2. Why Does My HF Welding Machine Burn PVC Material?
PVC 材料烧焦,发黑或出现烧伤痕迹
Possible causes
Excessive RF power or welding time.
Uneven pressure or poor electrode contact.
Damaged electrodes or unsuitable mold geometry.
Inconsistent material thickness.
Solutions
Reduce welding time or power gradually.
Check whether the pressure is evenly distributed.
Inspect the mold for sharp edges, damage, or contamination.
Verify that the material is suitable for high-frequency welding.
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3. Why Does My HF Welding Machine Produce Sparks?
高频焊接时打火,产生电火花
Possible causes
Insufficient or uneven pressure.
Dirty, damaged, or improperly positioned electrodes.
Incorrect electrode clearance or poor insulation.
Material contamination or unsuitable welding conditions.
Solutions
Stop the machine and follow the manufacturer's shutdown procedure.
Inspect the electrode, insulation, and mold alignment.
Clean the working area and check the material for contamination.
Have a qualified technician inspect the spark protection system and RF circuit if sparking continues.
Safety: Never bypass the spark protection system or inspect energized high-voltage components.
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4. Why Is My PVC Welding Seam Leaking?
PVC 充气产品,气囊或防水制品焊接后漏气漏水
Possible causes
Inadequate fusion along the welding seam.
Uneven pressure or incomplete electrode coverage.
Wrinkles, dust, or moisture between material layers.
Inconsistent material thickness.
Solutions
Inspect the entire seam for weak or unbonded areas.
Ensure the materials are clean, flat, and correctly positioned.
Verify mold flatness and pressure uniformity.
Adjust power and time through controlled sample testing.
Perform the appropriate leak test for the finished product.
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5. Why Is My HF Welding Machine Not Producing Enough Power?
高频输出功率不足或焊接效果不稳定
Possible causes
Incorrect power settings.
Unstable incoming power supply.
Worn or faulty RF components.
Poor electrode matching or unsuitable mold conditions.
Solutions
Check the displayed settings and machine alarm messages.
Have a qualified electrician verify the incoming supply against the machine nameplate.
Check the electrode and mold setup.
If the output remains weak, arrange inspection of the RF generator and matching circuit by a qualified technician.