I. Hydraulic System Faults
1. Insufficient System Pressure: Manifests as insufficient clamping force and weak upsetting, potentially leading to insufficient weld joint strength. Common causes include improper relief valve adjustment, worn or internally leaking oil pump, and pipeline leaks.
2. Overheating Oil: Overheating hydraulic oil reduces viscosity, leading to increased leakage and accelerated aging of seals. This is usually caused by poor heat dissipation, an insufficiently small oil tank, or prolonged overload operation.
3. Oil Pump Malfunction or Insufficient Oil Output: The equipment cannot build pressure, possibly due to low oil level, clogged oil filter, broken pump shaft, or motor failure.
4. Hydraulic Cylinder Creep or Vibration: Unstable movement affects alignment accuracy, often caused by air intake into the system, oil contamination, or aging seals.
II. Electrical and Control System Faults
1. Control Board Malfunction or Slow Response: Unresponsive operation buttons and abnormal parameter display may be caused by poor wiring contact, electromagnetic interference, or control software malfunction.
2. Abnormal Sensor Signals: Failure of pressure, displacement, or temperature sensors can lead to inaccurate automatic control. Wiring and component status must be checked.
3. Overheating or Damage to Power Module: Large voltage fluctuations can easily burn out fuses. It is recommended to install a voltage regulator and overvoltage protector.
III. Mechanical Structure Faults
1. Feeding Mechanism Jamming: Difficult movement of the moving clamp may be due to insufficient oil in the guide rails, poor lubrication, or obstruction by foreign objects. Regular cleaning and lubrication are required.
2. Electrode Wear or Deformation: Burnt electrode heads or surface depressions can affect current conduction and clamping stability. Regular repair or replacement is necessary.
3. Loose Bearings or Connectors: Long-term vibration can cause bolts to loosen and bearings to wear, affecting equipment accuracy and safety. Daily inspection and tightening are required.
IV. Welding Quality Issues
1. Insufficient Joint Strength or Cracking: Caused by insufficient upsetting pressure, improper heating time, or inadequate material pretreatment.
2. Severe spatter or weld oxidation: This is caused by insufficient clamping pressure, excessive current, or inadequate protective measures, resulting in excessively high contact resistance.
3. Uneven or absent flange: Commonly seen in hot-melt butt welding, indicating insufficient pressure or uneven heating plate temperature.
