Ultrasonic spot welding machine welding is not firm how to solve?

The weak welding may be caused by the following factors:

Improper power setting: Adjust the power setting to ensure that the welding energy is suitable for the material. 

Insufficient welding time: Increase welding time to ensure sufficient fusion of materials. 

Welding head wear: Check if the welding head is worn and replace it with a new one if necessary. 

Material differences: Ensure that the type and thickness of the welding material are suitable for the ultrasonic spot welding machine. 

Equipment maintenance: Conduct equipment maintenance, including cleaning and lubrication, to maintain optimal performance of the equipment.