How to solve the problem of card board in the reflow soldering furnace

In the daily reflow soldering process, there may be problems with card boards. In the face of this situation, timely and correct handling is very important. JEENOCE shares the reasons and solutions for card boards appearing in the reflow soldering furnace.

The possible reasons for the occurrence of card boards in the reflow soldering furnace may include:

1. Design issues with the PCB board itself: If welding issues were not taken into account during the design process, deformation and board jamming may occur during the production process.

2. Unstable conveyor belt: Problems such as unbalanced conveyor belt and inconsistent speed can cause the board to jam, affecting production progress.

3. High or low reflux furnace temperature: Unstable reflux furnace temperature or improper temperature adjustment can also cause board deformation or jamming.

4. Insufficient preheating of PCB board: The deformation of the board caused by insufficient preheating can also affect the conduction effect and the occurrence of board jamming.

5. Excessive solder paste during welding: Improper or excessive application of solder paste can easily cause the board to get stuck.

The solutions include:

1. PCB board improvement design: Design a reasonable PCB board to avoid being too thin or too thick, while also handling the rigidity and curvature of the board.

2. Conveyor maintenance: Regularly check the stability and speed of the conveyor belt, perform regular maintenance and upkeep to avoid paint peeling or jamming.

3. Reflux furnace temperature control: Control the stability of the reflux furnace temperature to avoid situations where it is too high or too low.

4. PCB board preheating design: Conduct sufficient PCB board preheating to avoid excessive acceleration and insufficient preheating time.

5. Control the amount of solder paste used during welding: It is not advisable to use too much solder paste to avoid board jamming caused by excessive solder paste.

If there is a card in the reflow soldering furnace, the following steps can be taken to solve it:

1. Do not feed the board into the furnace again.

2. Open the furnace cover as soon as possible and remove the stuck board.

3. Check the cause of the blockage and take appropriate measures to resolve it.

4. Wait until the temperature meets the requirements before continuing welding.

In addition, if there is an alarm situation in the equipment, welding should be stopped immediately, the cause of the alarm should be checked in a timely manner, and then dealt with in a timely manner.