Reflow Welder：top 3 Problems And Solution Ways

In the SMT (Surface Mount Technology) production process, the steel wire mesh conveyor in the reflow soldering equipment is a key component for conveying electronic components.

Ladder belt, as a commonly used mesh belt for reflow soldering, has three common problems: unsmooth mesh belt conveying, mesh belt breakage, and uneven mesh belt conveying.

The transportation is not smooth.

Possible causes:

Uneven tension of the mesh belt: Uneven tension of the steel wire mesh conveyor can cause fluctuations during operation, affecting the conveying efficiency.

2. Drive unit failure: Problems with the drive unit such as the motor and reducer will affect the normal operation of the steel wire mesh conveyor.

3. Material issue of steel wire mesh conveyor: Insufficient tensile strength of the material may lead to a decline in the performance of the mesh belt.

Solution

1. Adjust the tension of steel wire mesh conveyor: Regularly inspect and adjust the tensioning device of the mesh belt to ensure uniform tension.

2. Inspect and maintain the drive unit: Regularly inspect the drive unit and promptly repair or replace any issues found.

3. Replace steel wire mesh conveyor with a suitable material: ladder belt are commonly made of SUS304 material. Only standard SUS304 material can meet the requirements.balanced wave mesh belts can also be used and made of special 304 material.

The mesh belt is broken

Possible causes:

1. Long-term overloading operation: Exceeding the designed load of and running for a long time will cause material fatigue.

2. Fatigue of the mesh belt material: Due to material aging or prolonged use, the strength of the mesh belt decreases.

3. Accidental damage: steel wire mesh conveyor is damaged due to improper operation or external factors.

Solution

1. Avoid overloading operation: Ensure that the operating load of the mesh belt is within the designed range and avoid overloading.

The balanced wave mesh belt is made of spiral weaving. Compared with the single-layer mesh surface of the ladder mesh belt, its load-bearing capacity is slightly stronger.

2. Regularly inspect the condition of the mesh belt: Regularly check the mesh belt and deal with any problems found promptly.

3. Replace damaged mesh belts in a timely manner: For already damaged mesh belts, they should be replaced promptly to prevent further damage.

The mesh belt conveyor is uneven

Possible causes:

1. Interference: During the operation of the reflow soldering equipment, interference may occur, such as uneven feeding or scraping of the mesh belt, resulting in an uneven conveyor of the mesh belt.

2. Mesh belt deformation: When used in high-temperature environments, the mesh belt deforms, such as the issue of the edges of Type B mesh belt lifting that we introduced last time.

Solution

1. Avoid interference: Standardize the training of staff to prevent uneven feeding or violent interference and other situations.

2. Avoid deformation of the mesh belt: The flatness of ladder mesh belts is relatively difficult to control, and the mesh belt manufacturers need to carry out pre-deformation treatment during production.

Secondly, the balanced wave mesh belt, as a more precise specification mesh belt, is equipped with a dedicated gear drive to ensure that the mesh belt conveying is in a relatively flat state.

The stable operation of the reflow soldering equipment mesh belt is the foundation for the smooth progress of the SMT production line.Regular inspection, maintenance and timely replacement of parts are effective means to ensure the normal operation of the mesh belt and extend its service life.

Through these comprehensive measures, it can be ensured that the reflow soldering equipment mesh belt performs at its best in the SMT production process, bringing higher production value to the enterprise.