PCB steel mesh mainly has the following factors that will affect the quality of PCB steel mesh:
1. Production Process: The best process is electropolishing after laser steel mesh cutting. Chemical etching and electroforming processes are prone to errors such as film making, exposure, and development. Electroforming is also affected by the unevenness of the substrate.
2. The materials used: This includes the PCB screen frame, wire mesh, steel sheet, and adhesive glue. The PCB screen frame must withstand the relay of a certain program and have a good level. It is best to use a polyester mesh for the screen, as it can maintain stable tension for a long time. The steel sheet should be made of 304 for better results, and a matte finish is preferred over a mirror finish for rolling the solder paste. The adhesive used must be strong enough and resistant to corrosion.
3. Opening Design: The quality of the opening design has the greatest impact on the quality of the PCB stencil. Consider the manufacturing process, width to thickness ratio, area ratio, and empirical values when designing the openings.
4. Production Data: The completeness of production data will also affect the quality of the PCB steel mesh. The more information, the better. Clearly indicate which data prevails when multiple sources exist. Using data files for making stencils can help reduce errors.
5. How to Use: The correct printing method is essential for maintaining stencil quality. Incorrect printing methods like excessive pressure or uneven PCB stencil or PCB placement during printing can damage the stencil.
6. Cleaning: Solder paste can solidify quickly. Cleaning the stencil promptly is important to prevent blockages in the openings. Clean the PCB stencil after it is removed from the machine or if no solder paste is printed for an hour.
7. Storage: Store the steel mesh in a specific place to avoid accidental damage. Avoid stacking the PCB steel mesh to prevent bending of the screen frame and make handling easier.
1. Production Process: The best process is electropolishing after laser steel mesh cutting. Chemical etching and electroforming processes are prone to errors such as film making, exposure, and development. Electroforming is also affected by the unevenness of the substrate.
2. The materials used: This includes the PCB screen frame, wire mesh, steel sheet, and adhesive glue. The PCB screen frame must withstand the relay of a certain program and have a good level. It is best to use a polyester mesh for the screen, as it can maintain stable tension for a long time. The steel sheet should be made of 304 for better results, and a matte finish is preferred over a mirror finish for rolling the solder paste. The adhesive used must be strong enough and resistant to corrosion.
3. Opening Design: The quality of the opening design has the greatest impact on the quality of the PCB stencil. Consider the manufacturing process, width to thickness ratio, area ratio, and empirical values when designing the openings.
4. Production Data: The completeness of production data will also affect the quality of the PCB steel mesh. The more information, the better. Clearly indicate which data prevails when multiple sources exist. Using data files for making stencils can help reduce errors.
5. How to Use: The correct printing method is essential for maintaining stencil quality. Incorrect printing methods like excessive pressure or uneven PCB stencil or PCB placement during printing can damage the stencil.
6. Cleaning: Solder paste can solidify quickly. Cleaning the stencil promptly is important to prevent blockages in the openings. Clean the PCB stencil after it is removed from the machine or if no solder paste is printed for an hour.
7. Storage: Store the steel mesh in a specific place to avoid accidental damage. Avoid stacking the PCB steel mesh to prevent bending of the screen frame and make handling easier.
