What parameters do you need to focus on when using FFU in an SMT workshop?
SMT workshops have specific requirements for FFU parameters
The SMT workshop includes solder paste printing, patching, reflow soldering, AOI testing and other processes. The workshop is densely equipped with equipment and frequently operated by personnel, and some processes may produce dust or volatile matter. The use of FFU in SMT workshops must not only provide clean air supply, but also coordinate with equipment operation, personnel operation and maintenance conditions.
Therefore, when selecting FFU in an SMT workshop, you cannot just look at one parameter. You need to combine process dust generation, equipment heating, operating actions and installation conditions to check the air volume, static pressure, filtration level, noise, air supply uniformity and control method.
Aili Industrial has complete production capabilities in FFU matching in the electronics industry and can provide selection solutions based on SMT workshop conditions. For the basic structure of the FFU machine, you can refer toAili Industrial FFU fan filter unit。
How to check air volume and static pressure
The air volume determines the air supply capacity. The FFU air volume of the SMT workshop should be calculated based on the regional cleanliness level, number of air changes or protection area. For local workstations, calculations can be made based on the target wind speed and protected area.
Static pressure determines the FFU's ability to overcome system resistance. The FFU in the SMT workshop may need to be equipped with filters, air supply paths or equipment structures, and system resistance will affect the actual air volume. When selecting a model, you should confirm the static pressure margin at the target air volume and not just look at the full pressure of the bare fan.
The air volume and static pressure should be compared under the complete machine configuration, and the change in the operating point after dust accumulation on the filter should be confirmed.
How to choose filtering level
Filtration level affects particle control capabilities. Different areas of the SMT workshop have different requirements for cleanliness. Patches and detection areas are more sensitive to particles and may require higher efficiency filters. Auxiliary zones can use regular configurations.
The selection of filtration level should be combined with the target cleanliness level and process requirements, and cannot be applied based on experience alone. For the relationship between filter efficiency and cleanliness level, please refer toUnderstand why FFU filtration grade cannot be directly equivalent to ISO cleanliness grade (Note: This link is an example of a filter product page, please refer to the corresponding page on the site for specific content).
How to consider noise
SMT workshops usually have continuous production requirements and personnel need to operate in the workshop. Excessive FFU noise may affect the working environment and personnel comfort. Noise parameters should be confirmed in combination with distance measurement and operating speed, rather than just looking at a single value.
If the FFU is installed on top of the equipment, the noise may affect people near the equipment. If multiple FFUs are running at the same time, room noise may be superimposed. You can confirm the noise of a single unit and the expected room noise when selecting a model.
How to consider air supply uniformity
The uniformity of air supply affects the local protection effect. SMT workshops are densely equipped and the FFU air supply may be blocked by equipment, tooling or lighting fixtures. If the air supply is uneven, some workstations may not have enough airflow.
The uniformity of air supply should be confirmed through measuring points, which cover the air outlet surface, key positions of work stations and equipment shielding areas. For details, please refer toWhy precision electronic production needs to pay attention to the uniformity of FFU air supply (Note: This link is an example of the FFU product page, please refer to the corresponding page on the site for specific content).
How to choose control method
The FFU in the SMT workshop can be connected to the group control system and set different operating modes according to areas or processes. Production mode and duty mode can be set separately. If the workshop has partition control requirements, you can choose a controller that supports partition settings.
For control methods, please refer toFFU/EFU group control touch screen controller andFFU computer group control system。
How to check structure and installation parameters
The FFU in the SMT workshop may be installed on the ceiling, the top of the equipment or on a local support. Structural parameters include overall machine size, installation dimensions, maintenance methods and air inlet clearance. If installed on the top of the equipment, the load-bearing, cover opening trajectory and safety interlocking also need to be checked.
For specific structural conditions, please refer toWhat structural conditions need to be considered when installing FFU on the top of the placement equipment (Note: This link is an example of an FFU page dedicated to SMT placement machines. Please refer to the corresponding page on the site for specific content).
Issues that should be confirmed in advance during project communication
In the FFU selection stage of the SMT workshop, it is recommended to confirm the following with the FFU manufacturer and process party: regional cleanliness level and process requirements; equipment heating and dust generation; air volume and static pressure requirements; filtration level; noise requirements; air supply uniformity requirements; control methods; installation structure and maintenance conditions.
If you are choosing FFU for your SMT shop, you can visitAili Industrial FFU fan filter unit to learn about the complete machine configuration, you can also refer toSpecial FFU/EFU for SMT placement machines to learn about equipment matching solutions, or contact Aili Industrial for SMT industry selection support.
in conclusion
When using FFU in an SMT workshop, it is necessary to check the air volume, static pressure, filtration level, noise, air supply uniformity and control method based on process dust generation, equipment heating and operating actions. Parameters should be compared between the whole machine and the system, not just a single value. Structural and installation conditions also need to be confirmed simultaneously.
Aili Industrial has complete production capabilities in FFU matching in the electronics industry and can provide selection solutions based on SMT workshop conditions. If you need to know more about FFU configuration in SMT workshop, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.
