March, 2021
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Improving the Energy Efficiency of Soldering Systems Continued from page 59
tage to automatically monitor and regulate solder height in selective soldering. Until recently, there has not
been a way to measure the wave height in conventional wave sol- dering systems, without inter- rupting production and using external measuring instruments. Even then, the measurement is only a snapshot of the state of the machine and does not offer any information about necessary parameter modification or sup- port automated feedback control.
Automatic Wave Height Measurement
SEHO has developed an
automatic wave height measure- ment system, which is built into the soldering section of its MWS 2300. It is based on contact meas- urement, and designed to produce reliable results for both laminar and turbulent solder flow. A reference measurement is
performed to determine the ideal state of the solder wave height. The measure value, as well as the configured machine parame- ters are stored in the system. According to a customizable timetable, the system performs automatic measurements of wave height during production by lowering a bar with sensors to the surface of the wave. Then, based on the measurements and a mathematical model, the wave height is adjusted as needed to within configurable tolerances. If the necessary change is
outside the defined tolerances, the system calculates and pro- vides a recommendation. Then, the operator may decide whether or not the change should be made, or if the problem originates some- where else. All measurements are logged and all process changes are logged for complete traceabil- ity, providing proof of the quality of the finished product. The benefits of traceability
are clear. Deviations from the ideal process are spotted quickly and potential causes identified immediately.
Future-Proof Selective Soldering
Selective soldering is one of
the most forward-looking tech- nologies in electronics manufac- turing today. It is efficient with both energy and materials, deliv- ers reliable results, and depend- ing on the type of machine, can be used for many different applica- tions.
wave soldering system, selective
Compared with a typical soldering
requires more maintenance, especially in the soldering area and nozzles experience more wear and tear. SEHO took on this specific challenge as well. SEHO’s LongLife mini-wave
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Appointments can be made by reaching out to a TRI’s representative
triusa@tri.com.tw +1-408-567-9898 See at IPC APEX (virtual)
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TR7600F3D SII 3D AXI
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M2M COMMUNICATION
solder nozzle significantly im - proves the selective soldering process. The nozzle is manufac- tured in a special process that
does not damage the surface of the nozzle. Unlike cutting, SEHO’s process does not change the sur- face of the nozzle at the atomic
Page 61
level. The mini-wave nozzle is then coated with a special gold alloy.
These unique features
lengthen the lifetime of the noz- zle over that of conventional technology by more than three times. This results in remark- able cost savings over time. Also, maintenance requirements are reduced considerably. The LongLife solder nozzle
does not need to be cleaned or reactivated at any time during an entire work shift. It also elim- inates the need for activation
MWS 2340 automated wave soldering system.
2021 March 8-12, 2021 Visit us at IPC APEX Expo 2021
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The online live demonstrations can be arranged individually on request and presented in high-quality video.
The Live Demo will include: • Product ntroduction • Product Live Demo
Demo will include: uct introduction oduct Live Demo
• Tailored technical sessions • Real-time Q&AReal-time Q&A
ed technical sessions Continued on page 63
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