SEHO to Showcase Innovative Developments at SMT/Hybrid/Packaging 2013 in Nuremberg

The PowerSelective, designed for flexible miniwave processes and dip soldering processes, offers considerably greater flexibility and process reliability in selective soldering. This particularly applies to the batch model that is perfectly suited for lean production solutions and which may be easily adapted to any production environment. Ergonomically designed work places with individual height adjustment for loading and unloading, inspection places, or assembly areas for additional processing of assemblies flexibly enhance this soldering system.

The PowerSelective features many innovative functions such as fiducial recognition with automatic alignment of assemblies, real quantity control for drop jet fluxer which controls the actual applied quantity of flux at each solder joint, warpage compensation which measures distortions caused by bended PCBs and automatically corrects the z height, or the very comfortable offline teach program VIP (Visual Intelligent Programming).

Definitively unique, this is an automated optical inspection system (AOI) that can be embedded directly in the selective soldering process. The system is used for the detection of soldering defects such as non-wetting or insufficient wetting, missing pin or bridging. The inspection begins immediately after the soldering process when the printed circuit board is fixed in the gripper of the soldering machine. The AOI system can be easily integrated into a SEHO PowerSelective, offering remarkable cost savings in relation to floor space and board handling equipment.

In the field of wave soldering, SEHO will introduce two new and innovative modules. Special applications such as wave soldering with masks require selective flux application which ensures that only the points to be soldered will be wetted, not the entire mask. This avoids creepage of flux underneath the mask. Simultaneously, flux consumption will be reduced remarkably and the required cleaning cycles for the mask will be decreased. For these applications SEHO developed a coordinate fluxing unit that precisely applies the flux at the previously programmed points only. Other areas on the assembly will not be wetted.

Another module that will be installed behind the wave soldering machine accommodates an AOI system. This unit inspects the processed assemblies regarding typical THT soldering faults, missing or wrongly positioned components. This ensures early trend information about the production process quality under reproducible test conditions. The data gained by this automatic inspection contribute to process optimization and therefore increase the production quality.

In the field of reflow soldering, SEHO introduces the new PowerReflow II. Providing a heated length of 2700mm, this system is designed for medium-sized to large production volumes. Nine heating zones and an active cooling area of 900mm ensure flexible temperature profiling and perfect soldering results. For minimum maintenance requirements the system is equipped with a process gas cleaning unit. With a modern control unit and easy to program software, interfaces for integration into a fully automated production line and many other features, the PowerReflow II offers the finest soldering technology in its class and an ideal price-performance-ratio.