Performance Reflow Soldering Systems with best energy balance

Preheating

The preheating zone is used for thermal conditioning of the assembly to be soldered for the actual soldering process. In other words, the aim is to bring components of different sizes to a common temperature and to activate the flux in the solder paste. The preheating zone creates optimal conditions for the immediately following soldering process.

Process gas cleaning: The purity of the process zone is the primary objective in the reflow process, as it is a decisive factor in determining machine availability as well as the stability and reproducibility of the soldering processes. Impurities in the process gas atmosphere have various origins. The two most important sources are the solder pastes and the base materials of the printed circuit boards. The elementary task of the no-clean management system is to remove these residues from the process gas atmosphere so that neither assemblies nor the process chamber are contaminated by deposits.

Vacuum

If the components are exposed to a vacuum in the peak area, i.e. in the molten solder state, voids in the solder are removed from the solder joints by negative pressure. For certain SMT components such as power semiconductors or high-power LEDs, this improves thermal dissipation during operation.
More about the EXOS 10/26

Transport

The assemblies are transported through the process zone of the reflow soldering system by means of pin chains guided in profiles. Optionally, a second transport track is available, both to increase throughput and to use a different transport speed for another solder alloy, for example.