A dust-free, nitrogen-flushed oven with a sealed chamber enhances the conductivity of circuit boards

The nitrogen-flushed clean oven eliminates residual oxygen through a sealed chamber and nitrogen purging technology, effectively suppressing oxidation reactions during the PCB soldering process and ensuring the metallic luster and electrical conductivity of the solder joints.

Its precision temperature control system enables a step-wise heating curve with a deviation of ±1°C, accommodating the melting characteristics of different solder pastes and preventing PCB substrate deformation caused by thermal shock.

The internal recirculating airflow is filtered through HEPA filters to meet Class 100 cleanliness standards, eliminating the impact of particulate contamination on precision pads. The inert nitrogen environment reduces the peak temperature of the reflow process by 10–15°C, significantly reducing the risk of delamination in the inner layers of multilayer boards. The equipment integrates an oxygen sensor and an automatic nitrogen replenishment module to maintain oxygen concentrations below 50 ppm in real time, making it particularly suitable for the production of buried and blind via boards with high reliability requirements, such as those used in automotive electronics.

The modular design of the clean nitrogen-filled oven supports dual-track parallel processing. Combined with an MES system to enable traceability of process parameters, it boosts the first-pass yield of military-grade HDI boards to over 99.2%.