If you’re working in electronics manufacturing, especially with through-hole components, you’ll find that wave soldering is an essential process for your production line. Compared to the PCB reflow process, which is mainly used for SMT components, wave soldering is designed to provide stronger, more reliable solder joints for traditional components.
At Chuxin Electric, we provide industry-leading wave soldering equipment like the SA-350—a fully automatic, inline wave soldering machine tailored to meet your high-volume soldering needs with precision and efficiency.
Understanding the Wave Soldering Process
As you prepare your PCB boards for assembly, your workflow typically involves:
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Component Insertion – Manually or automatically inserting through-hole components into the PCB.
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Flux Application – The solder machine sprays a controlled layer of flux to clean the pads and leads.
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Preheating – To avoid thermal shock, the PCB board soldering machine preheats the board using slightly hot air across multiple zones. This stabilizes temperatures before the soldering stage.
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Solder Wave Contact – The board passes over a flowing wave of molten solder, forming secure connections between component leads and PCB pads.
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Cooling – Finally, a fan-assisted cooling system solidifies the joints and ensures structural integrity.
Unlike the PCB reflow process, which requires precise reflow temperature profiling for each zone, wave soldering delivers bulk soldering in one go—making it ideal for high-throughput environments.
Why Choose the SA-350 Wave Soldering Machine?
You need more than just basic wave solder equipment—you need control, speed, and reliability. That’s where the SA-350 from Chuxin Electric sets itself apart.
Here’s what you can expect when using this advanced circuit board soldering machine:
| Key Feature | SA-350 Specification |
|---|---|
| Machine Dimensions | L4250 × W1580 × H1750 mm |
| Weight | Approx. 1650 KG |
| Power Supply | 3PH 380V 50Hz |
| Preheating Zones | 3 zones (upper), PID-controlled |
| Heating Method | Slightly hot air with tempered glass insulation |
| Tin Pot Material | Cast iron + porcelain |
| Wave Adjustment | Frequency conversion + computer control |
| Max Temperature | 300°C |
| Spray System | Stepper motor, air pressure 0.2–0.4Mpa |
| Flux Addition | Automatic |
| Transmission Speed | 400–1800mm/min (inverter closed-loop control) |
| Control System | PC + PLC |
| Cooling Method | Mold flow fan |
| PCB Width Capacity | 50–350mm |
Whether you’re soldering large power boards or industrial control units, the SA-350 delivers a balanced combination of flexibility and performance.
What Makes Wave Soldering Effective?
Compared to reflow soldering, wave soldering offers you:
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✅ One-pass soldering of many joints at once
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✅ Ideal for double-sided or mixed-technology boards
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✅ Strong mechanical strength for large components
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✅ Lower complexity for through-hole-only designs
The SA-350’s smart features—like PID preheating, automatic flux addition, and stainless steel runners—help you minimize defects such as bridging or cold solder joints.
Is Wave Soldering Still Relevant in 2025?
Absolutely. While the PCB reflow process is ideal for SMT, your projects involving connectors, transformers, and high-current terminals still require wave soldering machines. With lead-free compliance and scalable configurations, solutions like the SA-350 are here to stay.
Final Thoughts
If you’re aiming to improve the quality and efficiency of your PCB assembly, investing in high-performance wave soldering equipment is a smart move. And with Chuxin Electric’s SA-350, you’re not only getting a robust PCB soldering machine—you’re investing in consistency, reliability, and long-term value.
Contact us today to learn how the SA-350 can be integrated into your production line and enhance your circuit board soldering machine operations from day one.