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Here you can find knowledge about Wave Soldering Solder Bar, including but not limited to usage methods, installation techniques, troubleshooting and more. Focused on SMT soldering processes. If you can't find what you need, please contact us anytime.
The formation causes of wave soldering dross involve the purity of solder bars, oxide film control, and the synergistic imbalance of process parameters. By comparing the dross generation amount of high-purity solder bars and conventional solder bars under different chain speeds, wave heights, and nitrogen protection, combined with the actual line changeover cost and maintenance frequency of the production line, the two-way optimization path of the solder bar process is clarified, providing a feasible selection basis for the mass production of high-reliability PCBs.
Published: 2026-08-27
Antioxidation of solder bars is the core guarantee for the stable operation of wave soldering. Thickening of the oxide film will accelerate the imbalance of the surface tension of the molten solder, directly leading to an abnormal increase in wave soldering dross. By controlling the molten solder temperature, adding antioxidants, optimizing the nitrogen coverage of the solder pot, and adjusting the frequency of regular dross removal, wave soldering dross can be reduced by more than 40%.
Published: 2026-08-27
Wave soldering solder bar alloy selection must focus on two core hard indicators: purity and oxidation resistance of the solder bar. High purity (≥99.95%) can reduce the generation of dross by more than 40%, while the oxidation-resistant formulation with trace rare earth elements can reduce the thickness of the oxide film on the surface of the liquid solder bath by 60%, significantly extending the service life of the solder bar and improving the wettability of through-hole solder joints.
Published: 2026-08-27
Improper temperature setting of the wave soldering pot is one of the main causes of cold solder joints, bridging, and poor wetting. There are significant differences in melting point and activity among different solder bar alloys. The wave soldering pot temperature must be accurately set according to the actual type of solder bar alloy used; otherwise, it can easily cause batch soldering defects.
Published: 2026-08-27
The compatibility between wave soldering flux and solder bars directly affects solder joint gloss, wetting uniformity, and residue morphology. Based on production line measured data, this paper horizontally compares the combined performance of three types of fluxes—rosin-based, no-clean, and water-soluble—paired with 63/37, 60/40, and SAC305 solder bars respectively. The analysis is conducted from four dimensions: wetting angle variation, solder joint reflectivity, bridging occurrence rate, and cleaning difficulty. It is clarified that for scenarios requiring high gloss, rosin-based flux paired with 63/37 solder bars is preferred, while for high reliability requirements, water-soluble flux paired with SAC305 is favored.
Published: 2026-08-27
The sharp surge in dross generation during wave soldering solder bar replacement has become a high-frequency pain point on production lines. The industry is shifting from experience-based judgment to data-driven solder pot management, systematically reducing dross by optimizing the solder bar addition rhythm, controlling molten oxygen content, and upgrading the dross scraping frequency logic. This not only reduces material loss rates and downtime frequency, but also forces enterprises to restructure the daily maintenance SOP for soldering pots, with frontline process engineers required to master the synergistic relationship between the trend of solder viscosity changes and the critical point of flux carbonization.
Published: 2026-08-27
The selection of wave soldering bars requires comprehensive consideration of core parameters such as melting point, oxidation resistance, and copper corrosion rate. The typical Sn63/Pb37 solder bar has a melting point of 183°C, while that of Sn99.3/Cu0.7 is 227°C. The key to solder dross treatment lies in controlling the thickness of the liquid surface oxide film and the angle of the scraper. It is recommended to set the inclination angle of the scraper between 5° and 8°, and cooperate with mechanical scraping every 4 hours and nitrogen protection.
Published: 2026-08-27
Excessive floating dross in the solder bar melting pool directly affects wave soldering yield and equipment service life. This paper conducts a horizontal comparison of the dross performance of three mainstream solder bar types—high-activity solder bars, low-dross solder bars, and phosphorus-containing solder bars—across five dimensions: real production line failure frequency, solder dross generation rate, flux compatibility, maintenance man-hours, and long-term costs. It explicitly states that low-dross solder bars should be prioritized for small and medium-volume mixed-assembly PCB scenarios, while phosphorus-containing solder bars must be paired with an upgraded wave soldering oxidation suppression system for continuous production of high-copper-content PCBs.
Published: 2026-08-27
The whitening of wave soldering joints is mostly caused by insufficient purity of solder bars. GB/T 8012—2013 stipulates that the Sn content in tin-based solder shall not be less than 99.3%, the upper limit of Pb impurity is 0.005%, and the total content of harmful elements such as As, Sb, and Bi shall not exceed 0.01%. In actual production lines, every 0.1% decrease in solder bar purity may increase the thickness of the solder joint oxide film by 12%, leading to an abnormal increase in reflectivity and a grayish-white appearance.
Published: 2026-08-27
Rapid oxidation of wave soldering bars will significantly shorten the service life of solder pots and increase solder joint defect rates. Controlling the molten solder temperature is the core means of suppressing solder bar oxidation. In actual production, the wave soldering machine temperature should be stably maintained within the range of 250℃±2℃. Combined with nitrogen protection, regular dross removal, and monitoring of solder bath level, the oxidation rate of wave soldering bars can be effectively delayed.
Published: 2026-08-27Our technical team is always ready to provide professional solder material selection advice and SMT process solutions.