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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.
Selective wave soldering bar selection must balance melting point stability, surface tension, and oxide film formation rate; solder dross control is directly affected by solder bar purity, copper and iron impurity content, and flux compatibility. The Jiajinyuan SN99.3CU0.7 series has a measured dross rate below 1.2% in small and medium batch high-density board soldering, significantly outperforming conventional solder bars.
Published: 2020-11-14Selective wave soldering performs dip soldering on local pins of the PCB through precise positioning, avoiding the thermal shock and bridging risks caused by passing the entire board through the wave. It is suitable for complex single boards with mixed high-density mounting, sensitive components, or bottom shielding covers. In actual tests with Jiajinyuan equipment, the defect rate can be reduced from 1.2% to 0.35%, greatly reducing rework labor and solder dross loss.
Published: 2019-06-28Due to the large heat capacity and slow heating rate of thick copper plate welding, wave soldering is prone to missing solder. Selecting high-wettability solder bars can significantly improve the spreading ability of molten solder on thick copper substrates. Combined with the collaborative optimization of process parameters such as increasing the preheating temperature to 130℃～140℃ and reducing the chain speed to 1.0m/min～1.2m/min, it effectively solves problems such as insufficient solder joints, bridging defects, and cold solder on the back of the PCB.
Published: 2018-08-29During the pin dip soldering process, oxidation of the solder bath surface is the main cause of continuous dross generation. Jiajinyuan anti-oxidation flux, through the synergistic effect of dynamic coverage and active ingredients, forms a dense inert film on the solder bath surface, reducing the oxidation rate by more than 70% during pin dip soldering, cutting daily dross production by 1.2kg, significantly extending the cleaning cycle of the solder pot, and stabilizing solder joint wettability.
Published: 2018-03-24Selective wave soldering significantly reduces changeover time and fixture debugging frequency by precisely positioning soldering areas and skipping already surface-mounted components. In multi-variety, small-batch PCBA production, it compresses the preparation cycle per batch to within 15 minutes, greatly improving overall equipment effectiveness, and serves as the core process support for Jiajinyuan models to achieve high output in small and medium batch order scenarios.
Published: 2017-12-09Solder dross is continuously generated during wave soldering machine operation and floats on the surface of the molten solder bath. If not removed in time, it will cause intensified liquid level fluctuations, increased risk of nozzle clogging, and frequent solder spikes and bridging on solder joints. Regular dross removal is a key action to ensure consistent wave height and soldering yield. Production line verification by Jiajinyuan shows that manual dross removal every 4 hours can stably control the thickness of solder dross within 3mm.
Published: 2017-06-15
Wave soldering bar selection must closely align with actual production line performance. Sn99.3Cu0.7 solder bars are low-cost with acceptable oxidation resistance, but have weak wetting force. Silver-containing alloys improve fluidity and solder joint strength, but significantly increase costs. The differences between the two are particularly prominent in high-temperature continuous operation, fine-pitch through-hole soldering, and lead-free compatibility. Engineers must comprehensively determine the applicable boundaries of SnCu solders based on board thickness, component density, and rework rate.
Published: 2016-10-30Continuous oxidation on the surface of molten solder during wave soldering is the main cause of solder dross formation. High temperatures, air exposure, flux residues, and agitation of the solder bath collectively accelerate the rupture and agglomeration of the oxide film, leading to increased solder dross volume, higher solder consumption, and more frequent equipment maintenance. Field measurements on Jia Jinyuan production lines show that when the increase in solder dross per shift exceeds 1.2kg, solder costs rise by 8.6% year-on-year. Timely oxygen control and solder surface cleaning can reduce solder dross generation by more than 35%.
Published: 2016-09-07
Prolonged high-temperature operation of solder bars in a wave soldering furnace can indeed cause micro-segregation of alloy components. Particularly when tin-lead or lead-free solder bars are continuously exposed to temperatures above 260°C with insufficient bath surface agitation, elements such as lead, silver, and copper may locally enrich due to differences in density and oxidation rate. However, within the standard 8-hour solder replacement cycle, compositional variations remain well below the tolerances permitted by IPC-J-STD-006. What truly affects soldering stability is often the accumulation of dross and carbonized flux residues.
Published: 2015-10-14To meet the actual production line requirements for solder materials used in industrial control motherboards, this summary focuses on the compatibility issues of solder paste in SMT printing, reflow soldering and wave soldering processes, and elaborates on the synergistic performance of Jiajinyuan solder paste and matching solder bars in high-reliability soldering, covering key process parameters such as viscosity adaptation, metal content control, and residue corrosion inhibition.
Published: 2013-06-25Our technical team is always ready to provide professional solder material selection advice and SMT process solutions.