The difference between reflow soldering and wave soldering---From Shenzhen Vip Circuit Co.,Ltd

Welding technology occupy an extremely important position in the assembly of electronic products. General welding is divided into two categories: reflow soldering and wave soldering. Here Shenzhen Vip Circuit Co.,Ltd for everyone to talk about the main difference between reflow soldering and wave soldering.

Reflow soldering: The mechanical and electrical connection between the surface mount assembly terminals or pins and the PCB pads is achieved by re-melting the paste pre-assigned to the PCB pads. It is a step in SMT (Surface Mount Technology).

Wave soldering: wave soldering is a high-temperature heating to weld the plug-in components of the automatic solder equipment, from the function, the wave soldering is divided into lead wave soldering, lead-free wave soldering and nitrogen wave soldering, from the structure, a wave soldering is divided into spray, preheat, tin furnace, cooling four parts.

The difference between reflow soldering and wave soldering:

1, Wave soldering is the tin into a liquid, the use of motor agitation to form the peak, so that the PCB and the components welded together, generally used in the hand welding and SMT glue board. Reflow soldering is mainly used in the SMT industry, it is through the hot air or other heat radiation conduction, the Tin will be melted which on the PCB PADs and then welded together with the components.

2, The process is different: wave soldering should first spray soldering flux, and then passes through the preheat, welding and cooling zone. The reflow soldering process passes through the preheating zone, the recirculation zone and the cooling zone. In addition, wave soldering is suitable for hand welding and point rubber board, and requires all components to be heat-resistant,wave soldering can not have SMT solder paste components, SMT solder paste can only use reflow soldering, can not use wave soldering.