PCB Blogger-China PCB Factory,HOYOGO

     Reflow soldering and wave soldering are 2 common soldering methods in PCBA processing. What is their role in PCBA processing? What ’ s the differences?       What is Reflow Soldering? It is to heat and melt the solder paste pre-applied on the pad, and the electronic component pins or welding ends on the pad are electrically interconnected with the pad on the PCB, so as to achieve the purpose of soldering electronic components on the PCB board. Reflow soldering is generally divided into preheating zone, heating zone and cooling zone.     What is wave Soldering? It is to use a pump to spray the molten solder into a wave soldering, and then pass the pins of the electronic components to be soldered through the wave soldering to realize the electrical interconnection of the electronic components and the PCB board.  Wave soldering is divided into four parts: spraying, preheating, tin furnace and cooling.     The difference between wa...

Wave soldering is a soldering  technology   used for PCB mass manufacturing, mainly used for soldering through-hole components. The solder is usually a mixture of metals.   So what problems should be paid attention to in the  PCB wave soldering   technology?       1.  Before wave soldering, please check the operation of the equipment, the quality of the PCB to be soldered and the condition of the plug-in.     2. If there is green oil in t he component hole, it will lead poor tin plating in the hole. So, please note that the green oil in the hole does not exceed 10% of the hole wall.     3. If the thickness of the coating on the hole wall of the component is not enough, it will also cause poor tin plating in the hole, so the thickness of the hole wall should be greater than 18 μ m.       4. Please note that the hole wall not to be too rough, otherwise it may cause false welding or poor welding in the hole. ...