Defect parameter of the soldering process

The main influence factor of reflow soldering on SMC / SMD is the thermal shock during soldering. A reliable temperature rising process must be set during operation to reduce the thermal shock stress.

If the setting of the reflow soldering process and the control quality of each previous process fail to meet the specified requirements, it will lead to various undesirable phenomena such as SMC / SMD.

The defects in reflow welding can be roughly divided into two categories, please have a look:

①The defects are related to metallurgical phenomena, including cold welding, non-wetting, poor wetting, etc.;

②The defects are related to abnormal solder joint shape, including monument, bridge, core suction, solder ball, cavity, etc.

The main defects and the related reason & Elimination method are listed below:

Reflow oven soldering defects

Keywords：

Production Line LED Lamp Assembly, LED Bulb Production Line Assembly Machine, Screen Frame For Solder Paste Printer, Semi-Auto Solder Paste Printer, SMT Reflow Oven, 9 Zones Reflow Oven, Wave Soldering Machine Desktop, SMT Reel Scrap Cutting Machine, LED SMT Terminal Cutting Machine, SMT Ai Glue Dispensing Machine, SMT LED Lens Feeder Machine, PICk And Paste SMT Machine, Make Stancil Machine For SMT, PCB Board Shuttle Conveyor, PCB Handling Conveyors, PCB Belt Conveyors, SMT PCB Conveyor, PCB UV Conveyor, Assembly Heating PCB Separator For Mobile Ipad

I.C.T is a manufacturer of SMT machines. It mainly provides customers with SMT production lines including SMT Stencil Printers,  Pick and place machines, Reflow Oven, AOI Machine, Wave Soldering Machine and PCB Handling Machine etc. I.C.T has more than 25 researches on SMT and DIP technology,  for the world Customers provide SMT total solutions. There are successful cases of SMT technical team in Asia, Europe, America, Africa, and Australia.

I.C.T provide SMT solutions at various stages according to the different needs of customers. I.C.T is not only a provider of SMT equipment and technology, but also is the customer's escort in the field of SMT and DIP.

Welcome more people to discuss with us about SMT technologies and solutions, please contact us for more information:

Tel: +86 13670124230 (WhatsApp/Skype/WeChat)

Email: etasmt@foxmail.com