Thermal processing of solder for electronics manufacturing takes place in a reflow oven. Thus nitrogen ovens typically have nitrogen injection in at all times which decreases defect rates. The nitrogen reflow oven takes a few minutes to reduce Oxygen concentration to acceptable levels within the chamber. This minimizes oxidation of the surfaces to be soldered. Nitrogen (N 2 ) is a common gas used for this purpose. Some ovens are designed to reflow PCBs in an oxygen-free atmosphere. Ovens which also use fans to force heated air towards the assemblies (which are usually used in combination with ceramic infrared heaters) are called infrared convection ovens. The heat source is normally from ceramic infrared heaters, which transfers the heat to the assemblies by means of radiation. The PCB moves through the oven on a conveyor belt, and is therefore subjected to a controlled time-temperature profile. Generally there are several heating zones followed by one or more cooling zones. The SMT Reflow oven contains multiple zones, which can be individually controlled for temperature. Some Reflow Oven for LED industry, 6 heating zones Reflow Oven can be enough for soldering requirement. Some Print Circuit board components is very small, easy to be oxidated in the high temperature environment, so need the nitrogen process to avoid oxidation on the solder surface. Like the Pick and place machine is Dual lane, then Reflow oven and conveyor also should be Dual lane model. By heating method different, SMT Reflow oven called hot air convection reflow oven or infrared Reflow oven, Some reflow oven is Dual lane(2 conveyor in 1 reflow oven), so called Dual lane Reflow Oven, some reflow oven is nitrogen process, so called Nitrogen Reflow oven, Some reflow oven has a Vacuum part in soldering area to reduce the void in solder, this kind reflow oven called Vacuum Reflow oven.ĭifferent Reflow oven used for different soldering process. A reflow oven is a machine used primarily for reflow soldering of surface mount electronic components to printed circuit boards (PCB).Īs heating zones is different, SMT reflow oven called 8 heating zones reflow oven, 10 heating zones reflow oven, 12 heating zones reflow oven.

Smt reflow