Nitrogen for optimising soldering processes
Using nitrogen to inert the atmosphere during soldering processes has become a generally accepted practice in the electronic assembly industry. Regardless of whether the soldering process is wave, selective or reflow, nitrogen improves the process by enhancing the joint quality and minimising defects.
In wave soldering, the required purity is more important than in re works. In the wave soldering process, the mounted components are led through a series of zones adding flux, heat and wave of melted solder. Nitrogen is added in a closed, gas-tight tunnel system in the machine throughout the entire process.
Some soldering processes take place in a reflow-oven and nitrogen is added through the entire process. The process starts with pre-heating of the mounted circuit boards allowing water, flux activating additives etc. to be dried off the board. Next, a soldering paste, consisting of flux and corns of solder will melt and be applied to islands during the reflow phase. Finally, the soldering joints and parts cool. Nitrogen purity is less important compared to that of wave soldering.
Oxywise Nitrogen Generating Unit has been installed into 40ft. shipping container; many special features has been utilised.Read More
Small nitrogen generator creates inert atmosphere for Ersa Ecoselect soldering machine.Read More
Oxywise has finalized installation of nitrogen generator in Nizhny Novgorod, Russia. The unit is producing nitrogen with purity 99,999% for local manufacturer of microelectronics.Read More
A company active in auto-mobile industry has decided to move from liquid nitrogen supply to an on-site production using Oxywise generator.Read More
Nitrogen generating unit has been put into operation at the East Czech manufacturer of white and printed ceramic substrates.Read More
Now when the use of lead in soldering is forbidden due to environmental reasons, nitrogen gas is inevitable in lead free soldering.Read More